Solar Max Tubular Batteries

C10 means the capacity is measured while discharging the battery over ten hours. The same battery rated at C20 — a slower twenty-hour discharge — will show a noticeably higher Ah figure, because lead-acid batteries deliver more total energy when discharged gently. Solar and inverter duty draws harder than twenty hours, so C10 is the honest rating for this application. When comparing quotes, always confirm which rate is quoted: a 200Ah C20 battery is not equivalent to a 200Ah C10 battery. Solar Max is rated at C10.

DoD is how much of the battery's capacity you use before recharging. The deeper you go, the fewer cycles the battery delivers. Solar Max supports up to 80% DoD when needed, and is rated for 3000 or more cycles at 50% DoD. Designing a bank so routine daily use sits around 50% and the 80% capability is reserved for extended cloudy periods gives both long backup and long service life.

Work from daily consumption. Total the watt-hours you need each day, divide by the DoD you plan to use routinely, and allow for the days of autonomy you want during poor weather. A 240Ah 12V battery holds around 2880Wh, of which roughly 1440Wh is usable at 50% DoD. Two days of autonomy on a 1200Wh daily load therefore points to a larger bank rather than a single unit. Charge controller output must also be sufficient to refill the bank within available sunshine hours.

Solar duty is harder in a specific way: the battery frequently sits at partial state of charge, is charged at a varying rate as clouds pass, and may not reach full charge for days in poor weather. Solar-optimised batteries are built for high charge acceptance from a controller and low self-discharge — under 3% per month here — so stored energy survives cloudy periods. An inverter battery charged from a stable grid is not designed around those conditions.

Enhanced water retention and ceramic vent plugs extend topping-up intervals to six months or more in normal conditions. Beyond that: keep terminals clean and tight, keep the bank ventilated, and use distilled or demineralised water only when topping up. Batteries operating at the upper end of the -10 C to +55 C range will need checking more often, since heat drives water loss.

Yes. Tesla Power USA appoints distributors, wholesalers and importers by territory, with West Africa and East Africa currently prioritised — both regions with substantial off-grid electrification, solar pumping and telecom hybrid demand. BIS IS 16270, IEC 61427 and MNRE approval support tender and import documentation, and the team can spec battery banks for residential or commercial solar projects.