A strong choice for an auto replacement delivers the right group-size fit, sufficient starting power, and battery chemistry suited to the vehicle. This roundup compares 10 listed batteries, from Group 35 AGM options to larger AGM and lightweight lithium models. Mighty Max Battery MM-G35 leads as a straightforward Group 35 AGM candidate with 650 CCA and a 100-minute reserve capacity.
Those figures are useful only if your car calls for that size and its terminal layout matches. The list also includes products with higher stated CCA, longer warranty descriptions, or different battery chemistry, but none should be treated as universal replacements.
Check your owner’s manual and existing battery before choosing; dimensions, polarity, and vehicle-specific charging requirements can rule out an otherwise appealing option.
Mighty Max Battery MM-G35 is the leading pick for drivers whose vehicle specifies a Group 35 battery. It combines a 12-volt, 55Ah AGM design with 650 CCA and 100 minutes of reserve capacity, making its listed specifications a balanced match for ordinary starting needs. Its dimensions are 9.06 by 6.89 by 8.82 inches.
Confirm group size, terminal position, and required specifications against your current battery before ordering; this model is not a universal fit.
Our Top Picks
Best OverallThis Group 35 AGM pairs 55Ah capacity with 650 CCA and 100-minute reserve capacity, a practical specification set for a matching passenger car.
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Longest WarrantyIts Group 35 dimensions, 55Ah capacity, and 650 CCA closely match the lead choice, while the listed warranty description is three years.
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Highest CCAFor a vehicle requiring Group 47, its 680 CCA and 60Ah capacity exceed the Group 35 picks; it lists a 36-month warranty.
View on Amazon- Start-Stop AGM ACDelco Gold 48AGM
- Highest Starting Power OPTIMA RedTop 34/78
Compare the options by fit and battery type
| # | Product | Dimensions | Voltage | Compatible with Vehicle Type | Buy |
|---|---|---|---|---|---|
| 1 | 1. Mighty Max Battery MM-G35Best Overall | 9.06"D x 6.89"W x 8.82"H | 12 V | Passenger Car | View on Amazon |
| 2 | 2. Daakmax Group 35 AGMLongest Warranty | 6.89"D x 9.06"W x 8.82"H | 12 V | Passenger Car, SUV | View on Amazon |
| 3 | 3. Relistart Group 47 AGMHighest CCA | 9.53"D x 6.85"W x 7.48"H | 12.8 V | — | View on Amazon |
| 4 | 4. ACDelco Gold 48AGMStart-Stop AGM | 7.5"D x 11.9"W x 7.6"H | 12 V | Truck | View on Amazon |
| 5 | 5. ACDelco Gold 94RAGMGroup 94R AGM multi-vehicle fit | 12.4"D x 6.9"W x 7.5"H | 12 V DC | Passenger Car, SUV/Crossover, Truck, Van | View on Amazon |
| 6 | 6. MARXON Group 140R AGMH4 start-stop AGM replacements | 6.89"D x 8.15"W x 7.48"H | 12 V | Passenger Car | View on Amazon |
| 7 | 7. OPTIMA RedTop 34/78Highest Starting Power | 6.88"D x 10"W x 7.81"H | 12 V | Passenger Car, Truck | View on Amazon |
| 8 | 8. ECIENWELL 40Ah LithiumCompact lithium start-stop cars | — | — | Passenger Car | View on Amazon |
| 9 | 9. NebuQuic 40Ah LithiumLightweight lithium start-stop seekers | — | 12 V | — | View on Amazon |
| 10 | 10. Wuldnmar Group 47 LithiumLightweight Group 47 lithium swaps | 6.9"D x 9.6"W x 7.76"H | 12.8 V | Passenger Car | View on Amazon |
Detailed Reviews: Best Battery Cheap For Auto

#1 · Best Overall
1. Mighty Max Battery MM-G35
- Dimensions: 9.06"D x 6.89"W x 8.82"H
- Voltage: 12 V
- Compatible with Vehicle Type: Passenger Car
Best for: Group 35 all-weather starters.
