I am building a wired trigger for shutters. My working prototype is powered by 4 AA Eneloop batteries. I get around 500 actuations per charge, which is quite good, I think. The only issue is that the case then becomes quite bulky. My friend, who is designing the electronics, suggests using a 3.7V lithium battery like this: http://www.batterybob.com/products/1...ery-pda-279li/ He tested this battery, and the results were quite good.

But these batteries require charging within the device, which leads to all sorts of regulatory issues. I'd prefer to use a standard camera or video camera battery like this Watson battery. But I've not been able to locate a holder for these batteries.
Can I use this adapter plate to hold the batteries within the device?

Any other suggestions?

Thanks,
Kumar