Renogy 400 Watt 12 Volt Polycrystalline Solar Starter Kit with Wanderer With the Renogy Wanderer 30A PWM Charge Controller, you can expand your system up to a maximum of 400W The charge controller has been upgraded to Renogy's new 30A PWM negative ground charge controller - the Renogy Wanderer. Ideal output: 2000Wh per day can fully charge a 200Ah battery from 50% in 3 hours (depending on the availability of sunlight). Negative grounding controller with battery reversed, overloading, short-circuit and over charging /discharging protection ensures the broader off grid applications and safety. Especially can be used on a vehicle which has battery negative on the chassis The kit now includes a pair ofs 8ft 10AWG tray cable to connect your charge controller and battery.