Which wall charger is compatible?

[leannebug]

I have several of the wall adapters with the USB plug (hole only, no plug) and I'm trying to charge a bunch of things.....PCC for an 808, a generic PCC, and a couple various batts... but I don't know which one(s) to use.

Does it matter? How do I choose?
They all have different numbers on the backs (outputs and inputs and volts)

I hestitate plugging it into my laptop.

TIA!!