Winter solar light operation time is short?
The arrival of the cold wave is undoubtedly "adding insult to injury" to many solar street lamps. Recently, many solar street lamp users have reflected on the network platform that street lamps will have different degrees of problems such as shortened endurance, slower charging speed, and inability to charge in low temperatures in winter.
However, the structural differences also lead to the lower capacity of the LiFePO4 battery. The ions migrate easily in the hierarchical structure of ternary lithium, but the octahedron has greater resistance and lower activity during the migration process, and its power is more easily affected by the external temperature environment.
The capacity retention rate of LiFePO4 batteries is about 60-70 percent at 0 degree . It decays to 40-55 percent at – 10 degree below zero, and only 20-40 percent at – 20 degree . The ternary lithium battery can still maintain the normal battery capacity of about 70 percent – 80 percent at – 20 degree , which is the reason why the solar streetlights equipped with LiFePO4 battery have a more serious life loss in winter.
