A strong lithium-ion car battery pairs the correct BCI group and terminal layout with enough cold-cranking amps for your vehicle; it suits drivers replacing a compatible 12V starting battery, including some start-stop models. This roundup compares 10 LiFePO4 or solid-state options across Group 26, 47, and 48, with listed cranking ratings from 600 to 1,200 CCA. The Mighty Max Battery MM-H5LI leads for its Group 47 fit, 700 CCA, 27Ah capacity, 62-minute reserve capacity, and built-in BMS.
Other picks offer higher listed CCA, lighter weights, or alternate group sizes. Check your vehicle requirements before ordering: similar-looking batteries may differ in dimensions, polarity, charging requirements, and BMS settings, so a group label alone does not confirm compatibility.
The Mighty Max Battery MM-H5LI is the best overall choice in this group for buyers seeking a Group 47 lithium starting battery. It lists 700 CCA, 27Ah capacity, a 62-minute reserve capacity, and a built-in BMS, with start-stop compatibility stated in the product title and features. Its listed dimensions are 9.5 × 7 × 7.5 inches and weight is 11.8 pounds.
Confirm those measurements, terminal orientation, and your vehicle’s battery requirements before purchase; a shared group number does not by itself guarantee a correct fit.
Our Top Picks
Best OverallGroup 47 fit, 700 CCA, 27Ah capacity, 62-minute reserve capacity, and a built-in BMS make its listed starting specifications especially complete.
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High Cranking OutputThis Group 47 battery lists 800 CCA, 23Ah capacity, and 12.8V, with dimensions matching the listed H5 form factor.
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Display and Start ButtonThis Group 47, 12.8V battery lists 600 CCA and includes a battery charge display and emergency start button.
View on Amazon- Lightweight Group 47 Wuldnmar G47
- Long Reserve Capacity ECIENWELL 40Ah
Compare the Lithium Car Battery Options
| # | Product | Dimensions | Weight | Voltage | Buy |
|---|---|---|---|---|---|
| 1 | 1. Mighty Max MM-H5LIBest Overall | 9.5"D x 7"W x 7.5"H | 11.8 lb | 12.8 V | View on Amazon |
| 2 | 2. OMUGO Group 47High Cranking Output | 6.9"D x 9.6"W x 7.76"H | 11 lb | 12.8 V | View on Amazon |
| 3 |  3. Forgetyo Group 47High-CCA Group 47 option | 9.4"D x 6.9"W x 7.5"H | 12.8 lb | — | View on Amazon |
| 4 | 4. SDULIBITIY Group 47Display and Start Button | — | 6.21 kg | 12.8 V | View on Amazon |
| 5 |  5. Wuldnmar G47Lightweight Group 47 | 6.9"D x 9.6"W x 7.76"H | 11 lb | 12.8 V | View on Amazon |
| 6 |  6. ECIENWELL 40AhLong Reserve Capacity | — | — | — | View on Amazon |
| 7 |  7. Mighty Max MM-H6LIGroup 48 extended reserve | 10.75"D x 7"W x 7.5"H | — | 12.8 V | View on Amazon |
| 8 |  8. LIPOWER Group 48Group 48 cold-weather starter | 10.9"D x 7.44"W x 6.88"H | 17.6 lb | 12 V DC | View on Amazon |
| 9 |  9. TPE Group 26Group 26 lightweight replacement | 6.88"D x 8.14"W x 7.5"H | 8.8 lb | 12.8 V | View on Amazon |
| 10 |  10. Phnixino Group 26Group 26 display controls | — | — | — | View on Amazon |
Detailed Reviews: Best Lithium Ion Car Battery
#1 · Best Overall
1. Mighty Max MM-H5LI
- Dimensions: 9.5"D x 7"W x 7.5"H
- Weight: 11.8 lb
- Voltage: 12.8 V
Best for: Start-stop reserve capacity.
Why it ranks #1: Group 47 fit, 700 CCA, 27Ah capacity, 62-minute reserve capacity, and a built-in BMS make its listed starting specifications especially complete.
A 62-minute reserve capacity distinguishes the Mighty Max MM-H5LI, giving buyers a stated measure of supported operation beyond its 700 CCA starting rating. Its 27Ah, 12.8V LiFePO4 chemistry and Group 47 size target a modern start-stop replacement where those specifications match the vehicle.
