The Eastman 220Ah Solar Battery (Acid / Flooded Tubular Type) is a 12V deep-cycle lead-acid battery designed for solar power systems, inverter backup, and off-grid energy storage. It is one of the most commonly used high-capacity tubular batteries in residential and small commercial solar installations.
This battery is a flooded (wet cell) tubular lead-acid battery, meaning it uses liquid electrolyte (sulphuric acid + distilled water) and requires periodic maintenance (water topping).
Key Features
- Capacity: 220Ah (12V system)
- Battery Type: Tall tubular flooded lead-acid (deep cycle)
- Energy Storage: ~2.6 kWh usable nominal energy
- Plate Technology: Tubular positive plates for deep discharge cycling
- Cycle Life: ~1100–1300 cycles at 80% depth of discharge (DoD)
- Maintenance: Low–moderate (requires distilled water top-up)
- Design Life: ~5–8 years depending on usage and charging quality
- Weight: ~65–70 kg (very heavy due to lead content)
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