brushless and A123 questions

[highflier]

Yes CC CV charger would be the ideal solution. But this took minutes to create and cost next to nothing. Oh and it is so easy to make if you know how to use a wrie cutter and a soildering iron you can make it :)

I figured out my wire lengths.
I settled on 15' of 18 guage wire. A dead pack started at a charge of 12 amps but quickly droped to 8 amps and hovered theere for 15 min or so. at that time the voltage was 11.5 and I called it charged. Thus I can charge packs in 15 min. That is faster then the brushless E-maxx will discharge them. I am happy!!! Now I am looking forward to a new stadium brushless conversion.. It will use just a single 3s pack I Figure I will get about 10-15 of good run time per pack. I will be able to use 1 pack for 1/10 scale and 2 or 4 packs for the 1/8 monster truck.

Highflier

[zeropointbug]

Yes, but you also would want a decent charger to keep the lead acid batt topped up. As well, you would need a 12v battery in the first place, if not, you are paying at least $100 for a good deep cycle lead acid, at least I would want a deep cycle batt for that.

It's a fast way to charge at the very least though, and I don't know of a programmable power supply that can deliver 20 amps and charge 3s for under $200.