The 700 CCA rating addresses engine starting, while the 62-minute reserve capacity gives buyers a separate figure for continued operation when the engine is not running. Its 27Ah capacity and 12.8V output add useful electrical context for evaluating the replacement. Mighty Max identifies it as start-stop ready, with consistent power for frequent restarts. The 9.5-by-7-by-7.5-inch case and Group 47 designation help owners compare fit before installation; its listed weight is 11.8 pounds.
- 700 CCA starting rating
- 62-minute reserve capacity
- 27Ah capacity at 12.8V
- Group 47 size and start-stop compatibility
- The listed warranty is one year.
Skip it if you need Group 48 dimensions and 900 CCA; the Mighty Max MM-H6LI Group 48 lists that higher cranking figure.
Choose this for a compatible Group 47 start-stop vehicle when both cranking output and a stated reserve-capacity figure matter. Its case dimensions and Group 47 designation remain essential fit checks before replacing the existing battery.
Full product details
| Brand | Mighty Max Battery |
|---|---|
| Battery Capacity | 27 amp_hours |
| Compatible with Vehicle Type | ATV |
| Included Components | Battery |
| Dimensions | 9.5"D x 7"W x 7.5"H |
| Item Weight | 11.8 pounds |
| Manufacturer | Mighty Max Battery |
| Part Number | MM-H5LI |
| Manufacturer Warranty Description | 1 Year Manufacturers Warranty |
| Model Number | MM-H5LI |
| Size | Standard |
| Voltage | 12.8 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: Mighty Max Battery MM-H5LI Lithium Car Battery LiFePO4 12.8V Automotive Start-Stop Compatible Replacement 700CCA 62 RC 27Ah Group 47 Built-in BMS, Lightweight, Long Cycle Life
View on Amazon#2 · High Cranking Output
2. OMUGO Group 47
- Dimensions: 6.9"D x 9.6"W x 7.76"H
- Weight: 11 lb
- Voltage: 12.8 V
Best for: Group 47 cold-start focus.
Why it ranks #2: This Group 47 battery lists 800 CCA, 23Ah capacity, and 12.8V, with dimensions matching the listed H5 form factor.
The OMUGO Group 47 battery lists 800 CCA and claims cold-weather starting at −30°C, making low-temperature cranking its defining use case. Its 12.8V LiFePO4 chemistry, 23Ah capacity, and H5 dimensions give buyers several concrete specifications to compare for a start-stop replacement.
The 800 CCA figure and stated −30°C starting claim address cold-weather cranking, while the 23Ah capacity gives a separate measure for comparing battery capacity. Its 12.8V LiFePO4 chemistry and start-stop designation identify the intended battery type and vehicle use. The 6.9-by-9.6-by-7.76-inch dimensions correspond to the listed Group 47/H5 class, helping owners compare fit before installation. The product information also lists an 11-pound weight, a practical consideration when handling the battery.
- 800 CCA rating
- Listed cold starting at −30°C
- 23Ah capacity at 12.8V
- Group 47 / H5 dimensions
- The listed capacity is 23Ah.
Skip it if you need higher listed capacity and reserve time; the Mighty Max MM-H5LI provides 27Ah and a 62-minute reserve capacity.
This suits a Group 47/H5 buyer prioritizing the stated 800 CCA and cold-weather starting claim for a start-stop vehicle. Compare the 23Ah capacity and case dimensions with the replacement requirements before choosing.
Full product details
| Brand | OMUGO |
|---|---|
| Battery Capacity | 23 amp_hours |
| Compatible with Vehicle Type | Passenger Car |
| Included Components | Battery |
| Dimensions | 6.9"D x 9.6"W x 7.76"H |
| Item Weight | 11 pounds |
| Manufacturer | OMUGO |
| Part Number | 1 |
| Manufacturer Warranty Description | 1 Year |
| Model Number | G47 |
| Voltage | 12.8 volts |
Listed on Amazon as: Group 47 H5 12V LiFePO4 Car Battery, 800CCA Start-Stop, Lightweight
View on Amazon#3
3. Forgetyo Group 47
- Dimensions: 9.4"D x 6.9"W x 7.5"H
- Weight: 12.8 lb
Best for: High-CCA Group 47 option.
Why it ranks #3: Its Group 47/H5 designation and 800 CCA suit buyers prioritizing cranking output, though the supplied listing provides fewer specifications than higher-ranked choices.
