An off-grid solar energy system requires solar lead acid batteries, and a grid tie solar power system does not require a battery.

1. If it is a home grid tie solar systems that connects solar power generation, home power grids, and public power grids, there is no need for storage gel batteries. When the power generated by solar energy exceeds the power used by household appliances, the excess electricity is transmitted to the public grid; and when When the power generation capacity of solar energy cannot meet the use of household appliances, it is automatically replenished from the grid. This entire process is intelligently controlled and does not require manual operation.

2. If an off grid solar power system operates independently without relying on the grid, a battery is needed. The electricity generated by the solar panel flows directly into the battery and is stored. When it is necessary to supply power to the electrical appliance, the DC current in the battery is converted into 220V alternating current, this is a repeated cycle of charging and discharging process.