Li-ion and LiFePO4 batteries require different charging profiles. Using the wrong charger can reduce battery life or cause safety issues.
Cell Voltage Differences
| Chemistry | Nominal/Cell | Full Charge/Cell | 12V Pack Charge V | 48V Pack Charge V |
|---|---|---|---|---|
| Li-ion (NMC) | 3.6V | 4.2V | 12.6V | 54.6V |
| LiFePO4 | 3.2V | 3.65V | 14.6V | 56.0V |
Why You Can't Mix Them
A Li-ion charger set to 4.2V/cell will overcharge a LiFePO4 battery (max 3.65V/cell). Conversely, a LiFePO4 charger at 3.65V/cell won't fully charge a Li-ion battery.
How to Identify Your Battery Type
- Check the battery label for "Li-ion" or "LiFePO4" or "LFP"
- LiFePO4 packs often have a BMS with balance leads for each cell
- If nominal voltage is 3.2V/cell, it's LiFePO4
- If nominal voltage is 3.6V/cell, it's standard Li-ion
Our Chargers Support Both
Juxon chargers can be configured for either Li-ion or LiFePO4 charging profiles. Just confirm your battery chemistry when ordering. Contact us to configure the right charger.