In certain cases, you can use a solar kit made up of a solar panel and battery.

	20 W Kit	65 W Kit
Can I recharge the battery from an outlet?	Yes, but you need a 230-V ac adapter to USB 5-V (like a telephone charger)	Yes
Charging time through main power	approximately 6 h (to be confirmed)	6 h
Charging time through solar panels	5 h 15 (less under full sunlight)	X min
Can I charge the battery while also charging the KoomBook or tablets?	No	No
How many devices can be fully charged at once?	Theoretically 1	X
How many devices can be charged half way at once?	Theoretically 2	X
Maximum output from solar panel	5.5 V	19 V
Maximum output intensity from solar panel	2.1 A, but power drops quickly	3 A
Maximum output from battery back	5.2 V fully charged	5.3 V (USB), 20 V DC OUT
Maximum output intensity from battery	1.6 A on 1 USB port	4 A under 20 V