Automatic battery switching

[Solardave]

Hi. I'm fairly new but am working on a solar powered battery pack fou chafing cell phones and similar USB 5v devices. My setup is using off the shelf solar panels, a lipoly battery and charger and a minty boost. The batteries I am using are rated at 6Ah. I want to increase the stored power available so originally assumed I could wire two batteries in parallel. I have since found out that lipoly batteries need to be balanced sets and my plan won't work. Any suggestions would be greatly appreciated.

 

[Resqueline]

My impression is that parallelling poses no problems, and that it's serial connections that needs balancing circuits.