PWM Controller
PWM uses the digital output of the microprocessor to control the analog circuit. It adopts three-stage charging method: strong charge, balanced charge, and floating charge. The PWM solar controller solves the problems of battery dissatisfaction and short battery life

Solarparts Store
Xinpuguang Epsolar 5A 10A 20A 30A PWM Solar Controller 12V/24V for Solar Panel System Kits
Da $14.90