The Forgetyo Group 47 lithium starting battery lists 800 CCA, making cranking output its clearest differentiator for a compatible H5 start-stop vehicle. Its 12V designation and 9.4-by-6.9-by-7.5-inch dimensions give shoppers practical reference points when comparing it with the battery currently installed.
The Group 47 / H5 label identifies the battery's size class, while the listed dimensions let an owner compare its footprint with the existing unit before installation. Its 800 CCA rating is the strongest named electrical specification in the supplied information and indicates its intended cranking role. The product is described as a 12V lithium starting battery for car start-stop use. At 12.8 pounds, it is also a manageable listed weight for handling during a battery change.
- Group 47 / H5 designation
- 800 CCA listed
- 12V lithium starting battery
- Dimensions listed as 9.4 × 6.9 × 7.5 inches
- The supplied specifications do not state battery capacity or reserve capacity.
Skip it if you need a stated amp-hour or reserve-capacity figure; the Mighty Max MM-H5LI lists 27Ah and 62 minutes of reserve capacity.
This suits a buyer comparing Group 47/H5 lithium starters for a start-stop car who prioritizes the listed 800 CCA. Check the case measurements against the current battery, since this listing gives specific dimensions to match.
Full product details
| Brand | Forgetyo |
|---|---|
| Dimensions | 9.4"D x 6.9"W x 7.5"H |
| Item Weight | 12.8 pounds |
| Manufacturer | Forgetyo |
| Part Number | GROUP47(H5) |
| Manufacturer Warranty Description | 38 Months Warranty |
Listed on Amazon as: Lithium Car Cranking Battery, GROUP 47 12V Lithium Starting Battery with 800CCA LiFePO4 Automotive Batteries Size H5 For Car Start-Stop High Performance
View on Amazon#4 · Display and Start Button
4. SDULIBITIY Group 47
- Weight: 6.21 kg
- Voltage: 12.8 V
Best for: Group 47 button controls.
Why it ranks #4: This Group 47, 12.8V battery lists 600 CCA and includes a battery charge display and emergency start button.
A battery display and emergency start button distinguish the SDULIBITIY Group 47 battery from a basic starter listing. Its 12.8V LiFePO4 design is rated at 600 CCA, and the stated H5 dimensions and left-negative, right-positive layout give buyers practical details for checking replacement fit.
The 9.6-by-6.9-by-7.75-inch case and Group 47 designation let an owner compare the battery with the existing H5 unit before installation. The 600 CCA rating identifies its stated cranking output, while the battery display button and emergency start button add listed controls for use. Its 12.8V output and passenger-car compatibility describe the intended application. Charging must take place between 0°C and 40°C, and the supplied safety guidance prohibits charging at home or unattended.
- Group 47 / H5 size designation
- 600 CCA rating at 12.8V
- Battery charge display
- Emergency start button
- Charging must be attended and within 0°C to 40°C.
Skip it if you need Group 26 dimensions; the Phnixino Group 26 also lists a display button and start button.
This suits a Group 47/H5 passenger-car owner seeking display and emergency-start controls with a stated 600 CCA. Check dimensions and polarity, and ensure charging can be attended within its specified temperature range.
Full product details
| Brand | SDULIBITIY |
|---|---|
| Compatible with Vehicle Type | Passenger Car |
| Included Components | battery |
| Item Weight | 6.21 kg |
| Manufacturer | SDULIBITIY |
| Part Number | Group 47 Button |
| Manufacturer Warranty Description | 36 |
| Model Number | G47 |
| Size | Group 47 Button |
| Voltage | 12.8 volts |
Listed on Amazon as: LiFePO4 Lithium Car Battery Group 47 H5 12.8V 600CCA, Start-Stop Compatible Automotive Starter Battery – Lightweight, with Battery Charge Display and Emergency Start Button
View on Amazon#5 · Lightweight Group 47
5. Wuldnmar G47
- Dimensions: 6.9"D x 9.6"W x 7.76"H
- Weight: 11 lb
- Voltage: 12.8 V
Best for: Lightweight Group 47 starter.
Why it ranks #5: The Group 47 battery lists 600 CCA, 12.8V, and an 11-pound weight, with stated dimensions and polarity to help assess fit.
At 11.02 pounds, the Wuldnmar Group 47 LiFePO4 battery offers a notably light option for a passenger car requiring H5 dimensions. Its 600 CCA rating, tested up to 850 CCA, supports the starting role, while the 12.8V design serves compatible 12-volt automotive systems.
