JC Dodge has an article up at American Partisan about keeping your batteries for various important devices charged up when you can’t just plug in an AC adapter –Making The “Lightning” For Your Force Multipliers.
Since the 90’s, I’ve carried a small solar charger for AA batteries in my kit. This was for keeping certain devices I had, like flashlights and PVS-7 NOD’s, operating in the field when there was no chance to get new batteries or charge the rechargeables I had on household 110 system. I started using CR123 batteries in the early 2000’s when I bought an IR laser that used a single 123 battery, and shortly after, I upgraded my weapons light to a two celled, CR123 powered, Surefire.
The use of CR123 batteries put a gap in my preps because, at that time, no one was selling 123 rechargeables. Oh well, guess when they’re done, the IR laser and Surefire is done, right? I made sure I bought a lot of CR123’s for storage. Back in 2013 I found CR123 rechargeables that were made by a company called Tenergy, and I’ve been using them ever since. The caveat to using Tenergy 123’s is that their charge is a little higher than a normal CR123’s 3.2 Volts and two together will burn out a standard Surefire bulb immediately upon hitting the switch (ask me how I know…). No problem, I also ordered some programmable bulbs for my lights and I was back in business.
Last year I decided to get with the times and see if I could come up with alternative charging means to recharge not only my AA’s and CR123’s, but also my 9 Volt batteries for my laser range finder and heat (game) detector. My FLIR 24 which has an internal battery and recharges via micro USB also needed a way to get a boost in the field…