These images should be pretty self explanatory. A Pelican 1060 Micro case and AA battery holders from LightwareDirect.com. (they are in the Cool Tools section). This battery kit lives with my speed light flashes. It’s always there. The nifty thing about using this is that battery will insert either way. So if I insert the battery and the little silver top is showing in the hole ( at the top) it tells me its charged and ready. If the battery is inserted up side down and its showing the flat side (-) it tells me it needs recharging. Simple but effective. They stay organized and makes traveling easier.