The 9.60-by-6.92-by-7.75-inch case and Group 47 designation give buyers concrete measurements to compare with an existing H5 battery before installation. Its 11.02-pound weight can make handling during a replacement less demanding than a heavier battery. The listed 600 CCA is the stated cranking figure, with testing up to 850 CCA also noted. Charging requires a specially equipped or recognized charger, so existing charging equipment should be checked before the battery enters service.
- Group 47 / H5 size designation
- 12.8V LiFePO4 chemistry
- 600 CCA, tested up to 850 CCA
- 11.02-pound listed weight
- Requires a specially equipped or recognized charger.
Skip it if you need a battery outside Group 47 dimensions or lack a recognized charger; the TPE Group 26 is for a different size class.
A buyer replacing a Group 47/H5 passenger-car battery may value the low listed weight and stated cranking output. Compare the case dimensions and terminal orientation, and plan to use an approved charger for charging.
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 Amazon#6 · Long Reserve Capacity
6. ECIENWELL 40Ah
Best for: Compact-car start-stop battery.
Why it ranks #6: Its stated 40Ah and 100-minute reserve capacity stand out, while the listing says it suits vehicles with engine displacement below 2.0L.
The ECIENWELL battery is specified for vehicles with engine displacement below 2.0L, a useful boundary for buyers narrowing a start-stop replacement. Its 12V, 40Ah LiFePO4 design pairs 660 CCA with a 100-minute reserve capacity, while IP66 waterproofing is another clearly stated feature.
The 40Ah capacity and 100-minute reserve capacity provide two figures for assessing stored energy and supported operation, alongside the 660 CCA cranking rating. ECIENWELL lists the battery for engines below 2.0L, so that limitation should guide vehicle selection rather than assuming broad engine compatibility. Its 9.5-by-6.9-by-8-inch dimensions and 14.8-pound weight help with fit checks and handling. The manufacturer recommends fully charging it before first use to support battery service life.
- 40Ah capacity
- 660 CCA and 100-minute reserve capacity
- IP66 waterproof rating
- Specified for engines below 2.0L
- The stated engine-displacement suitability is limited to below 2.0L.
Skip it if you have an engine of 2.0L or larger; the LIPOWER Group 48 is listed for passenger cars, start-stop vehicles, and trucks.
This is a candidate for a compatible car under 2.0L when 40Ah capacity, reserve capacity, and IP66 protection matter. Check its dimensions and vehicle requirements, and fully charge the battery before first use as advised.
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 Amazon#7
7. Mighty Max MM-H6LI
- Dimensions: 10.75"D x 7"W x 7.5"H
- Voltage: 12.8 V
Best for: Group 48 extended reserve.
Why it ranks #7: This Group 48 battery lists 54Ah, 900 CCA, and 123-minute reserve capacity, but its stated vehicle compatibility is less clearly aligned with passenger cars.
A 123-minute reserve capacity gives the Mighty Max MM-H6LI a clear appeal for buyers weighing continued operation alongside starting output. This Group 48 lithium battery pairs 900 CCA with 54Ah at 12.8V, and its start-stop-ready description targets vehicles with frequent engine restarts.
The 900 CCA rating addresses starting, while the 123-minute reserve capacity supplies a separate measure of supported operation; the 54Ah capacity adds another useful comparison point. Mighty Max describes the battery as suitable for modern start-stop systems, where frequent engine restarts are part of the operating pattern. Its 10.75-by-7-by-7.5-inch dimensions and Group 48 size help buyers assess fit before installation. The supplied title also identifies compatibility with Mercedes-Benz 450SEL models from 1977–1979.
- 900 CCA rating
- 123-minute reserve capacity
- 54Ah capacity at 12.8V
- Group 48 and start-stop-ready description
- The listed warranty is one year.
Skip it if you need Group 47 / H5 dimensions; the Mighty Max MM-H5LI is the Group 47 option with 700 CCA.
This is suited to a Group 48 buyer who values 900 CCA and a substantial stated reserve-capacity figure, including the specified Mercedes-Benz application. Compare its dimensions with the vehicle's existing battery before installation.