Why it ranks #1: This Group 35 AGM pairs 55Ah capacity with 650 CCA and 100-minute reserve capacity, a practical specification set for a matching passenger car.
The Mighty Max MM-G35 pairs 650 CCA with a 100-minute reserve capacity, giving Group 35 passenger cars strong starting output and a measure of reserve power for longer operating demands. Its sealed AGM construction also keeps the battery spill-proof, a practical choice for drivers seeking a contained, low-mess replacement.
A 12V, 55Ah rating and 650 CCA provide the starting output specified for this passenger-car battery, while the 100-minute reserve capacity supports longer run times. The AGM design is sealed and spill-proof, and its high-discharge output and deep-discharge recovery help maintain steady power. At 41 pounds and 9.06 by 6.89 by 8.82 inches, it is a substantial Group 35 replacement; check space and terminal arrangement against the existing battery before installation.
- 650 CCA starting output
- 100-minute reserve capacity
- Sealed, spill-proof AGM design
- Deep-discharge recovery feature
- At 41 pounds, it is relatively heavy to handle during installation.
Skip it if you need a lithium battery or a different group size; this is a 41-pound Group 35 AGM unit.
Choose this for a passenger car requiring a Group 35 AGM battery, with 650 CCA and reserve capacity as priorities. Its 41-pound weight and fixed Group 35 dimensions make handling and physical fit important considerations.
Full product details
| Brand | Mighty Max Battery |
|---|---|
| Battery Capacity | 55 amp_hours |
| Compatible with Vehicle Type | Passenger Car |
| Included Components | Battery |
| Dimensions | 9.06"D x 6.89"W x 8.82"H |
| Item Weight | 41 pounds |
| Manufacturer | Mighty Max Battery |
| Part Number | MM-G35 |
| Manufacturer Warranty Description | 1 Year Manufacturers Warranty |
| Model Number | MM-G35 |
| Size | Group 35 |
| Voltage | 12 volts |
Listed on Amazon as: Mighty Max Battery MM-G35 Start and Stop Car BCI Group Size 35 12V 55Ah, 100RC, 650 CCA Rechargeable AGM Car battery
View on Amazon
#2 · Longest Warranty
2. Daakmax Group 35 AGM
- Dimensions: 6.89"D x 9.06"W x 8.82"H
- Voltage: 12 V
- Compatible with Vehicle Type: Passenger Car, SUV
Best for: Group 35 vibration-conscious drivers.
Why it ranks #2: Its Group 35 dimensions, 55Ah capacity, and 650 CCA closely match the lead choice, while the listed warranty description is three years.
Daakmax specifies 650 CCA and 100RC for its Group 35 AGM battery, while additional product information describes increased resistance to vibration. Together, those features suit drivers seeking starting output and reserve capacity in a battery intended to tolerate vibration, provided the Group 35 dimensions and terminal orientation match.
The 12V, 55Ah battery measures 9.06 by 6.89 by 8.82 inches and weighs 37 pounds, giving buyers concrete fit and handling details for a Group 35 replacement. Its 650 CCA supports starting, and 100RC provides the listed reserve-capacity figure. The tapered terminals are specified with negative on the left and positive on the right. Additional product information describes greater vibration resistance than standard batteries, relevant to buyers concerned about vibration exposure.
- 650 CCA
- 100RC reserve capacity
- Group 35 dimensions specified
- Product information describes increased vibration resistance
- Its compatibility is listed for passenger cars and SUVs, not trucks.
Skip it if you need a battery listed for truck use; the OPTIMA 34/78 RedTop specifies passenger cars and trucks.
This fits buyers seeking a Group 35 AGM for a passenger car or SUV, especially where the stated vibration resistance matters. Verify its left-negative, right-positive terminal layout and dimensions against the current battery.
