https://www.loomsolar.com/collections/solar-battery Solar battery is a device that reserves energy for later consumption that is charged by a connected solar system. The stored electricity is consumed after sundown, during energy demand peaks, or during a power outage. Most common on residential or commercial buildings. Having a solar battery system can help mitigate the amount of electricity you would normally buy during peak hours. It can store the extra energy generated from your solar panels during the day for you to use at more expensive rate times.