A strong Group 31 choice for a buyer targeting 1000 CCA is the VEVOR 12V 140Ah LiFePO4 Dual Purpose Battery, which lists exactly 1000 CCA and pairs engine starting with deep-cycle capacity. It suits buyers who need one battery for starting and accessories, but lithium compatibility and charging requirements should be checked before purchase. This selection also includes lead-acid AGM options, including models rated from 825 to 950 CCA and two Odyssey products listed at 1150 CCA.
Those ratings do not make every battery interchangeable: intended vehicle use, terminal layout, dimensions, and charging system matter. Compare the listed specifications with your current battery and equipment requirements, especially if your application calls for marine deep cycling, commercial truck starting, or a passenger-car fit.
The VEVOR 12V LiFePO4 Dual Purpose Battery leads because it is the only listed product with exactly 1000 CCA, and it also offers 140Ah capacity for deep-cycle use. Its built-in BMS includes overcharge, over-discharge, overcurrent, short-circuit, and temperature protections. At 30.9 pounds, it is substantially lighter than the listed AGM models, but confirm that your vehicle or marine charging system supports this 12.8-volt lithium battery before choosing it.
Our Top Picks
Best OverallVEVOR LiFePO4 Dual Purpose Battery
It is rated at exactly 1000 CCA and 140Ah, with a built-in BMS and dual-purpose starting and deep-cycle use.
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Highest CCAIts listed 1150 CCA exceeds the 1000-CCA target, and the description identifies it as a marine dual-purpose battery.
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Truck StartingThis commercial Group 31 AGM is rated at 950 CCA and 100Ah, with stated truck and heavy-equipment compatibility.
View on Amazon- Marine Deep-Cycle Interstate 31-AGM5
Compare the Group 31 battery options
| # | Product | Voltage | Weight | Compatible with Vehicle Type | Buy |
|---|---|---|---|---|---|
| 1 | 1. VEVOR LiFePO4 Dual Purpose BatteryBest Overall | 12.8 V DC | 30.9 lb | Automotive | View on Amazon |
| 2 | 2. Odyssey ODX-AGM31MHighest CCA | 12 V | 77.8 lb | Passenger Car | View on Amazon |
| 3 | 3. Crown CRV31S AGM BatteryTruck Starting | 12 V | 76 lb | Commercial Truck, Heavy-duty equipment… | View on Amazon |
| 4 | 4. Odyssey ODX-AGM31Longer-cycle AGM operation | 12 V | 16 oz | Passenger Car | View on Amazon |
| 5 | 5. Interstate 31-AGM5Marine Deep-Cycle | 12 V | 60 lb | Boat | View on Amazon |
| 6 | 6. Mighty Max MM-G31Passenger-car starting power | 12 V | 57.6 lb | Passenger Car | View on Amazon |
| 7 | 7. MARXON Group 31MMarine RV dual-purpose choice | — | — | marine rv | View on Amazon |
| 8 | 8. Interstate 8-31MAGMDCTrolling motor and engine use | 12 V | 64.5 lb | Trailer | View on Amazon |
| 9 | 9. Mighty Max MM-G31MDual-purpose marine power | 12 V | 72.5 lb | Boat | View on Amazon |
| 10 | 10. Mighty Max MM-G31M-131Johnson Marine replacement | 12 V | 72.5 lb | Boat | View on Amazon |
Detailed Reviews: Best Group 31 Battery 1000 Cca

#1 · Best Overall
1. VEVOR LiFePO4 Dual Purpose Battery
- Voltage: 12.8 V DC
- Weight: 30.9 lb
- Compatible with Vehicle Type: Automotive
Best for: Lightweight lithium dual purpose.
Why it ranks #1: It is rated at exactly 1000 CCA and 140Ah, with a built-in BMS and dual-purpose starting and deep-cycle use.
VEVOR combines 1000 CCA with a 140Ah LiFePO4 capacity in a 30.9-pound Group 31 battery, enabling engine starting and extended power for accessories such as trolling motors and fish finders. Its built-in smart BMS adds stated protection against electrical and temperature conditions during operation.
