Wich battery will fit in the G&G UMG?
 

I just got the G&G UMG, and I was wondering if any type of stick type battery would fit in it?
and wich voltage should I use (8.4V or 9.6V?)

Thx

Not sure what type of battery the UMP uses, but on stock parts I'd stick to an 8.4v.

Probably an 8.4V, and there are batteries designed specifically for UMPs, but I've only seen them in a few places.

9.6V is for nothing more than running an upgraded spring, because an 8.4V simply doesn't have the power to do it quickly enough...or at all in some cases. Without an upgraded spring, a 9.6V battery will just wear your internals out faster, and if you've got a fuse in your gun, you have to remove it first. Pain in the ass if you can't readily do it yourself.

for the AA double stick configuration, could I custom make one, based on my other battery I had, it's a intellect 2000mAh double 9.6v (with AA cells)for m4 handguard, or order one on ''cheapbatterypacks''

Just stick to an 8.4V. ROF isn't everything, and if it ensures the longevity of the guns state, keep it.

I own a UMG...

I use this

SYO-96-1100UMG
Sanyo 9.6V 1100mAh for UMG ( Ni-CD ) In Stock US$31.00

from WGCshop

You might be able to stick a lipo in there... :)

but would this battery fit?
http://redwolfairsoft.com/redwolf/ai...l?prodID=25966

or this one

http://redwolfairsoft.com/redwolf/ai...l?prodID=25964

Or should I simply modify the one I already have (http://www.battlesim.com/zen/images/NUM200096.jpg) just by making the wires longer....

I owned a UMP, an intellect 8.4v 1200mah stick battery fits, guaranteed, and it fills up the ENTIRE battery compartment, you couldn't fit another 1/4 cell in there.
The ROF is high enough with an 8.4v anyway