Metal man the physical size of each cell is 2 9/16" long (basically 2 1/2")

3/4" round.

As far as I can tell so far is they are 1500 mah 3.7 volts a piece

With minor mods they fit 2 long and 2 high in an E maxx.

I have mine built for the most part just need some large shrink to put them in. I will try and get some pictures soon.

For the record it is realtively easy to put a 4s 2p 14.8 3000 mah in 1 of the battery trays. So when you make 2 of these packs (1 for each of the battery trays) you can get 6000 mah at 14.8 volts.

If a person had extra room or wanted to do alot of extra work you get a 5s to work.

Sooner or later I may do a 5s but I would need to upgrade my charger and do some mods to the battery tray.

Right now I have a 6000 mah pack and have roughly 140$ dollars into it.
I like the packs alot better than lipos do to the fact they are in a metal case and can take alot of abuse vs lipos.