12.8 V 100 Ah lithium battery backup time
How long a 12.8 V 100 Ah LiFePO4 battery (1.28 kWh) runs at different loads.
- About 2 h at 400 W
- 1.28 kWh stored
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Backup by load
Using 80% depth of discharge and 80% inverter efficiency. Lithium gives nearly the same share of its capacity at any home load, so time falls in step with the load.
| Load | Backup |
|---|---|
| 50 W | 16 h 25 min |
| 100 W | 8 h 10 min |
| 150 W | 5 h 30 min |
| 200 W | 4 h 05 min |
| 250 W | 3 h 20 min |
| 300 W | 2 h 40 min |
| 400 W | 2 h |
| 500 W | 1 h 35 min |
| 600 W | 1 h 25 min |
| 800 W | 1 h |
What it runs in a home
Our estimate for a 12.8 V 100 Ah battery, fully charged. Each set is listed on its own page with the appliances in it.
| Home set | Running load | About this long |
|---|---|---|
| 1 BHK home | 276 W | 3 h |
| 2 BHK home | 519 W | 1 h 35 min |
| 3 BHK home | 671 W | 1 h 15 min |
| Refrigerator | 168 W | 4 h 55 min |
| Air cooler | 466 W | 1 h 45 min |
| Work from home | 303 W | 2 h 40 min |
| Small shop | 390 W | 2 h 05 min |
Models we list
| Model | Warranty | Cycle life |
|---|---|---|
| Loom Solar CAML10012 | 60 months | More than 6,000 cycles at 80% DoD |
| Luminous Helios 12.8V 100Ah | 60 months | Up to 3000 cycles |
| Microtek MLB1280060 | 60 months | > 4000 cycles @ 80% DOD |
Check that your inverter supports lithium before you switch: the charging voltage and cut-off are different from lead-acid.