Hello fellow modders. Been quite a while since I was here last, and Im glad to be back.

It seems I have a problem regarding battery chargers. A week or so ago I pulled out all my xmod gear, and decided to tweak and race a few of my Gen1 and Evo Xmods, but was foiled by dead batteries on a couple cars.
Early last year I bought a Li-Po 7.4V pack w/ charger for one of my Evos, and a 7.4V Li-Io pack w/charger for a Gen1 ride. Both were purchased on ebay, but from which supplier(s) and when I would have bought them, I cant remember. My issue is this: I now have two 'wall-wart' power adaptors of differing voltages and current capabilities, both of which have identical Deans micro connectors. Im not sure which charger is which, and was hoping someone might recognize the voltages and/or model numbers of them and give me a shout if they look familiar.  

Adaptor 'A' = Model# LIN-0302,   Output 8VDC 500mA

Adaptor 'B' = Model# ACP-12U,    Output 5.7VDC 800mA   "32MM LTE Power Supply"

I keep getting mixed info on charging rates when I try to research this so any help or info would be great.

Thanks guys. - mech