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SANDISOLAR (Brand+) Store via [aliexpress.com] has SANDISOLAR 15kWh-Class 51.2V 300Ah Rack-Mount LiFePO4 Solar Battery on sale for $1608 when you Apply $155 off Coupon at checkout: USAFF155. + Free Shipping from US warehouse.

This rack-mounted Battery combines 300Ah of capacity w/ a 51.2V nominal voltage for solar energy storage.

Prices may vary by $1-$3 depending on your account location.