Full product details
| Brand | Daakmax |
|---|---|
| Compatible with Vehicle Type | Passenger Car, SUV |
| Included Components | Battery Only |
| Dimensions | 6.89"D x 9.06"W x 8.82"H |
| Item Weight | 37 pounds |
| Manufacturer | Daakmax |
| Part Number | BAB-0059DK |
| Manufacturer Warranty Description | 3 Years Warranty |
| Model Number | BAB-0059DK |
| Size | Group 35 |
| Voltage | 12 volts |
Listed on Amazon as: Platinum AGM Car Battery Group Size 35, 12V 55Ah, 650 CCA, 100 RC
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#3 · Highest CCA
3. Relistart Group 47 AGM
- Dimensions: 9.53"D x 6.85"W x 7.48"H
- Voltage: 12.8 V
Best for: Group 47 higher-capacity AGM.
Why it ranks #3: For a vehicle requiring Group 47, its 680 CCA and 60Ah capacity exceed the Group 35 picks; it lists a 36-month warranty.
The Relistart Group 47 pairs 60Ah capacity with 680 CCA and a 105RC reserve figure, giving buyers a specified combination of starting output and reserve capacity. Its 12V AGM start-stop description and H5 size identify the intended replacement category, while tapered terminals make polarity and connection layout important installation checks.
The 9.53 by 6.85 by 7.48-inch dimensions define the listed Group 47 battery's space requirements, and its tapered terminals are oriented left negative and right positive. The 60Ah capacity, 680 CCA, and 105RC figures describe capacity, starting output, and reserve. Its AGM start-stop designation points to the intended operating category. Weighing 39.2 pounds, it also requires consideration during lifting and positioning; compare its size and polarity with the current battery.
- 60Ah capacity
- 680 CCA starting rating
- 105RC reserve figure
- Tapered terminals with polarity specified
- At 39.2 pounds, it is heavier to handle than the listed lithium options.
Skip it if you want a lighter lithium battery; the Wuldnmar G47 weighs 11 pounds and uses LiFePO4 chemistry.
This suits drivers whose vehicle calls for a Group 47/H5 AGM and who value the listed 60Ah, 680 CCA, and 105RC figures. Confirm the dimensions and left-negative terminal orientation before installation.
Full product details
| Brand | Relistart |
|---|---|
| Included Components | 1 * Group 47-12V 60Ah |
| Dimensions | 9.53"D x 6.85"W x 7.48"H |
| Item Weight | 39.2 pounds |
| Manufacturer | JYC Battery Manufacturer Co., Ltd. |
| Part Number | Group 47-12V 60Ah |
| Manufacturer Warranty Description | 36 Months Warranty |
| Model Number | 12V 60Ah |
| Voltage | 12.8 volts |
Listed on Amazon as: AGM Battery BCI Group 47 Car Battery-12v 60Ah H5 Size 47 Automotive Battery, 12V Battery Start and Stop Rechargeable Auto Starting Power, Deep Cycle, 36 Months Warranty, 105RC, 680CCA
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#4 · Start-Stop AGM
4. ACDelco Gold 48AGM
- Dimensions: 7.5"D x 11.9"W x 7.6"H
- Voltage: 12 V
- Compatible with Vehicle Type: Truck
Best for: AGM cycle-focused truck owners.
Why it ranks #4: This AGM is described for start-stop applications and has a 36-month free replacement and limited warranty; confirm its standard size fits your vehicle.
The ACDelco Gold 48AGM combines high-density negative paste with a silver-calcium alloy, features identified as supporting performance, cycle life, and battery life. Its AGM construction is described as leak- and spill-proof, making it a fit to consider for truck owners seeking a cycling-capable battery for start-stop applications.
ACDelco's high-density negative paste supports performance and battery life, while the silver-calcium stamped alloy is specified to increase cycle life and improve performance. A calcium-lead positive grid maximizes conductivity and allows low resistance. The robust envelope separator promotes acid circulation and helps prevent shorts; improved circulation also helps the battery remain cool. The product description identifies AGM cycling capability and charge receptivity for start-stop vehicles, giving buyers several relevant operating features in one unit.