The 1000 CCA rating addresses starting, while 140Ah supports listed loads including car refrigerators, air conditioners, trolling motors, fish finders, and solar panels. Because the battery uses LiFePO4 chemistry, its 12.8V rating differs from the 12V ratings of the listed AGM products, so check system requirements before installation. The smart BMS lists overcharge, over-discharge, overcurrent, short-circuit, and low/high-temperature protection. Its 30.9-pound weight can ease handling compared with heavier listed options.
- 1000 CCA starting rating
- 140Ah capacity
- 30.9-pound listed weight
- BMS protection for multiple electrical and temperature conditions
- Its 12.8V rating differs from the 12V ratings listed for the AGM alternatives.
Skip it if you require a battery specified at 12 volts rather than 12.8 volts; check your system’s voltage requirements first.
This suits buyers seeking a lighter lithium battery for starting and high-capacity accessory use across listed automotive, RV, and marine applications. Its 12.8V rating and BMS features are important fit considerations for the electrical system.
Full product details
| Brand | VEVOR |
|---|---|
| Compatible with Vehicle Type | Automotive |
| Included Components | 1 x Dual Purpose LiFePO4 Lithium Battery, 1 x Screw Set, 1 x User Manual, 1 x Washer Set |
| Dimensions | 6.69"D x 12.99"W x 9.45"H |
| Item Weight | 30.9 pounds |
| Manufacturer | VEVOR |
| Part Number | LiFePO4 Lithium Battery, 12V, 140Ah |
| Model Number | EV12-140 |
| Size | 12.99 x 6.69 x 9.45 in |
| Voltage | 12.8 volts_of_direct_current |

#2 · Highest CCA
2. Odyssey ODX-AGM31M
- Voltage: 12 V
- Weight: 77.8 lb
- Compatible with Vehicle Type: Passenger Car
Best for: High-output marine cycling.
Why it ranks #2: Its listed 1150 CCA exceeds the 1000-CCA target, and the description identifies it as a marine dual-purpose battery.
Odyssey lists 1150 CCA and up to 400 cycles at 80% depth of discharge for its ODX-AGM31M, pairing strong starting output with a quantified deep-cycle claim. Its marine dual-purpose description supports use for starting, trolling, and powering onboard electronics, rather than limiting it to cranking alone.
The 1150 CCA rating addresses engine starts, while the stated 400 cycles at 80% depth of discharge gives buyers a specific reference for repeated deep cycling. Odyssey also describes high recharge efficiency and stable voltage for longer periods, supporting repeated use and sustained loads. Top-post and threaded terminals are listed, which can help match existing cable connections. The 11.1-by-16.8-by-11.9-inch product dimensions warrant careful compartment checks before installation.
- 1150 CCA starting rating
- Up to 400 cycles at 80% depth of discharge
- Marine dual-purpose use for starting and trolling
- Top-post and threaded terminals
- Its listed 16.8-inch width and 11.9-inch height require substantial installation clearance.
Skip it if you need a compact battery compartment; the listed dimensions are 16.8 inches wide and 11.9 inches high.
Choose this for marine owners seeking high cranking output alongside repeated deep-cycle use for trolling and onboard electronics. The cycle and terminal details are useful, but its substantial listed dimensions are a significant fit boundary.
Full product details
| Brand | Odyssey |
|---|---|
| Compatible with Vehicle Type | Passenger Car |
| Included Components | Battery |
| Dimensions | 11.1"D x 16.8"W x 11.9"H |
| Item Weight | 77.8 pounds |
| Manufacturer | Odyssey |
| Part Number | ODYODX-AGM31M |
| Manufacturer Warranty Description | 1 year limited |
| Model Number | ODYODX-AGM31M |
| Size | Group 31 |
| Voltage | 12 volts |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: This product can expose you to chemicals including styrene which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov |
Listed on Amazon as: ODYSSEYBattery ODYODX-AGM31M
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#3 · Truck Starting
3. Crown CRV31S AGM Battery
- Voltage: 12 V
- Weight: 76 lb
- Compatible with Vehicle Type: Commercial Truck, Heavy-duty equipment…
Best for: Commercial truck starting.
