Renogy 300 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 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 charge controller has been upgraded to Renogy's new negative grounding 30A PWM Charge Controller the Renogy Wanderer Ideal output: 1500Wh per day can fully charge a 150Ah battery from 50% in 3 hours (depending on the availability of sunlight) The kit now includes an 8ft 10AWG Tray Cable to connect your charge controller and battery.