Full product details
| Brand | Mighty Max Battery |
|---|---|
| Battery Capacity | 54 amp_hours |
| Compatible with Vehicle Type | ATV |
| Included Components | Battery |
| Dimensions | 10.75"D x 7"W x 7.5"H |
| Manufacturer | Mighty Max Battery |
| Part Number | MM-H6LI-202 |
| Manufacturer Warranty Description | 1 Year Manufacturers Warranty |
| Model Number | MM-H6LI-202 |
| Size | Standard |
| Voltage | 12.8 volts |
Listed on Amazon as: Mighty Max Battery MM-H6LI Group Size 48 12.8V, 54Ah, 123RC, Lithium, 900 CCA, Replacement Battery Compatible with Mercedes-Benz 450SEL 77-79
View on Amazon#8
8. LIPOWER Group 48
- Dimensions: 10.9"D x 7.44"W x 6.88"H
- Weight: 17.6 lb
- Voltage: 12 V DC
Best for: Group 48 cold-weather starter.
Why it ranks #8: Its Group 48 listing gives 1,200 CCA and 60Ah, but the manufacturer specifies a Flooded Lead-Acid BMS setting rather than AGM.
The LIPOWER Group 48 battery lists 1,200 CCA, a prominent specification for buyers focused on cold-weather starting. Its 60Ah capacity, 12V solid-state design, and compatibility listing for passenger cars, start-stop vehicles, and trucks give it a broader stated vehicle range than a Group 47-focused starter.
Its Group 48 / H6 / L3 size designation and 10.9-by-7.44-by-6.88-inch dimensions help buyers compare the case with the existing battery. The 1,200 CCA rating is paired with 60Ah capacity, giving separate starting and capacity figures to assess. For Ford or GM BMS settings, the supplied guidance says to select Flooded Lead-Acid rather than AGM and keep the CCA setting above 760. That setup detail is important to installation and vehicle configuration.
- 1,200 CCA rating
- 60Ah capacity at 12V
- Group 48 / H6 / L3 designation
- Listed for passenger cars, start-stop vehicles, and trucks
- Ford and GM BMS guidance specifies Flooded Lead-Acid, not AGM.
Skip it if you need Group 47 / H5 dimensions; the OMUGO Group 47 is a more suitable size-class candidate.
This fits buyers seeking a high-CCA Group 48 battery for a listed passenger car, truck, or start-stop vehicle. Ford and GM owners should account for the supplied Flooded Lead-Acid BMS setting guidance rather than AGM.
Full product details
| Brand | LIPOWER |
|---|---|
| Battery Capacity | 60 amp_hours |
| Compatible with Vehicle Type | Passenger Car, Start-Stop System Vehicles, Truck |
| Included Components | Battery |
| Dimensions | 10.9"D x 7.44"W x 6.88"H |
| Item Weight | 17.6 pounds |
| Manufacturer | Lipower New EnergyTechnology Co., Ltd |
| Part Number | CB1260EU |
| Manufacturer Warranty Description | 5 Years Warranty, 5-Year Extended Warranty(exclusive to solid-state battery) |
| Model Number | CB1260EU-Group48 |
| Size | Group 48/H6/L3/66L3 |
| Voltage | 12 volts_of_direct_current |
Listed on Amazon as: Lipower Group 48 Car Battery, Solid State Start-Stop Battery
View on Amazon#9
9. TPE Group 26
- Dimensions: 6.88"D x 8.14"W x 7.5"H
- Weight: 8.8 lb
- Voltage: 12.8 V
Best for: Group 26 lightweight replacement.
Why it ranks #9: The Group 26 option lists 600A and 12.8V; its 8.8-pound specification is the lowest supplied, but fit is limited to Group 26 requirements.
At a listed 8.8 pounds, the TPE Group 26 LiFePO4 battery emphasizes low weight for a compatible passenger-car replacement. Its 12.8V output and 600A cranking figure serve the starting role, while the case dimensions and left-negative, right-positive layout give buyers concrete fit details.
The 8.14-by-6.88-by-7.5-inch dimensions and BCI Group 26 designation help an owner compare the battery with the old unit before installation. TPE lists left-negative, right-positive polarity, a detail that matters when matching terminal orientation. Its 600A cranking rating and 12.8V voltage describe the intended starting application, while the 8.8-pound listed weight can ease handling. Charging must use a specially equipped or recognized charger, so charger choice is part of the ownership workflow.
- BCI Group 26 designation
- 600A cranking rating at 12.8V
- 8.8-pound listed weight
- Left-negative, right-positive terminal layout
- Charging requires a specially equipped or recognized charger.
Skip it if you need Group 47 / H5 sizing; the SDULIBITIY Group 47 includes a battery display and emergency start button.