Why it ranks #3: This commercial Group 31 AGM is rated at 950 CCA and 100Ah, with stated truck and heavy-equipment compatibility.
A 950 CCA rating makes the Crown CRV31S the highest-CCA lead AGM option among the listed Crown details, aimed at commercial trucks and heavy-duty equipment. Its 100Ah capacity adds reserve power, while sealed, spill-proof construction removes routine maintenance associated with checking battery fluid.
The combination of 950 CCA and 100Ah is relevant to commercial users balancing engine starts with reserve needs. Crown specifies a sealed AGM format that is maintenance-free and spill-proof, reducing routine servicing and helping limit liquid-spill concerns in equipment applications. The listed 13-by-6.77-by-8.44-inch dimensions provide a concrete installation check, and vibration resistance is identified for heavy-duty use. At 76 pounds, handling and mounting support are important considerations during replacement.
- 950 CCA starting rating
- 100Ah capacity
- Sealed, spill-proof, maintenance-free AGM design
- Vibration resistance for heavy-duty applications
- At 76 pounds, it is a heavy battery to lift and position.
Skip it if you need a battery weighing under 31 pounds; VEVOR EV12-140 is listed at 30.9 pounds.
The CRV31S suits commercial truck, heavy-equipment, and industrial buyers seeking 950 CCA, 100Ah, and sealed AGM operation. Account for its 76-pound weight and listed dimensions when planning handling and the battery mounting space.
Full product details
| Brand | CROWN BATTERY |
|---|---|
| Battery Capacity | 100 amp_hours |
| Compatible with Vehicle Type | Commercial Truck, Heavy-duty equipment, Industrial |
| Included Components | 1 × Crown CRV31S Battery |
| Dimensions | 6.77"D x 13"W x 8.44"H |
| Item Weight | 76 pounds |
| Manufacturer | Crown Battery Manufacturing Company |
| Part Number | CRV31S (Pack of 1) |
| Manufacturer Warranty Description | 12 Month Manufacturer |
| Model Number | CRV31S |
| Size | 13.00 x 6.77 x 8.44 inches |
| Voltage | 12 volts |
Listed on Amazon as: Crown Group 31 AGM Battery 12 Volt 100Ah 950 CCA Commercial Truck Battery – Sealed Maintenance Free | CRV31S (Pack of 1)
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#4
4. Odyssey ODX-AGM31
- Voltage: 12 V
- Weight: 16 oz
- Compatible with Vehicle Type: Passenger Car
Best for: Longer-cycle AGM operation.
Why it ranks #4: The description lists 1150 CCA and a 4-year manufacturer warranty, though the supplied compatibility information names passenger cars.
Odyssey specifies 1150 CCA for this Extreme Series AGM battery, giving it a higher starting rating than the 1000 CCA target while its stated 70% longer cycle life than conventional deep-cycle batteries supports repeated use. That combination is relevant to buyers balancing engine starts with ongoing power demands.
The 1150 CCA figure is the clearest starting specification, while the stated 70% longer cycle life speaks to repeated cycling compared with conventional deep-cycle batteries. The listing also describes high, stable voltage for longer periods, a useful quality for equipment that benefits from steadier output. Its dimensions are listed as 9.25 by 15.25 by 12.5 inches, so check available space carefully; those measurements are notably broad and tall relative to many Group 31 listings.
- 1150 CCA rating
- Stated 70% longer cycle life than conventional deep-cycle batteries
- High, stable voltage for longer periods
- Dimensions are provided
- The listed 15.25-inch width and 12.5-inch height may be difficult to accommodate in compact spaces.
Skip it if you have a battery compartment limited to typical Group 31 dimensions; the listed 15.25-inch width and 12.5-inch height need space.
This fits buyers prioritizing high cranking output and repeated cycling in an AGM battery. Its stated cycle-life advantage is relevant, but the listed dimensions are unusually large enough to make compartment measurements a key boundary.
