As anyone who owns an AUG knows, the battery compartment is TINY. With standard cells, there's room for a 1500 mAh 9.6V, but that's about it.
I used to have a large 3300 mAh 8.4V NiMh battery strapped to the side of the gun, but I hated that. It was really heavy.
So the obvious solution (and the one potentially involving the most fire) was to go the Li-Po route!
The batteries I used are intended for an RC helicopter. I got them here:
http://www.dealextreme.com/details.dx/sku.7621
Using the "bulkrate" coupon brought the price down under $7 each.
I wired them in parallel. Since each is 900 mAh, this means I have a total of 2700 mAh. Mind you, it's only 7.4 volts but these things are powerful. ROF was much higher than with the stock 8.4V mini. It was on par with the 8.4V large battery, or a 9.6V mini, both of which I've tested in my gun.
Here's a pic of all 3 after I soldered on the deans connectors:
This pic blows my cover as an american
It fits! I made a harness to split my AUG's single deans connector into three. This way I can still use a single battery if I want.
The rubber buttplate goes on fine. No bulges!
I'm really happy with how this turned out. I was keeping my fingers crossed that the ROF would be acceptable, and it definitely is. Plus, you can't argue with 2700 mAh INSIDE an AUG.
Any questions?