Solar Battery Backup: Complete Guide for India (2026)
Power cuts (load shedding) remain common in many Indian cities — from 2 hours in metros to 6–12 hours in rural areas. Solar battery backup provides uninterrupted power. Here's how to calculate and choose the right battery bank.
Battery Types Comparison
| Type | DoD | Cycles | Cost/kWh | Weight |
|---|---|---|---|---|
| Lithium LFP | 80–90% | 3,000–6,000 | ₹18,000–₹25,000 | Light |
| Tubular Lead-Acid | 50% | 500–800 | ₹8,000–₹12,000 | Very Heavy |
| Flat Plate LA | 40% | 300–500 | ₹6,000–₹9,000 | Heavy |
For Indian homes, a 10 kWh lithium LFP battery bank (e.g., 200Ah @ 48V) provides 6–10 hours backup for essential loads (fans, lights, router = ~500W). This costs ₹80,000–₹1,20,000 and lasts 10+ years with 80% capacity retention.