Lasting 10 times longer than a lead acid battery and weighing significantly less, Relion's lithium-ion batteries offer a cleaner, safer, and more reliable off-grid renewable energy storage solution. But that's just the beginning of lithium batteries' advantage over the tradition lead acid chemistry.
This 35 amp-hour battery delivers 3000-5000 cycles at a 100% depth of discharge. Most lead acid batteries offer cycle totals in the hundreds, and degrade substantially at discharge depths of more than 50% - meaning you don't get to use their full rated capacity. But the RB35 is tolerant of both completely discharging and operating at a partial state of charge without taking damage, which is a huge benefit when used in a solar PV system where extended periods without sunshine (and battery charging) are inevitable.
While ideal for off-grid solar applications, this lithium iron phosphate battery also works great in electric vehicles, RVs, and countless other applications.
After purchasing this battery on RealGoods.com, you will need to pick it up for FREE at the location you choose in the drop-down menu above (either our store or one of dozens of Battery Systems locations in the Western U.S.)
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To arrange direct shipping of your batteries instead, please call us at 800-919-2400 to order them.