It is a debatable question but if this device does, what it says on the box and the price is right, and then yes this could well be the best solar powered unit yet. Quite simply because this unit will charge just about anything that needs charging and if the sun is strong it may only take around three hours to do so.

3

Features:

Capacity: 20000 mA/H (74W/h)

Output

-USB: 5V/ 500mA

-Voltage Port: Selectable 16V, 18V, 22V, 24V (all 3000mA max)

Input: 18V/ 2000mA max

Solar Panel Type: Monocrystalline

Charging Time

- AC: aprox 3 hrs

- Solar: aprox 8~10 hrs

Working Temperature: -5 ~ +60 deg C

Dimension: 205×282x18mm (LxWxD)

Manufacturer Ref.: DOSSS8Z2YDF1

Other Features:

Circuit Protection

Overcharge

Discharge

Short Circuit

- Heat

Included Wall AC Adapter + Car Cigarette Power Adapter

Included 11 Laptop Adapters to work with most laptops

- ASUS, HP, Samsung, ACer/T1, Dell, IBM, NEC, Toshiba

Included 13 Mobile Phone Adapter to work with most mobile phones

Motorola, LG, Nokia, Samsung, Siemens, Sony Erickson, AppleUltrasonic Mosquito Speaker: Emits high pitched frequency sound to repel mosquitoes

Accessories:

Manual

Mobile Phone Adapters

Laptop Adapters

AC Power Adapter

Car Cigarette Power Adapter

Manufacturer and Origin: China

Source [Eco friend]