4 Ah charge controller -STS01204

Charge Controllers/Regulators
Battery reverse feed protection
Overload protection
Battery open circuit protection
Lightning surge protection
Deep discharge protection
Charge current protection up to 4A
All solar panels (except the 5w &10W) require a voltage regulator to ensure that the battery is not overcharged. We recommend the STS01204 for the 18w, 28w. 43w and 60w panels.