Now here is an idea I wish I had back in the Corps. With most accessories operating off of CR123 and AA batteries, keeping spares was a pain in the arse as most of the time we simply put them in a plastic baggie in a grenade pouch so they were always on our person as one did not want Night Vision to go out when away from the supply chain. The bags were sufficient, but not convenient.
Stepping up the convenience factor is TNVC who has created the BATTERYCLIP (all caps their choice, not mine), which is simply a spring loaded polymer tube for easy battery management which conveniently keeps the tips from touching and discharging. The clip includes “round count indicators” for those managing power tactically.
Those interested in moving from the proven baggie system can pick them up for $19.95. They are available for 9V, CR123, and AA batteries. Of course, there are an array of colors including tan, grey, and black.