Description
40 Ah of LiFePO4 — the entry capacity, and enough for a weekend. 512 Wh at 12.8 V, rated for 2000 cycles. Lithium’s practical advantage over lead-acid is that you can use most of what you paid for: a 40 Ah LiFePO4 delivers more usable energy than a 40 Ah AGM, and it does not mind being cycled.
Key points
- 512 Wh, 2000 cycles — a lead-acid battery of the same rating gives you roughly half the usable capacity, because you should not routinely take it below 50%.
- 50 A maximum discharge — enough for a modest inverter as well as 12 V loads.
- 20 A maximum charge current — size the controller and array accordingly; we will check this pairs correctly with your panel.
- -20 to 60 °C operating range. Note that charging lithium below freezing is what damages it — worth knowing if you travel in winter.
Specifications
| Chemistry | LiFePO4 |
| Capacity | 40 Ah |
| Nominal voltage | 12.8 V |
| Energy | 512 Wh |
| Cycle life | 2000 cycles |
| Max charge voltage | 14.6 V |
| Max charge current | 20 A |
| Discharge current | 40 A standard · 80 A max continuous |
| Cell configuration | 4S2P cylindrical LiFePO4 |
| Weight | 4.2 kg |
| Dimensions | 195 × 166 × 170 mm |
| Warranty | 2 years |
| Operating temperature | -20 to 60 °C |
Certification: the factory that makes this product holds ISO. These certificates belong to the factory, not to Topenergy. We will name the factory and provide the certificate with its number on request — see certifications.
Best for
Weekend vans and small conversions. For a fridge running year-round, look at the 100 Ah.
Price on request. Send us the quantity and destination country and we will quote — request a quotation.
