Inverter backup worksheet: load, VA, battery, hours
Inverter Backup Planner · build.nineclip.com/systems/inverter-backup-2bhk/
1. Load list (runs during a cut)
| Appliance | Label V | Label A | Watts | How many | Total W | Night Y/N |
|---|---|---|---|---|---|---|
| Fans | ||||||
| Bulbs | ||||||
| TV | ||||||
| Router | ||||||
| Total |
2. Inverter
Total W ÷ 0.8 = VA
Total W ÷ 0.7 = VA
Size chosen, VA
Battery volts: 12 V / 24 V
3. Battery
Ah
C-rate: C10 / C20
Warranty: free + pro-rata, months
Inverter accepts this Ah: yes / no
4. Backup hours
- Makers' formula: Ah × 12 × 0.8 ÷ W = ___ h
- Fast discharge (calculator page or this plan's table) = ___ h
- Plan on the lower number
5. Backup log
| Date | Cut length | Beeped after | Water topped | |
|---|---|---|---|---|