Combining USB PowerBanks

[prashsax]

Hi Experts,

 I have two 2600mah power banks.
 Is it possible to increase output current, if I join output terminal of both circuit together in parallel.
 As both these circuit board gives out 5v/1Amp each, would I be able to get 5v/2Amp output.
 Similarly, I will also connect USB input terminal together in parallel, so both cells will charge simultaneously.

 Does, joining output harm my powerbank circuit or my device?

 Please advice.

 Thanks
 Prashsax

[German_EE]

Joining the outputs together to double the load current will not be a problem. Use either a 0,1 ohm resistor or a schottky diode on each battery so that the current draw will be better balanced.

The batteries should however be charged individually.