Full product details
| Brand | Odyssey |
|---|---|
| Compatible with Vehicle Type | Passenger Car |
| Included Components | Battery |
| Dimensions | 9.25"D x 15.25"W x 12.5"H |
| Item Weight | 16 ounces |
| Manufacturer | ODYSSEY BATTERY |
| Part Number | ODYODX-AGM31 |
| Manufacturer Warranty Description | 4 Year Manufacturer |
| Model Number | ODYODX-AGM31 |
| Voltage | 12 volts |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov Proposition 65 Warning for California Consumers WARNING: This product can expose you to chemicals including styrene which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov |
Listed on Amazon as: Odyssey Battery ODX-AGM31 Extreme Series AGM Battery
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#5 · Marine Deep-Cycle
5. Interstate 31-AGM5
- Voltage: 12 V
- Weight: 60 lb
- Compatible with Vehicle Type: Boat
Best for: High-crank marine deep cycle.
Why it ranks #5: This marine/RV AGM is rated at 925 CCA and 100Ah, with features describing high-cranking and extended deep-cycle use.
Interstate’s listed 925 CCA and 1110 CA ratings give this Group 31 AGM marine/RV battery substantial starting figures alongside its 100Ah capacity. The pure-lead AGM design and thick plates are described for high-cranking, extended deep-cycle output, helping boaters power a motor and accessories over longer operating periods.
The 100Ah capacity and extreme deep-cycle positioning make this a candidate for boat setups that draw power from appliances, trolling motors, audio systems, fish finders, or a windlass. Its 925 CCA and 1110 CA ratings also address engine starting, so the battery can cover both starting and accessory demands. At 60 pounds, it is lighter than several listed Group 31 options, though the supplied information does not give its dimensions for compartment checks.
- 100Ah capacity for extended accessory use
- 925 CCA and 1110 CA ratings
- Pure-lead AGM construction
- Thick plates support continuous discharge
- The supplied specifications do not list battery dimensions for checking compartment clearance.
Skip it if you need a stated battery length, width, and height before planning installation; the supplied listing omits them.
Choose this for a boat owner prioritizing strong starting ratings and deep-cycle power for several onboard loads. Its listing identifies boat use and a 60-pound weight, but provides no dimensions, so installation planning has less fit information.
Full product details
| Brand | Interstate Batteries |
|---|---|
| Compatible with Vehicle Type | Boat |
| Item Weight | 60 pounds |
| Manufacturer | Interstate Batteries |
| Part Number | 31-AGM5 |
| Voltage | 12 volts |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov Small parts. Not for children under 3 yrs. |
Listed on Amazon as: Interstate Batteries Marine/RV Battery 12V 100Ah 925CCA 1110CA Group 31 AGM (31-AGM5)
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#6
6. Mighty Max MM-G31
- Voltage: 12 V
- Weight: 57.6 lb
- Compatible with Vehicle Type: Passenger Car
Best for: Passenger-car starting power.
Why it ranks #6: Its 900 CCA and 100Ah suit passenger-car starting, but it falls below the 1000-CCA target and is not listed as marine-compatible.
With 900 CCA and a 140-minute reserve rating, the Mighty Max MM-G31 targets passenger-car starting while retaining reserve power for continued operation. Its 100Ah capacity and sealed, spill-proof AGM construction pair high-discharge output with deep-discharge recovery, making it a practical option for buyers seeking a rechargeable Group 31 car battery.
The 900 CCA rating is the key figure for buyers focused on starting, while the 100Ah capacity and 140 RC provide additional power reserve. Mighty Max also specifies deep-discharge recovery, which supports returning to use after substantial discharge, and a sealed, spill-proof AGM design that avoids liquid handling. At 12.88 by 6.75 by 9.5 inches, it has slightly different dimensions from other Group 31 listings, so measure the battery tray before installation.
- 900 CCA starting rating
- 100Ah capacity
- 140-minute reserve capacity
- Sealed, spill-proof AGM with deep-discharge recovery
- Its 140-minute reserve capacity is shorter than the 200- and 240-minute ratings listed on some marine options.
Skip it if you need more than 140 minutes of stated reserve; MARXON Group 31M lists 200 minutes.
Consider this for a passenger-car application needing a 900 CCA AGM battery with reserve capacity and spill-proof construction. Its 140-minute RC and listed dimensions are relevant boundaries; verify that both meet the vehicle’s requirements.
