Grade A import solar cell panel,charging efficiency up to 15%-21% ,lifetime is about 25 years .

Built-in Class A LiFePo4 Lithium battery,easy to replacemment,safty for shipping .

OEM intelligent Controller : on / off automatically, Overcharge & Over discharge protection ,more than 5 years lifespan.

High Brightness SMD3030/5050 LED Chip up to 180-230LM / W, customers could chose the LED Brand for their OEM order .