- High-density negative paste
- Silver-calcium alloy supports cycle life
- Calcium-lead grid maximizes conductivity
- AGM design is leak- and spill-proof
- The supplied specifications identify truck compatibility, not passenger-car compatibility.
Skip it if you need a battery explicitly listed for passenger cars; the specifications identify this one for trucks.
Consider this ACDelco AGM for a truck or a start-stop application where cycling capability, charge receptivity, and spill resistance matter. Its listed vehicle type is truck, so passenger-car buyers should select a product with that compatibility stated.
Full product details
| Brand | ACDelco |
|---|---|
| Compatible with Vehicle Type | Truck |
| Dimensions | 7.5"D x 11.9"W x 7.6"H |
| Item Weight | 45.5 pounds |
| Manufacturer | ACDelco |
| Part Number | 88864541 |
| Manufacturer Warranty Description | 36 Month Free Replacement / Limited Warranty |
| Model Number | 48AGM |
| Size | Standard |
| 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: Cancer – www.P65Warnings.ca.gov |
Listed on Amazon as: ACDelco Gold Automotive Battery 48AGM | PN 88864541
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#5
5. ACDelco Gold 94RAGM
- Dimensions: 12.4"D x 6.9"W x 7.5"H
- Voltage: 12 V DC
- Compatible with Vehicle Type: Passenger Car, SUV/Crossover, Truck, Van
Best for: Group 94R AGM multi-vehicle fit.
Why it ranks #5: A 12V AGM option for vehicles calling for Group 94R/H7, with a 36-month limited warranty; its 12.4-inch length demands a size check.
The ACDelco Gold 94RAGM pairs a pressurized valve system with robust envelope separators and high-density plate construction, supporting leak resistance and dependable automotive service. Its 12V Group 94R/H7 specification and listed passenger-car, SUV, truck, and van compatibility help define a broad range of potential replacement applications.
The 94RAGM is specified for vehicles requiring a 12V AGM Group 94R/H7 battery, and its 12.4 by 6.9 by 7.5-inch dimensions give buyers concrete space measurements to compare. High-density negative paste supports performance and cycle life, while the puncture-resistant envelope separator promotes acid circulation and helps prevent shorts. A leak-resistant pressurized valve system adds another containment feature. Listed vehicle types include passenger cars, SUVs, trucks, and vans.
- Group 94R/H7 AGM specification
- High-density negative paste
- Puncture-resistant envelope separator
- Listed for cars, SUVs, trucks, and vans
- At 51.6 pounds, it is heavy to lift and position during installation.
Skip it if you need a lighter battery to handle; this ACDelco weighs 51.6 pounds.
Choose this for a vehicle that calls for a 12V Group 94R/H7 AGM and appears among its listed vehicle types. Its separators and valve system address containment and circulation, but its weight makes installation handling a consideration.
Full product details
| Brand | ACDelco |
|---|---|
| Compatible with Vehicle Type | Passenger Car, SUV/Crossover, Truck, Van |
| Included Components | Vehicle Battery |
| Dimensions | 12.4"D x 6.9"W x 7.5"H |
| Item Weight | 51.6 pounds |
| Manufacturer | ACDelco |
| Part Number | 88864542 |
| Manufacturer Warranty Description | 36 Months/Unlimited Miles Limited Warranty (Parts Only) |
| Model Number | 94RAGM |
| Size | Pack of 1 |
| Voltage | 12 volts_of_direct_current |
| 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: Cancer – www.P65Warnings.ca.gov |
Listed on Amazon as: ACDelco Gold Automotive Battery 94RAGM | PN 88864542
View on Amazon
#6
6. MARXON Group 140R AGM
- Dimensions: 6.89"D x 8.15"W x 7.48"H
- Voltage: 12 V
- Compatible with Vehicle Type: Passenger Car
Best for: H4 start-stop AGM replacements.
Why it ranks #6: This maintenance-free 50Ah AGM lists 570 CCA and start-stop compatibility, but its H4/140R size limits it to vehicles requiring that fit.
