Product Description
LFP1240MH VMAX Lithium Battery
Designed with lithium iron phosphate battery (LiFePO4) technology, this is a battery built to last, year after year.
- High performance long life, safe and wide temperature range LFP single cells.
- High energy density and light weight at only 10 lbs for 40Ah.
- High efficiency, fast charging.
- Built-in BMS offering voltage, current and temperature protection.
- Standard Group U1 battery case for an easy VRLA battery replacement.
- 10 years design life, stable performance & maintenance-free.
Recommended uses:
- Small Trolling motors.
- Solar Power Backup & Energy Storage.
- UPS and medical cart applications.
- Boats, trailers and other demanding deep cycle applications.
- Parallel wiring is acceptable for up to 160Ah of capacity (4 batteries).
- Series wiring is acceptable for 24V, 36V and 48V systems.
- NOT for engine starting applications.
To calculate how long a battery will last when powering your electronics, please reference the Calculating Battery Capacity section of the linked article to ensure you are selecting the right capacity battery for your needs.
BCI Group: U1*
* 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.
- A self heating lithium battery for cold weather charging.
| Voltage | 12.8V (3.2V/cell) |
| Rated Capacity | 40Ah |
| Rated Energy | 512Wh |
| Output Voltage Range |
10.0V - 14.6V |
| Charging Voltage |
14.6V |
| Cut-Off Voltage |
10.0V |
| Max. Constant Charging |
60A |
| Recommended Charging |
5A - 25A |
| Max. Constant Discharge |
60A |
| Max. 3 Sec Discharge |
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 |
| Charge Voltage Protection |
>14.8V Cell: >3.8V |
| Discharge Voltage Protection |
<10.0V Cell: <2.0V |
| Charge Current Protection |
>60A w/15sec Delay >80A w/3sec Delay |
| Discharge Current Protection |
>60A w/15sec Delay >110A w/3sec Delay |
| Short-Circuit Protection |
>150A |
| Cell Balance Passive |
150mA |
| Temperature Protection (Charging) |
<23°F or >150°F |
| Temperature Protection (Discharging) |
<-4°F or >150°F |
| Cycle Life @ 80% DOD |
~6000 @ 8A (77°F) |
| Cycle Life @ 90% DOD |
>4000 @ 8A (77°F) |
| Design Life | ~10 Years |
| Battery Case Material |
ABS |
| Dimensions (L x W X H) |
7.7"x5.25"x6.7" |
| Terminals | M8 Screw In |
| Weight | 10 lbs |
