Inverter Battery Combos

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• Size the inverter to the load. Add up the wattage of everything that must run during a power cut (lights, fans, TV, router, fridge). Pick an inverter rated comfortably above that total — an overloaded inverter trips or wears out early.
• Match system voltage to the battery count. 12V inverters run on one battery, 24V on two, 36V on three, 48V on four, 72V on six and 120V on ten. Larger loads need higher-voltage systems, which also means more batteries and more floor space.
• Choose the battery type. Tubular batteries give the longest backup per rupee but need periodic distilled-water top-up. Gel batteries (AmpBox) are maintenance-free and suit homes where upkeep is a hassle, at a higher price.
• Check capacity for backup time. Higher Ah (tubular) or hours at 400W (gel) means longer backup. Compare the listed capacity with how many hours of backup you actually need.
• Tall or short tubular. Short tubular (ST) batteries are lower in height and fit shorter shelves or trolleys; tall tubular batteries are the standard option.
• Prefer pure sine wave for electronics. Pure sine wave is safer for TVs, computers, fans and motors. Square wave models are only suitable for basic loads.
• Compare warranties. Battery warranty is often split into free-replacement and pro-rata periods — compare both, not just the total. Inverter warranty is 36 months across the range.
• Display and trolley. Models with a digital display show battery and load status at a glance; trolley combos make moving the battery and inverter easier.
• Check the price and availability. Prices are as listed on Luminous India — confirm before quoting.