Solar Battery & off-grid batteries. Power backup for home during power outages. Solar batteries are the heart of every off-grid solar power system. They are also called deep cycle batteries for their ability to handle long, frequent, deep charge, discharge cycles. From lead-acid, today’s solar shoppers now have a wealth of battery types, and sizes to choose from. Batteries are rated in amp-hours, or simply amps. The most common battery technology used for renewable energy systems is lead-acid, in which lead plates are submerged in sulfuric acid. Lead-acid batteries (while bulky) are relatively inexpensive and readily available compared to other battery types.

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