Product Description
VMAX LFP22-1255 12V lithium batteries consist of high quality cells, components and a custom designed BMS giving them many advantages including:
- High performance long life, safe and wide temperature range LFP single cells.
- High energy density, small size, light weight, no pollution.
- High efficiency, fast charging.
- Built-in BMS offering voltage, current and temperature protection.
- Standard battery case for an easy VRLA battery replacement.
- 10 years design life, stable performance & maintenance-free.
- Folding carrying handles.
Recommended uses:
- Trolling Motors, Solar Power Backup, UPS, Portable Devices, Medical Cart Applications, Camping, Trailers, Boats, and most deep cycle applications.
- Audio: 850Wrms, 2100Wpeak.
- NOT for engine start applications.
- Parallel wiring is acceptable for up to FOUR batteries.
- Series wiring is acceptable for up to FOUR batteries.
BCI Group: 22* (+ on L.H.S. & - on R.H.S)
* Matching is based on closest dimensional specifications
Recommended Charging Options:
- Use a VMAX LiFePO4 charger or a LiFePO4 smart & microprocessor controlled charger with the recommended specs listed.
- <15V alternator if used in vehicle or marine application.
- Compatible lithium charge controller if used in solar applications.
- Charge at max charging current only in situations when fastest charging rate is needed. Not recommended on an ongoing basis.
Charging time for a fully discharged 55Ah battery
10 amps = 5.5 hours
15 amps = 3.7 hours
20 amps = 2.75 hours
Nominal Voltage | 12.8V (3.2V/cell) |
Rated Capacity | 55Ah |
Rated Energy | 704Wh |
Output Voltage Range |
10.0V - 14.6V |
Charging Voltage | 14.4V - 14.6V |
Cut-Off Voltage | 10.0V |
Max. Constant Charging Current |
50A |
Recommended Charging Current |
10A - 25A |
Max. Constant Discharge Current |
55Ah |
Max. 3 sec Discharge Current |
100A |
Charging Temperature |
32°F - 113°F |
Discharging Temperature |
-4°F - 150°F |
Storage Temperature |
-4°F - 113°F |
Efficiency | >98% |
Built-in BMS | Yes |
Over-Charge Voltage Protection |
>14.8V, Cell: >3.8V |
Over-Discharge Voltage Protection |
<10.0V, Cell: <2.0V |
Over-Charge Current Protection |
>57A w/15sec Delay >80A w/ 3sec Delay |
Over-Discharge Current Protection |
>57A w/ 15sec Delay >110A w/ 3sec Delay |
Short-Circuit Protection | >400A |
Cell Balance Passive | 150mA |
Over-Temperature Protection (Charging) |
<23°F or >150°F |
Over-Temperature Protection (Discharging) |
<-4°F or >150°F |
Cycle Life @ 80% DOD |
~6000@9A(77°F) |
Cycle Life @ 90% DOD |
~4000@10A(77°F) |
Design Life | ~10 Years |
Battery Case Material | ABS |
Dimensions (L x W X H) |
9" x 5.5" x 8.2" |
Terminals | M8 Screw In |
Weight | 15.5 lbs |