Exide FEM1-IMST1000: specs and backup time
Exide’s 100 Ah short tubular battery: what the maker states, and how long it runs your load.
- 100 Ah
- Warranty: see the maker’s page
- About 1 h 25 min at 400 W
Specifications
As stated on the manufacturer’s page, read on 15 October 2026. “Not stated” means the page doesn’t give it.
| Brand | Exide |
|---|---|
| Model | FEM1-IMST1000 |
| Type | short tubular |
| Capacity | 100 Ah at C20 |
| Voltage | Not stated (12 V is standard for inverter batteries) |
| Warranty | Not stated |
| Weight | 41.3 kg |
| Cycle life | 1000 Cycles @ 80% DOD |
| Source | Exide product page |
Backup at other loads
A healthy, fully charged battery on a 12 V inverter.
| Load | Estimated backup |
|---|---|
| 50 W | 19 h 10 min |
| 100 W | 9 h 30 min |
| 150 W | 5 h 55 min |
| 200 W | 4 h 05 min |
| 250 W | 3 h |
| 300 W | 2 h 20 min |
| 400 W | 1 h 25 min |
| 500 W | 1 h 05 min |
| 600 W | 55 min |
| 800 W | 40 min |
What it runs in a home
Our estimate for a healthy, fully charged battery. 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 | 2 h 35 min |
| 2 BHK home | 519 W | 1 h 05 min |
| 3 BHK home | 671 W | 50 min |
| Refrigerator | 168 W | 5 h 10 min |
| Air cooler | 466 W | 1 h 10 min |
| Work from home | 303 W | 2 h 15 min |
| Small shop | 390 W | 1 h 30 min |
Similar batteries
The warranty is as each maker states it. Backup uses the same model for every battery, so the rows compare fairly.
| Battery | Capacity | Warranty | Backup at 400 W |
|---|---|---|---|
| Exide FEM1-IMST1000 | 100 Ah | Not stated | 1 h 25 min |
| Exide FEP0-IPST1000 | 100 Ah | Not stated | 1 h 25 min |
| Exide IZST1000 | 100 Ah | 48 months (24 free replacement + 24 pro-rata) | 1 h 25 min |
| Livguard IT1048ST | 100 Ah | 48 months (24 free replacement + 24 pro-rata) | 1 h 25 min |
| Exide FEM0-IMTT1200 | 120 Ah | Not stated | 2 h |
Inverters that take one of these
Home inverters that run on one 12 V battery.
Inverters that take two of these
Home inverters that run on two 12 V batteries (24 V).
Exide FEM1-IMST1000 questions
How long does the Exide FEM1-IMST1000 last at 300 W?
About 2 h 20 min, on our estimate for a healthy, fully charged battery. At 100 W it is about 9 h 30 min.
What warranty does the Exide FEM1-IMST1000 have?
Exide’s page does not state it. Ask the dealer for the warranty card.