Full product details
| Brand | Mighty Max Battery |
|---|---|
| Battery Capacity | 100 amp_hours |
| Compatible with Vehicle Type | Passenger Car |
| Included Components | Battery |
| Dimensions | 12.88"D x 6.75"W x 9.5"H |
| Item Weight | 57.6 pounds |
| Manufacturer | Mighty Max Battery |
| Part Number | MM-G31 |
| Manufacturer Warranty Description | 1 Year Manufacturers Warranty |
| Model Number | MM-G31 |
| Size | Group 31 |
| Voltage | 12 volts |
Listed on Amazon as: Mighty Max Battery MM-G31 Start and Stop Car BCI Group 31 12V 100AH, 140RC, 900 CCA, Rechargeable AGM Car battery
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#7
7. MARXON Group 31M
- Compatible with Vehicle Type: marine rv
Best for: Marine RV dual-purpose choice.
Why it ranks #7: This dual-purpose marine/RV battery lists 825 CCA, 105Ah, 200-minute reserve capacity, and included screws and nuts.
The MARXON Group 31M combines 105Ah capacity with 825 CCA and 1072 MCA, giving marine and RV owners both engine-starting output and sustained deep-cycle power in one battery. Its 200-minute reserve capacity adds a practical reference for loads that continue running after the engine is off.
The dual-purpose design covers rapid starting bursts as well as continuous discharge, which suits users trying to avoid separate starting and house batteries for supported applications. The 105Ah rating and 200 RC offer capacity and reserve figures for planning accessory use, while the 825 CCA and 1072 MCA specify starting capability. Listed dimensions are 12.99 by 6.61 by 8.35 inches; the positive terminal is on the left and negative on the right, aiding installation checks.
- 105Ah capacity
- 825 CCA and 1072 MCA ratings
- 200-minute reserve capacity
- Terminal orientation and dimensions are listed
- The listing includes only the battery and screws, not a broader installation kit.
Skip it if you need 1000 CCA or more; VEVOR EV12-140 is listed at 1000 CCA.
This suits marine or RV owners who want one Group 31M battery for starting and extended loads, with dimensions and terminal orientation stated. Check its 825 CCA rating against the engine’s starting requirement before choosing it.
Full product details
| Brand | MARXON |
|---|---|
| Compatible with Vehicle Type | marine rv |
| Included Components | battery, Screws and nuts |
| Manufacturer | Leoch battery |
| Part Number | AGM31M-105R-A |
| Manufacturer Warranty Description | 2 years |
| Model Number | group 31M |
| Size | group 31M |
Listed on Amazon as: Group 31M Marine Battery Dual Purpose Marxon 12V 105Ah 1072MCA 825CCA
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#8
8. Interstate 8-31MAGMDC
- Voltage: 12 V
- Weight: 64.5 lb
- Compatible with Vehicle Type: Trailer
Best for: Trolling motor and engine use.
Why it ranks #8: The marine/RV dual-purpose AGM provides 825 CCA and has a stated 2-year manufacturer warranty, but misses the target by 175 CCA.
Interstate’s dual-purpose marine/RV AGM battery can start a motor and power a trolling motor whether the engine is on or off. The 100Ah capacity and 825 CCA rating make its core tradeoff clear: one Group 31M battery combines sustained accessory energy with specified cranking power for marine and RV setups.
For a boat setup, the dual-purpose description supports using the battery for both engine starting and trolling-motor demand, rather than assigning those roles to separate batteries. Its 100Ah capacity provides a stated measure for accessory-power planning, while 825 CCA addresses starting. Interstate identifies pure, non-alloy lead construction and rugged-condition use, and lists a 64.5-pound weight; the provided specifications do not state dimensions, so compartment fit requires additional product information.
- Dual-purpose starting and deep-cycle use
- 100Ah capacity
- 825 CCA rating
- Pure, non-alloy lead AGM construction
- The supplied specifications do not state battery dimensions for installation planning.
Skip it if you need dimensions before checking a tight battery compartment; the supplied listing gives none.
