Battery Equivalents and Replacements

Golf Cart Batteries - Groups/Sizes, Types, and Features

Golf carts and other electric vehicles rely on their built-in batteries to provide them with enough power and energy for propulsion.

In order to increase the range and acceleration of the golf cart, the golf cart battery must be able to both store and to be able to release plenty of energy, often rapidly, while not causing weight penalties. Also, the golf cart battery must be able to cycle a lot, tolerate deep cycle discharges, to accept the charge quickly and similar. These requirements are not easy ones...

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Golf Cart Battery Groups/Sizes

Most popular golf cart BCI battery groups include 6 Volt BCI Group GC2/GC2H, 8 Volt BCI Group GC8/GC8H and 12 Volt BCI Group GC12:

- Group GC2: 10 3/8 x 7 3/16 x 10 5/8 inches (10.375 x 7.1875 x 10.625 inches, 264 x 183 x 270 mm),

- Group GC2H: 10 3/8 x 7 3/16 x 11 5/8 inches (10.375 x 7.1875 x 11.625 inches, 264 x 183 x 295 mm),

- Group GC8: 10 3/8 x 7 3/16 x 10 7/8 inches (10.375 x 7.1875 x 10.625 inches, 264 x 183 x 277 mm),

- Group GC8H: 10 3/8 x 7 3/16 x 11 5/8 inches (10.375 x 7.1875 x 11.625 inches, 264 x 183 x 295 mm),

- Group GC12: 12 7/8 x 7 3/16 x 10 7/8 inches (12.875 x 7.1875 x 10.875 inches, 327 x 183 x 277 mm).

Also, some manufacturers or users use smaller 12V ~35 Ah U1/U1R batteries - they simply fit as many of these batteries as can, and connect them in parallel/series, achieving required voltages/capacities.

Personally, the fewer battery connections, the better - some brands/users use large group 8D, group 4D, or somewhat smaller group 31 batteries in their golf carts.

When replacing the old batteries with the new ones, it is recommended to get the batteries of the same size, chemistry with the same or better discharging features.

If You are going to change the battery size, be sure to measure the battery compartment, length of cables, to check the actual size of the new batteries and similar.

If You are going to change the battery type, chemistry, and size, consider checking and double-checking - everything.

Golf Cart Battery Pack Voltages

The most popular golf cart battery voltages are 36V and 48V, although there are other voltages present as well, but they are not that common.

The following chart lists the number of required batteries in order to achieve desired voltage of the battery pack - connections are in series:

Individual Batteries 36 Volts 48 Volts 72 Volts
6 Volts 6 Batteries 8 Batteries 12 Batteries
8 Volts - 6 Batteries 9 Batteries
12 Volts 3 Batteries 4 Batteries 6 Batteries
24 Volts - 2 Batteries 3 Batteries
36 Volts 1 Battery - 2 Batteries
48 Volts - 1 Battery -

As one can see, in order to make, for example, 48 volts battery pack, one needs eight (8) 6V batteries, six (6) 8V batteries, four (4) 12V batteries, two (2) 24V batteries, or one can simply take one (1) 48V battery.

Golf Cart Battery Types

The most common golf cart battery packs are based on wet/flooded lead-acid batteries, AGM/Gel-Cell lead-acid batteries, and Lithium Iron Phosphate (LiFePO4) batteries.

Regardless of the exact chemistry, golf cart batteries are heavy-duty, deep cycle batteries.

Wet/flooded lead-acid batteries are mostly GC2/GC2H (6V), GC8/GC8H (8V), and GC12 (12V) group batteries. They are not spill-proof, and they are not maintenance-free batteries.

But, they usually cycle a lot and are somewhat cheaper than AGM/Gel-Cell batteries.

Absorbent Glass Mat (AGM) and Gel-Cell lead-acid batteries are Valve Regulated Lead-Acid (VRLA) batteries that are spill-proof and maintenance-free batteries. These batteries recombine 99% (or even more) of created hydrogen and oxygen back into the water, requiring no refilling during their operating life.

Lithium golf cart batteries are based on the Lithium Iron Phosphate (LiFePO4) chemistry with each cell featuring a nominal voltage of 3.2 volts.

Lithium batteries are also spill-proof, maintenance-free batteries.

