Luminous brand is almost synonymous with inverters and batteries in Nigeria. Luminous batteries are manufactured in India. The Luminous Inverlast 220AH Tubular Wet Cells battery is designed to be used for inverter and solar installations. This is a 12V 220AH battery, meaning if you use a 12V inverter, you can use basically either 1 or 2 of these, a 24V will require the batteries in pairs(2, 4 or 6). You might have noticed that the battery looks a little taller than the common inverter batteries, that is correct; that’s why it’s called a tubular battery. It is also a wet cell battery, meaning it is not maintenance free as those common inverter batteries that are sealed (Sealed Maintenance Free, SMF).
These Luminous Tubular Wet cell batteries are usually more rugged and can withstand high and low temperature; they however require a little bit of maintenance as the electrolyte might need topping in about six months’ interval depending on the usage. A single battery of this type is capable of providing back-up power to a relatively small apartment with one TV and two fans; backup time should be minimum of 6 hours depending on inverter efficiency. This battery is equipped with visible gauges that allow you to see the level of the electrolyte and to top as at when needed.
Tubular Wet cell batteries have been reviewed to last up to five years under rugged usage and regular maintenance; I personally use two of these and I can easily recommend it. They are protected from overcharging and can easily recover from over-discharging.