Description
12V EVE MB31 314Ah LiFePO4 4.02 kWh Battery Pack Kit with Smart BMS
5 Year Warranty on Cells
3 Year Warranty on BMS
This Battery Pack is a 12 Volt (12.8V nominal) EVE 314 Ah – 4.02 (kWh)
Compared to Lead Acid, this pack is about 600ah of Lead Acid, if you are using the usual 50% SOC Lead Depth of Discharge
This is a kit made up of:
- 4 x 3.2v LiFePO4 EVE MB31 314ah cells (Brand New Auto Grade)
- 1 x 300 Amp 4S JK Smart BMS with Bluetooth and CAN/RS485 Ports
- Smart BMS features 2A of balance current, this BMS makes setup a breeze
- 4 x Double Pole Busbars to suit the Double Pole Terminal
What you can do with this 12.8v 314ah Battery Pack
Charge and Discharge up to ~157A safely
Charge or Discharge over 157A with advanced speed of degredation – (warranty voided)
Shorter Lifespan – Run 3000-4000W Inverter/Charger (you are exceeding the rated current, and this may reduce lifespan significantly and cause localised internal heating)
6-10+ years Lifespan – Run ~2000W Inverter/Charger (you are within the recommended current)
If you need to run 3000-4000W Inverter chargers and run at least 2 of these in parallel
Warranty on Cells
Lithium battery cells with suffer irreversable damage additional to normal degredation if allowed to
- Go under 2.5v
- Over 3.65v
- Charge when cold – Approx 2°C
- Charge or Discharge when very cold and very hot
- Exceed Current stated on Datasheet, for example 314Ah states 0.5P which is approx 157 Amps
| Parameter | Absolute Limit | Recommended BMS Setting |
| High Voltage Disconnect | 3.65V | 3.60V |
| Low Voltage Disconnect | 2.50V | 2.80V – 3.00V |
| Low Temp Charge Cut-off | 2°C | 5°C |
| High Temp Charge Cut-off | 55°C | 45°C |
| High Temp Discharge Cut-off | 65°C | 55°C |
DIY battery warranty is dependant on these being provable, which is in most cases impossible, we cannot know what you do with your cells and after 6 years of supporting DIY users, we have no warranty claims, from users who have followed these rules. We have no warranty claims because the cells we supply at genuine Grade A, and we always make sure to check our supply before selling them.
What does this mean to you?
You can safely purchase the battery cells we recommend, they have a long lifespan when the correct settings and BMS are used to protect the battery cells.