Golf Cart Battery Features

The most important features of good golf cart batteries are:

- they must be as light as possible: obviously, lead-acid batteries are anything but light, making lightweight lithium batteries a very desirable replacement, at least regarding the weight of the battery pack.

- they must be simple to maintain: wet/flooded lead-acid batteries must have their lost water replaced with new distilled/demineralized water, or they can be destroyed rather quickly. On the other hand, AGM/Gel-Cell and lithium batteries are maintenance-free batteries, with no need of refilling or anything similar.

- they must cycle well: lead-acid batteries are able to withstand on average 700-1200 cycles down to 50% DoD, with some models supporting up to 1600 cycles down to 50% DoD. If the Depth of Discharge (DoD) is increased down to 80-100%, the number of cycles is decreased down to 200-500, depending on the exact battery model, age of the battery, and similar.

On the other hand, lithium batteries are able to withstand 4000-6000 cycles (sometimes even more), when being discharged down to 80-100% DoD.

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- they must accept charge quickly: lead-acid batteries discharged down to 50% DoD can be safely recharged in 4-6 hours, again, depending on the model. Lithium batteries discharged down to 100% can be safely recharged in 2-3 hours, but if required, many models can be recharged in just 1h! 

- capacity drop: when the lead-acid batteries are discharged in 1 (one) hour, their actual capacity drops down to 55-60% of their nominal capacity, with rare lead-acid batteries' 1h actual capacity in the 70+% range. When the lithium batteries are discharged in 1 hour, their capacity loss is just a few %, if any.

- connecting in parallel and series: in order to create larger battery packs (packs with a larger capacity), golf cart batteries sometimes must be connected in parallel. Also, in order to create battery packs with higher voltage, golf cart batteries must be sometimes connected in series. Lead-acid batteries may easily be connected in both parallel and series, while lithium batteries may be connected in parallel and series only if explicitly permitted by their manufacturer.

Note: when connecting batteries in parallel and/or series, be sure to use the very same batteries not only from the same manufacturer but preferably from the same batch.

These are the most basic requirements for golf cart batteries - when getting new ones, be sure to choose according to your own needs and requirements.

The Most Popular GC2 and GC2H Golf Cart Batteries

The following comparison chart lists some of the most popular 6V lead-acid and 12V lithium GC2 and GC2H batteries:

Model Battery Chemistry Voltage (V) / Capacity (Ah) RC (min)
Weight
Amstron GC2 AGM 6V, 210 Ah 475 min @25A; 124 min @75A 68 lbs; 30.8 kg
Battle Born BBGC2 LiFePO4 12V, 100 Ah 240 min @25A 31 lbs; 14.1 kg
Fullriver DC224-6 GC2 AGM 6V, 224 Ah 441 min @25A; 113 min @75A 70 lbs; 31.7 kg
Mighty Max ML200-6 AGM 6V, 200 Ah - 63.5 lbs; 28.8 kg
Trojan T-105 Flooded/Wet 6V, 225 Ah 447 min @25A; 115 min @75A 64 lbs; 29.0 kg
Trojan T-125 Flooded/Wet 6V, 240 Ah 488 min @25A; 132 min @75A 66 lbs; 29.9 kg
Trojan T-145 Flooded/Wet 6V, 260 Ah 530 min @25A; 145 min @75A 72 lbs; 32.6 kg
UPG UBGC2 AGM 6V, 200 Ah - 62.4 lbs; 28.3 kg
U.S. GC2 US2200XC2 Flooded/Wet 6V, 232 Ah 474 min @25A; 122 min @75A 61.8 lbs; 28.0 kg
VMAX LFPGC2-12175XTR LiFePO4 12V, 175 Ah  420 min @25A 38.5 lbs; 17.5 kg
VMAX V6-225 GC-2 AGM 6V, 225 Ah 500 min @25A; 125 min @75A 72 lbs; 32.6 kg
VMAX XTR6-235 GC-2 AGM 6V, 235 Ah 500 min @25A; 130 min @75A 78 lbs; 35.3 kg

Note: Amazon links in the chart ('Model' column) open in the new windows, feel free to check them for the most up-to-date prices and offers.

Lead-acid GC2 batteries feature a nominal voltage of 6 volts and 20h capacity in the 200-260 Ah range. Also, they are able to provide 25 Amps for up to 530 minutes and 75 Amps for up to 145 minutes.

Lithium GC2 batteries are offered as 12V batteries that feature 100-175 Ah capacity, but with new models emerging on the market, one can expect these numbers to change very soon.

