MASSIVE restock of EV Batteries at 5% coupon "POWERWALLS"
May 13, 2017
I just ordered 30 TP4056 to test.
Going to use a few computer power supplies to feed them.

Have 10 ZB2L3 boards I'm connecting now.

I started out with a xtar vp2, about the 10th battery I went to bulk charging with a imax b6 charging 30 at a time up to 4.0 volts, and using a regular power supply to rough charge them.

And bulk discharging with 2x 60w light bulbs, batteries at 4.1v each and discharge for 1 hour, check each battery for voltage and write that on the side.
Its not perfect but it is close enough, (120v dc is COOL, amazing how far you can arc a gap)