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Lithium solar batteries are simply lithium batteries used in a solar power system. More specifically, most lithium solar batteries are deep-cycle lithium iron phosphate (LiFePO4) batteries, similar to the traditional lead-acid deep-cycle starting batteries found in cars.
A High Voltage Wall Battery is a battery with a relatively higher energy density than normal batteries. This energy density results in a higher capacity for energy storage.http://www.youthpowergy.com/lithium-solar-battery/