Solar IPS & Inverter Sizing Calculation Guide for Bangladesh Homes

1. Calculating Your Total Wattage Load

List every appliance intended to run during outages:

• Ceiling Fan: 65W to 75W (BLDC fans only consume 28W - 35W)
• LED Light Bulb: 15W to 20W
• LED TV (43-inch): 60W to 80W
• Wi-Fi Router: 10W

2. Sizing the Inverter (VA Rating)

Divide your total operational wattage by a Power Factor of 0.8 to determine the required Inverter VA. For instance, a 500W load needs at least a 650VA to 800VA inverter to operate safely with reserve headroom.

3. Selecting the Right Tubular Battery

Ordinary automotive car batteries are designed for brief high-amp cranking and will fail in months if used for deep discharge cycles. Always insist on Tall Tubular Solar Deep Cycle Batteries offering 1200+ discharge cycles.