The MARXON Group 140R H4 LN1 combines 50Ah capacity and 570 CCA with AGM construction, enabling start-stop use in vehicles that call for this battery size. Its maintenance-free specification and stated faster-charging claim make it relevant to drivers seeking an AGM replacement with reduced routine battery upkeep.
This 12V battery measures 8.15 by 6.89 by 7.48 inches and lists an A1 terminal, details that help assess installation space and connection layout for a Group 140R, H4, or LN1 replacement. The 50Ah capacity and 570 CCA provide the stated capacity and starting rating. AGM construction is marked maintenance-free and supports start-stop use; the manufacturer also states charging is 40% faster than an SLA battery.
- 50Ah capacity
- 570 CCA starting rating
- Maintenance-free AGM construction
- Listed for start-stop vehicles
- The 570 CCA rating is lower than the 650 CCA Group 35 options listed here.
Skip it if you need more than 570 CCA; the Mighty Max MM-G35 lists 650 CCA for its Group 35 format.
This is for a vehicle calling for Group 140R, H4, or LN1 and AGM start-stop capability, with 50Ah and 570 CCA. Check its 8.15-inch length and A1 terminal layout against the battery being replaced.
Full product details
| Brand | MARXON |
|---|---|
| Compatible with Vehicle Type | Passenger Car |
| Dimensions | 6.89"D x 8.15"W x 7.48"H |
| Manufacturer | Leoch battery |
| Part Number | MX-140R |
| Size | H4 / Group 140R |
| Voltage | 12 volts |
Listed on Amazon as: Group 140R H4 LN1 Car Battery 12v 50AH 570CCA AGM Maintenance Free
View on Amazon
#7 · Highest Starting Power
7. OPTIMA RedTop 34/78
- Dimensions: 6.88"D x 10"W x 7.81"H
- Voltage: 12 V
- Compatible with Vehicle Type: Passenger Car, Truck
Best for: High-CCA dual-terminal starters.
Why it ranks #7: Its 800 CCA is the strongest stated figure here, and dual SAE and GM terminals add flexibility for compatible cars, trucks, and SUVs.
The OPTIMA RedTop 34/78 delivers 800 CCA and provides both SAE and GM terminals, enabling high-output starting with connection options for vehicles using either post style. Its spiral-cell AGM construction and stated bad-weather starting capability make it an option for passenger cars and trucks needing a starting-focused battery.
The 800 CCA rating supports strong cranking output, while the dual SAE and GM posts give buyers two terminal formats in one battery. OPTIMA's SpiralCell technology uses 99.99% pure lead, and the product description connects that construction with power and starting performance in bad weather. A 100-minute reserve capacity and 50Ah C20 capacity provide additional operating figures. The 10.06 by 6.94 by 7.88-inch size and 38.8-pound weight inform fit and handling.
- 800 CCA starting rating
- Dual SAE and GM terminals
- 100-minute reserve capacity
- SpiralCell technology
- Its stated 50Ah C20 capacity is lower than the 55Ah Group 35 batteries listed here.
Skip it if you prioritize a 55Ah rating; the Mighty Max MM-G35 lists 55Ah in Group 35.
This suits car or truck owners prioritizing 800 CCA, dual terminal styles, and starting performance in bad weather. Its dimensions, terminal arrangement, and 50Ah C20 figure should align with the vehicle's requirements.
Full product details
| Brand | OPTIMA |
|---|---|
| Compatible with Vehicle Type | Passenger Car, Truck |
| Included Components | battery |
| Dimensions | 6.88"D x 10"W x 7.81"H |
| Item Weight | 38.8 pounds |
| Manufacturer | OPTIMA |
| Part Number | 8004-003 |
| Manufacturer Warranty Description | parts |
| Model Number | 8004-003 |
| Size | 10 x 6-7/8 x 7-13/16 inch |
| Voltage | 12 volts |
Listed on Amazon as: OPTIMA Batteries High Performance 34/78 RedTop Sealed AGM Car, Truck, and SUV Starting Battery, 800 CCA, Dual SAE and GM Terminals, Maintenance Free, Versitile Mounting
View on Amazon
#8
8. ECIENWELL 40Ah Lithium
- Compatible with Vehicle Type: Passenger Car
Best for: Compact lithium start-stop cars.
