8 Volt Lithium Golf Cart Batteries
Lead-acid and lithium batteries are both made in BCI Groups GC2/GC2H (6 Volt) and GC12 (12 Volt) sizes, but what about BCI Group GC8/GC8H (8 Volt) batteries?
Are there 8 Volt lithium golf cart batteries?
Here is our attempt to answer this question and to clarify few things about not only lithium golf cart batteries, but about lithium batteries in general.
Electric Vehicles Battery Group Sizes
Most popular battery groups used for propulsion of electric vehicles, including golf carts are 6 Volt BCI Group GC2/GC2H, 8 Volt BCI Group GC8/GC8H and 12 Volt BCI Group GC12. Their dimensions are as follows:
- 6 Volts Group GC2: 10 3/8 x 7 3/16 x 10 5/8 inches (264 x 183 x 270 mm),
- 6 Volts Group GC2H: 10 3/8 x 7 3/16 x 11 5/8 inches (264 x 183 x 295 mm),
- 8 Volts Group GC8: 10 3/8 x 7 3/16 x 10 7/8 inches (264 x 183 x 277 mm),
- 8 Volts Group GC8H: 10 3/8 x 7 3/16 x 11 5/8 inches (264 x 183 x 295 mm),
- 12 Volts Group GC12: 12 7/8 x 7 3/16 x 10 7/8 inches (327 x 183 x 277 mm).
Of course, other battery sizes are used as well.
As one can see, nominal voltages of these batteries are based on the nominal voltage of a single lead-acid battery cell - 2 Volts.
So, the number of lead-acid cells are:
- 6 Volts Group GC2/GC2H: 3 cells,
- 8 Volts Group GC8: 4 cells,
- 12 Volts Group GC12: 6 cells.
Lithium Batteries Chemistries
Lithium batteries feature several different chemistries, often "hidden" behind abbreviations like IMR, INR, IFR, ICR...
These abbreviations describe actual battery chemistry:
- IMR lithium batteries feature LiMn204 (Lithium Manganese Oxide) chemistry. Their nominal voltage is 3.6 - 3.7 V per cell, with a maximum recommended charging voltage of 4.2 V. IMR batteries commonly have a smaller capacity but are capable of delivering larger currents.
- INR lithium batteries feature LiNiMnCoO2 (Lithium Manganese Nickel) chemistry. These batteries are very similar to IMR batteries since they can provide plenty of currents, with slightly lower capacity.
- IFR lithium batteries feature LiFePO4 (Lithium Iron Phosphate) chemistry. Their nominal voltage is 3.2 - 3.3 V per cell, with the maximum recommended charging voltage of 3.5 - 3.6 V.
- ICR lithium batteries feature LiCoO2 (Lithium Cobalt Oxide) chemistry. Their nominal voltage is 3.6 - 3.7 V per cell, with the maximum recommended charging voltage of 4.2 V. They commonly have higher capacities, but maximum allowed currents are often limited to just a few C.
Note: there are other chemistries on the market too, including hybrid technologies like Lithium Nickel Cobalt Oxide (LiNiCoO2), Lithium Nickel Cobalt Aluminum Oxide (LiNiCoAlO2), etc.
Although Lithium Iron Phosphate chemistry (LiFePO4) features somewhat lower voltage (3.2 volts per cell), it is the safest lithium battery chemistry and is used for making high-capacity deep-cycle and even starting lithium batteries, with the built-in Battery Management System (BMS) being mandatory.
With 3.2 volts per cell, LiFePO4 chemistry can be used to make:
- 2 cells: 6.4 volts batteries,
- 3 cells: 9.6 volts batteries,
- 4 cells: 12.8 volts batteries, often labeled as 12 volts batteries,
- 8 cells: 25.6 volts batteries, often labeled as 24 volts batteries,
- 12 cells: 38.4 volts batteries, often labeled as 36 volts batteries,
- 16 cells: 51.2 volts batteries, often labeled as 48 volts batteries, etc.
But, as one can see, there is no option of making 8 volts lithium battery - that would be 2.5 x 3.2V cells and that is not a possible option.
So, are there 8 volts lithium golf cart batteries? No, there are no 8 volts lithium golf cart batteries.
But, since GC2/GC2H batteries are very similar in size to GC8/GC8H batteries, note that there are lithium GC2 batteries, which don't feature 6V but 12V nominal voltages:
|Model||Battery Chemistry||Voltage (V) / Capacity (Ah)||RC (min)
|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.
12V lithium GC2 batteries may be connected in series in order to create battery packs with 24V, 36V, and 48V.
Note: when connecting lithium batteries in series and/or parallel, always connect them as instructed by their manufacturer.