This is a fit for marine or RV owners who want a single AGM battery to start an engine and run a trolling motor. Its 100Ah and 825 CCA are useful reference points, but installation dimensions are not provided.
Full product details
| Brand | Interstate Batteries |
|---|---|
| Compatible with Vehicle Type | Trailer |
| Item Weight | 64.5 pounds |
| Manufacturer | Interstate Batteries |
| Part Number | 8-31MAGMDC |
| Manufacturer Warranty Description | 2 Year Manufacturer |
| Size | Group 31M |
| Voltage | 12 volts |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: This product can expose you to chemicals including lead and lead compounds which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov |
Listed on Amazon as: Interstate Batteries Marine/RV Battery 12V 100Ah 825CCA Group 31M AGM
View on Amazon
#9
9. Mighty Max MM-G31M
- Voltage: 12 V
- Weight: 72.5 lb
- Compatible with Vehicle Type: Boat
Best for: Dual-purpose marine power.
Why it ranks #9: This marine AGM offers 110Ah and 1000 MCA, but its listed 825 CCA is below the search target.
The 110Ah capacity pairs engine-starting power with deep-cycle reserve, so this Group 31M battery can crank a boat motor and keep onboard electronics running. Its 825 CCA and 1000 MCA ratings provide the starting figures, while 240 minutes of reserve capacity supports longer periods of use away from shore power.
For boat owners combining engine starts with accessory loads, the 110Ah deep-cycle capacity serves both jobs in one battery. The listed 825 CCA and 1000 MCA provide a clear starting specification, while the 240 RC rating indicates reserve power for electronics and gear. Its spill-proof, maintenance-free AGM construction avoids routine liquid maintenance, and the 13-by-6.81-by-9.37-inch dimensions help assess the battery compartment before installation.
- 110Ah capacity supports starting and deep-cycle use
- 825 CCA and 1000 MCA ratings
- 240-minute reserve capacity
- Spill-proof, maintenance-free AGM construction
- At 72.5 pounds, it is a heavy battery to handle during installation.
Skip it if you need at least 1000 CCA; VEVOR EV12-140 lists 1000 CCA for engine starting.
This fits boat owners seeking one Group 31M battery for cranking and sustained accessory power, with maintenance-free AGM construction. Check the 13-inch length and 72.5-pound weight against the available compartment and your lifting needs.
Full product details
| Brand | Mighty Max Battery |
|---|---|
| Battery Capacity | 110 amp_hours |
| Compatible with Vehicle Type | Boat |
| Included Components | Battery |
| Dimensions | 13"D x 6.81"W x 9.37"H |
| Item Weight | 72.5 pounds |
| Manufacturer | Mighty Max Battery |
| Part Number | MM-G31M |
| Manufacturer Warranty Description | 1 Year Manufacturers Warranty |
| Model Number | MM-G31M |
| Size | Standard |
| Voltage | 12 volts |
Listed on Amazon as: Mighty Max Battery MM-G31M, 12V 110Ah, Group Size 31M Deep-Cycle Marine AGM, Dual-Purpose Starting & Deep Discharge, 825 CCA, 1000 MCA, 240 RC, Spill-Proof Maintenance-Free Battery
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#10
10. Mighty Max MM-G31M-131
- Voltage: 12 V
- Weight: 72.5 lb
- Compatible with Vehicle Type: Boat
Best for: Johnson Marine replacement.
Why it ranks #10: It lists 825 CCA and 110Ah, but the Johnson Marine 115 hp replacement framing is narrower than a general 1000-CCA fit.
This Mighty Max MM-G31M listing specifically names compatibility with Johnson Marine 115 hp engines from 1990–2006, making that application its clearest differentiator. The 110Ah deep-cycle capacity combines with 825 CCA and 1000 CA to support both engine starting and extended power for electronics and other gear.
For the stated Johnson Marine application, the 825 CCA and 1000 CA ratings provide starting figures, while 110Ah capacity supports deep-cycle use for onboard electronics and gear. The battery is listed at 240 RC, adding a reserve-capacity reference for operation away from shore power. Its dimensions are 13 by 6.81 by 9.37 inches, and the 72.5-pound weight matters when handling it. The listing identifies boat compatibility and a maintenance-free, spill-proof AGM design.
