From on camera LED lights, to wireless Audio kits, and portable audio recorders, there's something in your bag of gear that will require AA / AAA batteries. Here's a couple of helpful AA / AAA battery charger reviews that touch on smart-chargers which work on an individual cell basis.
This first video from @HDSLRNOW (follow twitter here) showcases the La Crosse BC-700 (also available in BC-1000) Battery charger. Can charge NiCad and NiMH AA and AAA rechargeable batteries simultaneously, featuring 4 modes: charge, discharge, refresh, and test, 4 separate LCD displays for simultaneous readouts, and offers Overheat-detection to prevent over-charging.
The next battery charger review from Shuttertastic.com is almost double the price of the small La Crosse, but this Powerex Maha MH-C801D offers a large LCD display with Eight independent slots, Selectable soft and rapid charging speeds, Built-in battery deep-conditioning system, and works with a variety of popular rechargeable batteries.