DoMark International Inc. (fka DOMK)

[Voices of Reason]

Solapad/Voltpad Specs: http://www.voltsolarproducts.com/Products/VoltPad

Somebody please check my math:

Integrated Battery Charge = 5V x 1A (1000mA) = 5 Watts
Battery capacity = 6 A-hours (6000 mAh) x 5 V = 30Wh
Time to fully charge battery (linear) = 30 / 5 = 6 hours in the sun

Solar Panel capacity = 5.5V x 0.42A = 2.31 Watts

Output Power = 5V x 2A = 10 watts

From apple website: http://www.apple.com/ipad/specs/
Rechargeable battery = 42.5 watt-hour for 9 hours of surfing fun.

Theoretical charge time (linear) from the Solapad = 42.5 / 10 = 4-1/4 hours either in the sun or from the integrated battery.

However, the battery charger only has a capacity of 30W, so the ipad would need 3 hours (linear) to receive all of its solapad capacity to achieve partial (70%) recharge of the ipad. I guess the claim of "never having to plug in your ipad again" assumes you spend at least 6 hours in the sun to replenish the solapad and assumes you only use the ipad 70% of its useful charge life and have at least 4.25 hours each day to dedicate to the recharge.

comments?