- Compatibility listing names Johnson Marine 115 hp, 1990–2006
- 110Ah capacity for starting and deep-cycle use
- 825 CCA and 1000 CA ratings
- 240-minute reserve capacity
- At 72.5 pounds, it is heavy to handle during replacement.
Skip it if you need at least 1000 CCA; VEVOR EV12-140 lists 1000 CCA for starting.
This is aimed at owners of the listed Johnson Marine 115 hp engines from 1990–2006 who want one battery for starting and accessories. Check the application, dimensions, and 72.5-pound handling requirement before installation.
Full product details
| Brand | Mighty Max Battery |
|---|---|
| Battery Capacity | 110 amp_hours |
| Compatible with Vehicle Type | Boat |
| Included Components | Battery |
| Dimensions | 13"D x 6.81"W x 9.37"H |
| Item Weight | 72.5 pounds |
| Manufacturer | Mighty Max Battery |
| Part Number | MM-G31M-131 |
| Manufacturer Warranty Description | 1 Year Manufacturers Warranty |
| Model Number | MM-G31M-131 |
| Size | Standard |
| Voltage | 12 volts |
Listed on Amazon as: Mighty Max Battery MM-G31M Group Size 31 12V, 110Ah, 240RC, 825 CCA, Replacement Battery Compatible with Johnson Marine 115 hp 90-06
View on AmazonAvoid a Group 31 fitment mismatch
A Group 31 label alone does not guarantee that a battery will fit or connect to your equipment. The supplied dimensions vary: the Mighty Max MM-G31M measures 13 by 6.81 by 9.37 inches, while the Crown CRV31S is listed at 13 by 6.77 by 8.44 inches. The MARXON Group 31M lists 12.99 by 6.61 by 8.35 inches.
Terminal position can be a separate trap: MARXON specifies positive on the left and negative on the right, while Odyssey ODX-AGM31M is described with top-post and threaded terminals. Before ordering, compare tray clearance, hold-down space, cable reach, terminal type, and polarity with the battery being replaced.
Product naming and advertised group size are not substitutes for those checks, particularly when replacing a marine battery with a passenger-car or commercial model.
CCA is not the same as deep-cycle endurance
A high CCA rating describes starting output, not how long a battery will run accessories between charges. The products show why the distinction matters: Odyssey ODX-AGM31M lists 1150 CCA, while the Interstate 31-AGM5 pairs 925 CCA with a 100Ah rating and is described for marine and RV deep-cycle use. The VEVOR LiFePO4 Dual Purpose Battery combines 1000 CCA with 140Ah, but its lithium chemistry and 12.8-volt specification create a different charging-system consideration from the 12-volt AGM choices.
Choose by the job: prioritize starting output for engine cranking, and assess capacity and the maker’s cycle-use guidance when powering trolling motors or onboard accessories. Do not infer runtime from CCA alone, or assume a starting-focused battery will suit repeated deep discharges.
How to Choose a Group 31 Battery
Starting output and CCA
Look for a CCA rating that meets or exceeds your vehicle or engine maker’s requirement, rather than treating 1000 CCA as a universal minimum. This lineup ranges from 825 CCA on the Mighty Max MM-G31M and Interstate 8-31MAGMDC to 900 on the Mighty Max MM-G31, 925 on the Interstate 31-AGM5, 950 on the Crown CRV31S, 1000 on the VEVOR, and 1150 on the Odyssey models. Higher listed CCA is relevant when starting demand is the priority, but it does not alone establish fit or runtime.
Buyers needing exactly 1000 CCA can consider VEVOR; those seeking a higher listed starting rating can compare the Odyssey options, subject to compatibility.
Capacity and intended use
Match the battery’s stated capacity and design to whether it mainly starts an engine or also powers accessories. Listed capacity runs from 100Ah on the Crown CRV31S and Mighty Max MM-G31 to 105Ah on MARXON Group 31M, 110Ah on Mighty Max MM-G31M, and 140Ah on the VEVOR. Marine and RV options include dual-purpose descriptions, while Crown is framed for commercial trucks and heavy equipment, and Mighty Max MM-G31 is listed for passenger cars.
