Size your lithium iron phosphate battery bank for off-grid solar. Enter your energy needs and system voltage to get the exact configuration.
LiFePO4: 3.2V/cell nominal, 3.65V full, 2.5V cutoff, 85% usable DoD, 3,000–5,000 cycle life.
| Feature | LiFePO4 | Li-Ion (18650) | AGM Lead-Acid |
|---|---|---|---|
| Usable DoD | 85–100% | 80% | 50% |
| Cycle Life | 3,000–5,000 | 500–1,000 | 300–500 |
| Thermal Stability | Excellent | Moderate | Good |
| Weight (per kWh) | ~13 kg | ~7 kg | ~33 kg |
| Cost per cycle | Lowest | Medium | Highest |
| Fire Risk | Very Low | Higher | Low (but acid) |