For the battery in the Solar Energy Storage solution, we generally recommend LiFePo4 battery. First of all, in the solar scenario, the frequency of charging and discharging of the battery is very high. If lead-acid batteries or 18650 batteries are used, their lifespan will soon be exhausted within 1-2 years, so they have to go to the station for maintenance, which is very expensive. of. The second reason is temperature. The working temperature of the lead-acid battery is 25 degrees Celsius, while the lithium battery can reach 45-55 degrees Celsius, thereby reducing the heat dissipation requirements of the enclosure.