Why it ranks #8: The lithium battery lists 660 CCA and 100 reserve minutes, but its guidance limits suitability to engines below 2.0L and calls for fit checks.
The ECIENWELL combines 12V lithium power with a 40Ah capacity and 660 CCA, bringing start-stop starting capability in a 14.8-pound package. Its IP66 waterproof rating adds a stated protection feature, while the listed guidance limits its suitability to vehicles with engines below 2.0L.
At 9.5 by 6.9 by 8 inches and 14.8 pounds, this lithium battery offers a notably compact, light package for a compatible passenger car. The 660 CCA and 100RC figures pair starting output with reserve capacity, while the 40Ah rating identifies its capacity. IP66 waterproofing is another listed feature. The maker recommends a full charge before first use and suitability for engines below 2.0L, so those requirements shape preparation and vehicle choice.
- 12V, 40Ah lithium battery
- 660 CCA starting rating
- 100RC reserve capacity
- IP66 waterproof rating
- Listed suitability is limited to vehicles with engine displacement below 2.0L.
Skip it if you have an engine of 2.0L or larger; this battery's stated suitability is for smaller engines.
This suits drivers of compatible sub-2.0L vehicles seeking a lightweight 40Ah lithium start-stop battery with 660 CCA. Account for the full-charge-before-first-use recommendation, and ensure the vehicle's size and requirements match.
Full product details
| Brand | ECIENWELL |
|---|---|
| Compatible with Vehicle Type | Passenger Car |
| Included Components | 12V 40Ah Lithium Battery |
| Manufacturer | ECIENWELL |
| Part Number | ECW1240N |
| Manufacturer Warranty Description | Technical Support |
| Model Number | ECW1240N |
Listed on Amazon as: Lithium LiFePO4 Car Battery Auto Battery, 12V 40Ah, 660CCA, 100RC Deep Cycle Start and Stop Car Batteries, IP66 Waterproof, H5 H6 H7 Automotive Replacement Battery for Cars, Trucks
View on AmazonWhy it ranks #9: This 40Ah LiFePO4 model lists a five-year manufacturer warranty, but the supplied details do not establish its dimensions or broad vehicle fit.
The NebuQuic combines a 40Ah lithium battery with a 660CCA rating and 100RC reserve figure, bringing start-stop capability in a 12V format. Its title also identifies a built-in BMS and IP66 waterproofing, features that distinguish its stated lithium setup for buyers considering an automotive battery replacement.
NebuQuic lists a 12V, 40Ah lithium automotive battery with 660CCA and 100RC, pairing a starting rating with a reserve-capacity figure. The title specifies a BMS, or battery management system, and IP66 waterproofing. At 15 pounds according to the specifications, it offers a light handling profile compared with many conventional automotive batteries. Its stated H5, H6, and AGM Group 48 replacement language helps narrow the intended size category, though vehicle requirements still govern fit.
- 40Ah lithium capacity
- 660CCA rating
- 100RC reserve figure
- BMS and IP66 waterproofing stated
- The supplied specifications do not provide battery dimensions or terminal orientation.
Skip it if you need listed dimensions and terminal orientation before choosing; this product information does not supply either detail.
Consider this for a buyer seeking a 40Ah lithium start-stop battery with BMS, IP66 protection, and a 15-pound listed weight. The missing dimensions and terminal details make it a poor choice when those fit measurements are essential.