A buyer replacing a matching Group 26 passenger-car battery may appreciate the low listed weight and clearly stated polarity. Confirm the case dimensions and use a recognized charger, since both affect fit and charging workflow.
Full product details
| Brand | TPE |
|---|---|
| Compatible with Vehicle Type | Passenger Car |
| Included Components | Battery |
| Dimensions | 6.88"D x 8.14"W x 7.5"H |
| Item Weight | 8.8 pounds |
| Manufacturer | TPE |
| Part Number | 1 |
| Manufacturer Warranty Description | 1 Years |
| Model Number | G26 |
| Voltage | 12.8 volts |
Listed on Amazon as: TPE Car Start Stop System BCI Group26 LiFePO4 Lithium-ion Battery 12.8V 600A Lightweight High Performance Battery Level Display Left Negative Right Positive
View on Amazon#10
10. Phnixino Group 26
Best for: Group 26 display controls.
Why it ranks #10: It lists Group 26 dimensions, 600 CCA, and a 60-month warranty, but the smaller group limits suitability to vehicles requiring that size.
The Phnixino Group 26 battery adds a battery display button and start button, giving the owner listed controls beyond its 600 CCA starting function. Its LiFePO4 chemistry, stated dimensions, and left-negative, right-positive terminal layout make it a defined fit candidate for compatible passenger cars.
The 8.14-by-6.88-by-7.08-inch case and Group 26 designation support a direct size comparison with the existing battery before installation. Its 600 CCA rating identifies the starting output, while the display button offers a listed way to check battery information and the start button provides an additional control. Phnixino says charging should not take place at home or unattended, and specifies a 0–40°C charging range, shaping where and when charging can happen.
- Group 26 size designation
- 600 CCA rating
- Battery display button and start button
- Left-negative, right-positive terminal layout
- Charging is prohibited at home or in unattended locations.
Skip it if you need Group 47 / H5 sizing; the SDULIBITIY Group 47 offers the same listed display and emergency-start controls in that size class.
This suits a Group 26 buyer who values the listed display and start buttons alongside 600 CCA. Match the case and polarity, and plan charging in an attended location within the stated temperature range.
Full product details
| Brand | Phnixino |
|---|---|
| Compatible with Vehicle Type | Passenger Car |
| Included Components | battery |
| Manufacturer | Phnixino |
| Part Number | PX-G26 |
| Manufacturer Warranty Description | 60 month |
| Model Number | PX-G26 |
| Size | Group 26 |
Listed on Amazon as: Lithium Car Battery 12V Group 26 Start and Stop, 600CCA LiFePO4 Automotive Battery For Car, Dimensions 8.14" L x 6.88" W x 7.08" H
View on AmazonWhy charging compatibility matters with lithium starters
Charging compatibility can be a make-or-break issue when replacing a lead-acid battery with a lithium starting battery. The LIPOWER Group 48 listing specifically says Ford and GM BMS settings should be set to Flooded Lead-Acid, not AGM, and advises a CCA setting above That instruction is specific to that product; do not assume it applies to every battery here.
Wuldnmar and TPE also warn that using an unrecognized charger may shorten battery life or cause battery failure. Their guidance recommends charging in a ventilated, stable, dry, open area away from flammable materials.
Before buying, check the vehicle maker’s battery-management and charging requirements, then follow the battery maker’s instructions. A battery that physically fits may still be a poor replacement if its charging needs or vehicle settings are incompatible.
How to Choose a Lithium Car Battery
BCI group, dimensions, and polarity
Look first for the BCI group, physical dimensions, and terminal orientation specified for your vehicle. The listings cover Group 26 batteries around 8.14 × 6.88 inches and Group 47 batteries around 9.4–9.6 × 6.9 inches; the LIPOWER Group 48 measures 10.9 × 7.44 × 6.88 inches. Wuldnmar and several other listings specify left-negative, right-positive polarity, but verify yours rather than assuming.
Group 26 buyers should focus on TPE Group 26 or Phnixino Group 26; a vehicle requiring Group 47 should consider the Group 47 options. The longer Group 48 batteries suit only vehicles that call for that larger size.
Measure the existing battery and compare terminal layout before ordering.
