This device is a 100A resettable circuit breaker used on solar panel, automotive and audio equipment.
This is a 6 volt solar panel @ 200mA measuring 112x 84mm suitable also for cellphones.
This is a 5 volt solar panel cell at 4.5 watts measuring 165 x 165 x 2.5mm.
This solar charger controller module can take either 5VDC from Micro-B USB port or 4-6VDC from a solar panel and charge your battery banks when required.