Full product details
| Brand | NebuQuic |
|---|---|
| Battery Capacity | 40 amp_hours |
| Included Components | 1*12V 40Ah Automotive Battery |
| Item Weight | 15 pounds |
| Manufacturer | NebuQuic |
| Part Number | Nebu-A1240-2 |
| Manufacturer Warranty Description | 5 Year Manufacturer |
| Model Number | 12V 40Ah |
| Voltage | 12 volts |
Listed on Amazon as: 12V Car Battery 660CCA 100RC LiFePO4 Start and Stop Batteries, 40Ah Lithium Auto Battery with BMS, Rechargeable Automotive Batteries, H5 H6 AGM Group 48 Replacement, IP66 Waterproof
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#10
10. Wuldnmar Group 47 Lithium
- Dimensions: 6.9"D x 9.6"W x 7.76"H
- Voltage: 12.8 V
- Compatible with Vehicle Type: Passenger Car
Best for: Lightweight Group 47 lithium swaps.
Why it ranks #10: Its lightweight 11-pound build and 600 CCA may suit a compatible Group 47 vehicle, but the listed warranty is one year and charging requires suitable equipment.
The Wuldnmar G47 weighs about 11 pounds and uses LiFePO4 chemistry, enabling a much lighter handling profile for a Group 47 lithium start-stop battery. Its stated 600 CCA and 12.8V specifications give buyers key electrical figures, while its H5 size places it in a defined replacement category.
At 9.60 by 6.92 by 7.75 inches and about 11 pounds, this G47 lithium battery provides fit measurements alongside a lighter lifting profile. The 12.8V LiFePO4 design is rated at 600 CCA, with the listing also noting testing up to 850 CCA. The maker says to use a charger specially equipped or recognized for the battery, an important charging requirement for ownership and maintenance. Match its polarity and group size to the vehicle.
- About 11-pound listed weight
- LiFePO4 chemistry
- 600 CCA rating
- Group 47/H5 size
- Requires a specially equipped or recognized charger for charging.
Skip it if you need a battery compatible with a conventional unspecified charger; the maker requires a specially equipped or recognized charger.
This suits a Group 47/H5 vehicle owner seeking a lightweight LiFePO4 start-stop replacement. Its 600 CCA rating, dimensions, polarity, and charging-equipment requirement all matter, so confirm the vehicle and charger suit this battery.
Full product details
| Brand | Wuldnmar |
|---|---|
| Compatible with Vehicle Type | Passenger Car |
| Dimensions | 6.9"D x 9.6"W x 7.76"H |
| Item Weight | 11 pounds |
| Manufacturer | Wuldnmar |
| Part Number | 1 |
| Manufacturer Warranty Description | 1 Year |
| Model Number | G47 |
| Size | G47-Lithium |
| Voltage | 12.8 volts |
Listed on Amazon as: 12V BCI Group 47 LiFePO4 Lithium Car Battery 600CCA Lightweight Automotive Start-Stop Battery Size H5
View on AmazonAvoiding fit and charging mismatches
A battery can have adequate starting output and still be the wrong replacement if its case, terminals, or chemistry do not match the vehicle. Group labels are useful starting points: these listings include Group 35, Group 47, Group 48, 94R/H7, and H4/140R, which are not interchangeable based on voltage alone. Compare the existing battery’s group, dimensions, terminal orientation, and polarity with the listing before purchase.
A specific trap is assuming that a product title mentioning several group sizes proves universal fit; the ECIENWELL listing, for example, advises checking compatibility and says it suits engines below 2.0L. Lithium options add a charging-system consideration: Wuldnmar says to use a specially equipped or recognized charger.
If the vehicle’s required chemistry or charging compatibility is unclear, verify it in the manual or with a qualified installer before switching battery types.
How to Choose an Auto Replacement Battery
Group size and terminal fit
Start by matching the required BCI group and the battery’s dimensions and terminal orientation. The products span Group 35 at about 9.06 by 6.89 by 8.82 inches, Group 47 at about 9.53 by 6.85 by 7.48 inches, and H4/140R at about 8.15 by 6.89 by 7.48 inches. The ACDelco 94RAGM is longer still at 12.4 inches.
These are distinct fitments, not a menu of interchangeable upgrades. A driver replacing a Group 35 battery should focus on the Group 35 options; a vehicle calling for H7 should compare against the 94R listing.
Check polarity and terminal placement too, especially where a listing provides those details.