Frequent accessory use favours a product explicitly described for deep cycling and with suitable capacity; a buyer focused on a passenger-car starting application may favour the car-compatible Mighty Max, provided its 900 CCA meets requirements.
Chemistry and charging compatibility
Check battery chemistry against the charging equipment before choosing between lithium and AGM. The VEVOR is a 12.8-volt LiFePO4 battery with a built-in BMS, while the other products in this set are identified as AGM. That distinction matters because the product data does not establish that every vehicle alternator, shore charger, or solar controller is compatible with lithium charging.
Buyers with a system confirmed for LiFePO4 can consider the VEVOR’s 1000 CCA and 140Ah; buyers whose system calls for AGM can compare options such as the Crown, Interstate, Mighty Max, or Odyssey models. Confirm charging instructions and equipment compatibility with the relevant manufacturers before installing a different chemistry.
Which Group 31 Battery Should You Choose?
Choose the VEVOR LiFePO4 Dual Purpose Battery if you need exactly 1000 CCA, want 140Ah, and have charging equipment compatible with its lithium chemistry. For a marine dual-purpose AGM with stronger listed CCA, consider Odyssey ODX-AGM31M at 1150 CCA; verify dimensions and terminals first. The Crown CRV31S is the most application-specific fit for commercial trucks and heavy equipment, with 950 CCA and 100Ah.
For marine/RV deep-cycle use, compare Interstate 31-AGM5 at 925 CCA with MARXON Group 31M at 825 CCA and 105Ah. Passenger-car buyers can consider Mighty Max MM-G31 at 900 CCA if that meets the vehicle requirement.
In every case, confirm fitment, polarity, and charging compatibility before replacing a battery.
Related Buying Guides
Frequently Asked Questions
Will a Group 31 battery fit my battery tray and connect to my existing terminals?
Not necessarily; Group 31 identifies a battery size category, but you should confirm the specific battery’s dimensions, terminal type, polarity, and cable reach against your tray and vehicle. The listed products vary, and the article’s verdict specifically advises checking dimensions and terminals before choosing the Odyssey marine option. Verify fitment before replacing your battery.
Can my alternator, charger, or solar setup charge a LiFePO4 Group 31 battery?
Only if the charging equipment is compatible with the battery’s lithium chemistry and 12.8-volt system. The VEVOR model is LiFePO4, so do not assume an existing alternator, charger, or solar setup will work with it. Check the equipment and battery requirements, and confirm compatibility before choosing this battery.
How should I choose between a starting battery and a dual-purpose marine battery?
Choose based on the job: a starting battery is intended for engine starts, while a dual-purpose marine battery also supports deep-cycle use. Among these listings, the VEVOR offers 1000 CCA and 140Ah, while the Odyssey ODX-AGM31M is a dual-purpose marine AGM with 1150 CCA. Confirm your application’s requirements before deciding.
What should I prioritize if I need both starting power and longer deep-cycle use?
Compare the battery’s stated CCA with its capacity and intended use. The listed VEVOR provides 1000 CCA and 140Ah, while marine/RV options include the Interstate 31-AGM5 at 925 CCA and the MARXON at 825 CCA and 105Ah. Match those figures and battery type to your equipment’s requirements.
What should I verify before replacing my current battery?
Confirm the replacement’s physical fit, terminal arrangement, polarity, and charging compatibility with your vehicle or equipment. Also check that its starting and deep-cycle capabilities meet your application’s requirements. These checks matter across the listed AGM and lithium options; the VEVOR in particular requires a compatible lithium charging system.
Final Words
For exactly 1000 CCA plus deep-cycle capacity, the VEVOR is the standout listed option, provided your charging equipment supports its lithium chemistry. If you need a marine dual-purpose AGM with higher listed CCA, consider the Odyssey ODX-AGM31M. For commercial trucks, marine/RV use, or passenger cars, compare the application-specific options and their stated ratings.
Before buying any replacement, confirm tray fit, terminals, polarity, and charging compatibility.