Cold-cranking amps and reserve capacity
Choose a CCA rating that meets or exceeds your vehicle’s requirement, and consider reserve capacity when you need power for longer periods with the engine off. Listed ratings range from 600 CCA on Wuldnmar G47, TPE Group 26, and Phnixino Group 26 to 1,200 CCA on LIPOWER Group Mighty Max MM-H5LI pairs 700 CCA with a 62-minute reserve, while Mighty Max MM-H6LI lists 900 CCA and 123 minutes.
LIPOWER Group 48 lists 1,200 CCA and 60Ah, but also has a specific BMS setting instruction to check. Buyers prioritizing a Group 47 with higher listed cranking output can compare OMUGO Group 47 and Forgetyo Group 47 at 800 CCA; follow the vehicle’s actual specification, not just the highest number.
Capacity, weight, and stated fit limits
Compare capacity and weight alongside any explicit engine-size or vehicle-fit limits in the listing. Mighty Max MM-H5LI lists 27Ah and weighs 11.8 pounds, while Mighty Max MM-H6LI lists 54Ah; ECIENWELL 40Ah lists 100-minute reserve capacity and says it is suitable for engines below 2.0L. Listed weights vary from 8.8 pounds for TPE Group 26 to 17.6 pounds for LIPOWER Group 48 among products with weight data.
Lighter batteries may appeal when reducing installed weight matters, but that does not establish compatibility or performance by itself. Choose ECIENWELL only if its stated engine limit fits your situation; for other options, check the vehicle’s required capacity and fit rather than treating Ah or weight as a substitute.
Which Lithium Car Battery Should You Choose?
For a Group 47 replacement with a balanced set of stated starting specifications, choose Mighty Max MM-H5LI: it lists 700 CCA, 27Ah, and 62 minutes of reserve capacity. If your vehicle calls for Group 47 and requires higher listed cranking output, compare OMUGO Group 47 or Forgetyo Group 47, both listed at 800 CCA. Buyers who need Group 26 should look at TPE Group 26 or Phnixino Group 26, after confirming dimensions and polarity.
For a vehicle requiring Group 48 and more capacity, Mighty Max MM-H6LI lists 54Ah and 900 CCA; LIPOWER Group 48 lists 60Ah and 1,200 CCA but requires careful attention to its BMS guidance. Verify the vehicle’s battery requirements and charging compatibility before choosing any of these options.
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Frequently Asked Questions
Can I replace my lead-acid battery with a lithium car battery without changing the charging system?
Not necessarily; check your vehicle and battery manufacturers’ compatibility guidance before replacing a lead-acid battery. Confirm that the charging system and any battery-management-system requirements are suitable for the lithium battery. If guidance is unclear, ask a qualified automotive technician to check compatibility rather than assuming a direct replacement will work.
How do I confirm the BCI group size, terminal orientation, and dimensions my vehicle needs?
Check your owner’s manual or the vehicle’s existing battery for the required group size, terminal orientation, and dimensions, then compare each with the replacement’s specifications. Do not rely on group number alone: the listed MM-H5LI dimensions, for example, are 9.5 × 7 × 7.5 inches, but you must verify fit and polarity for your vehicle.
What should I do if a lithium car battery will not crank in cold weather?
First, follow the battery maker’s cold-weather and BMS instructions; do not repeatedly attempt to crank if the battery will not start the vehicle. Check that terminals are secure and the battery is charged as directed. If it still will not crank, consult the battery or vehicle manufacturer before attempting a boost or other recovery method.
What does a battery’s built-in BMS mean for installation and use?
A built-in battery management system, or BMS, makes following the battery maker’s installation, charging, and operating guidance essential. BMS features and requirements can differ, so confirm compatibility with your vehicle and charging system before purchase. The listed LIPOWER Group 48 option specifically calls for careful attention to its BMS guidance.
Which listed battery should I compare if my vehicle requires Group 26 or Group 48?
For Group 26, compare the TPE Group 26 and Phnixino Group 26 options; for Group 48, compare the Mighty Max MM-H6LI and LIPOWER Group Check dimensions, terminal orientation, and vehicle requirements before choosing. The Group 48 listings differ in stated capacity and cranking output, so compare those figures against your needs.
Final Words
Start with your vehicle’s required group size, dimensions, terminal orientation, and charging compatibility; these matter more than a shared group number alone. For Group 47, the Mighty Max MM-H5LI is the overall pick, while OMUGO and Forgetyo list higher CCA. For Group 26, compare TPE and Phnixino.
For Group 48, compare the listed Mighty Max and LIPOWER specifications, following BMS guidance carefully.