Starting output and reserve capacity
Choose CCA and reserve capacity according to the vehicle’s requirements rather than selecting the largest numbers automatically. Listed CCA ranges from 570 on the MARXON Group 140R AGM to 800 on the OPTIMA RedTop 34/78; the Group 35 Mighty Max and Daakmax both list Reserve capacity is stated as 100 minutes for those Group 35 batteries and the OPTIMA, while the Relistart Group 47 lists 105 minutes.
Higher output can matter for a vehicle that requires it, but it cannot compensate for a mismatched group size or terminals. For a compatible Group 35 car, either 650-CCA option is a closer specification match; follow the vehicle maker’s required minimums.
Battery chemistry and warranty
Match the battery chemistry to the vehicle and consider the listed warranty description as one part of the choice. Most products here are AGM, including the Group 35 Mighty Max and Daakmax; several others are lithium LiFePO4, such as ECIENWELL and Wuldnmar. Do not assume a lithium model is a drop-in replacement: Wuldnmar specifies suitable charging equipment, and ECIENWELL gives an engine-displacement limitation.
Listed warranty terms also vary, from one year for Wuldnmar to five years for NebuQuic, while ACDelco lists 36 months for both Gold models. A buyer prioritizing a familiar AGM replacement should begin with the required AGM size; consider lithium only after confirming vehicle and charging compatibility.
Which Auto Battery Should You Choose?
Choose Mighty Max Battery MM-G35 if your vehicle requires Group 35: it offers 650 CCA, 55Ah, and 100 minutes of reserve capacity. Daakmax Group 35 AGM is a close alternative with the same stated capacity and CCA plus a three-year warranty description. For a Group 47 fit, consider Relistart Group 47 AGM, which lists 680 CCA, 60Ah, and a 36-month warranty.
If your car specifies Group 48 or 94R/H7 and AGM, compare the matching ACDelco model rather than substituting a different group. Drivers seeking a high-CCA option can consider OPTIMA RedTop 34/78 only if its size and dual-terminal configuration fit.
Treat lithium options as vehicle-specific choices and verify charging compatibility before switching chemistry.
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Frequently Asked Questions
How do I confirm my car’s battery group size and terminal orientation?
Check the owner’s manual and the label on your current battery for the specified group size and terminal layout. Compare the replacement’s dimensions and terminal positions with the existing battery, and confirm that the tray and cables will fit. Verify the required specifications and fitment for your exact vehicle before ordering.
Can I replace a conventional lead-acid battery with a lithium car battery?
Only if the lithium battery is compatible with your vehicle’s charging system and installation requirements. Check the vehicle guidance and the battery maker’s compatibility information before switching chemistry; matching voltage or a listed replacement group alone does not confirm suitability. If compatibility is unclear, ask a qualified automotive technician before installing it.
What should I do if a new car battery will not start the vehicle?
First confirm the battery is the correct fit and that its terminals are clean, secure, and connected with the correct polarity. Check that the battery is charged and that the connections are not loose. If the vehicle still will not start, avoid repeated attempts and have the battery and starting system checked by a qualified technician.
How much cold-cranking power should I look for?
Choose a battery that meets the vehicle maker’s cold-cranking amp requirement, rather than selecting by the largest number alone. CCA is one specification to compare, but group size, terminal position, battery type, and the vehicle’s stated requirements also matter. Confirm all of these against your manual or current battery before ordering.
What does reserve capacity tell me when comparing batteries?
Reserve capacity indicates how long a fully charged battery can supply power under a defined test condition, so it can help distinguish otherwise suitable options. Compare the listed figure with your vehicle’s requirements, but do not use it to justify a different group size or incompatible battery type. Fit and required specifications come first.
Final Words
Start with the battery group and terminal layout specified for your vehicle, then check the required battery type and performance figures. For a Group 35 vehicle, the Mighty Max MM-G35 is the leading pick in this roundup; the Daakmax is a close Group 35 alternative. Consider the listed Group 47 or ACDelco options only when their group matches your car.
Treat lithium choices as vehicle-specific and verify charging compatibility before switching.