The Most Popular GC8 and GC8H Golf Cart Batteries

GC8 and GC8H batteries are almost exclusively 4-cell lead-acid batteries featuring nominal voltage of 8 volts and nominal (20h) capacity in the 165-190 Ah range, with an RC value of 290-320 minutes and weight in the 60-75 pounds (~27 - 34 kg) range.

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Although one needs fewer 8V batteries to make a battery pack of required voltage than 6V batteries, GC8 and GC8H batteries can't be used to make 12V and 36V battery packs.

These and few more reasons make GC8 and GC8H batteries not as nearly popular as GC2 and GC2H batteries.

The Most Popular GC12 Golf Cart Batteries

The following chart lists some of the most popular 12V GC12 lead-acid and 12V GC2 lithium batteries, with their most important features and specifications:

Model Battery Chemistry Capacity (Ah) RC (min)
Weight
Battle Born BBGC2 LiFePO4 100 Ah 240 min @25A 31 lbs; 14.1 kg
Duracell GC12 Flooded 150 Ah 280 min @25A, 70 min @75A 85 lbs; 38.5 kg
Interstate GC12 Flooded 150 Ah 280 min @25A 84.5 lbs; 38.3 kg
Trojan T-1275 Flooded 150 Ah 280 min @25A, 70 min @75A 82 lbs; 37.2 kg
VMAXTANKS LFPGC2-12175XTR LiFePO4 170 Ah 420 min @25A 38.5 lbs; 17.5 kg
VMAXTANKS SLR-155 AGM 155 Ah 350 min @25A, 90 min @75A 90 lbs; 40.8 kg
VMAXTANKS XTR12-155 AGM 155 Ah 350 min @25A, 90 min @75A 91 lbs; 41.2 kg

Note: Amazon links in the chart ('Model' column) open in the new windows, feel free to check them for the most up-to-date prices and offers.

As one can see, lead-acid GC12 batteries feature nominal capacity in 150-155 Ah range, RC value of 280 to 350 minutes and weigh between 80 and 92 pounds.

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Lithium GC12 batteries are very rare, but there are several lithium GC2 12V models, each of which can fit into the GC12 battery compartment.

Most lithium GC2 batteries feature Battery Management Systems (BMS) that allow the user to connect the very same batteries in series in order to achieve higher voltages, like 24V, 36V, and/or 48V.

But, if You are looking for a lithium 48V golf cart battery, the great news is that those batteries are being built and are commonly used in 48V golf carts.

48 Volt Lithium Golf Cart Batteries

The following comparison chart lists some of the most popular 48V lithium golf cart batteries with their most important features and specifications:

Model Capacity Discharge Current Weight
Ampere Time 48V 100Ah Battery 100 Ah 100A Cont., 280A 5s 99.2 lbs; 44.9 kg
Go Battery 48Volt 100Ah Battery 100 Ah 120A Cont., 300A Max. 91 lbs; 41.2 kg
Lynx 48V 100Ah Battery 100 Ah 200A 89 lbs; 40.3 kg
RELiON Insight 30Ah 48V Battery 30 Ah 100A Cont., 200A 15s 34.4 lbs; 15.6 kg
Renogy 48V 50Ah Battery 50 Ah 50A Continuous 60.8 lbs; 27.6 kg
Scream Power 48v 80Ah Battery 80 Ah 80A Continuous 77 lbs; 34.9 kg
Scream Power 48v 100Ah Battery 100 Ah 100A Continuous 94.7 lbs; 42.9 kg

Note: Amazon affiliate links ('Model' column) open in the new windows, feel free to check them for the most up-to-date offers and prices.

One of the main features of the 48V lithium golf cart batteries is that they can be connected in parallel in order to achieve the required capacity and required output power - the maximum number of batteries in parallel depends on the battery model.

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Although lithium golf cart batteries initially cost more than the lead-acid batteries, due to the weight savings, a larger number of supported charging/discharging cycles, faster recharge, generally lower self-discharge rate, and similar, lithium golf cart batteries, in the long run, save both time and money.

Just be sure to connect, charge and use them according to the manufacturers' recommendations.

Amazon Search:

- GC2 Battery

- GC2H Battery

- Golf Cart Battery

Note: Amazon links open in the new windows, feel free to check them for the most up-to-date offers and prices.