Prevent over charging and over discharging to the battery.
Suitable for 6V and 12V solar panel and rechargeable battery.
Can be used by 5W to 20W solar panel.
Plastic casing, compact and light weight.
Please connect the battery to the controller before connect the solar panel.
B+- means connect the battery’s positive and negative pole.
S+- means connect the solar panel’s positive and negative pole.
L+- means connect the load.