When picking a light for tactical or EDC use it’s easy to overlook charging style or even battery. Features like size, power and rail adoption often eclipse some critical features. Even more so if you need a backup light (everyone should) or an older light you just can’t seem to let go of. When I took a look at the ARB-L16-700U it was pretty unassuming, a battery with a USB port for charging. While there is certainly seems fairly uneventful I was pleased to see some simplification and efficiency. When in the field I already carry a larger battery pack for quick charging the GO Pro and Phone in emergencies, paired with a multi-adaptor for all kinds of USB types I am always ready for a power emergency. This little battery fits right in, I was able to keep my setup and eliminate extra batteries, additional cables, or magnetic bases. The charging was slow off of the battery pack (an older model) but much quicker off of a primary source (laptop) that again is always available. The real benefit here is the heat control, I have charged enough batteries to know that they get hot when charging. There is no doubt if the environment is already hot, tuning up a battery in that same environment is a bad idea. This is likely to damage charger, battery, or light. When running the ARB-L16-700U I noticed a much cooler battery, both indoors and out (direct summer heat) there was no noticeable change to the battery temp. Good news for those looking to stuff it in a pack while charging, or already in heated climates. Pair this with a small status light on top and you have everything for power on the go in one small package. The best news? I wasn’t forced to give up run time for these features. Take a look, it may be an upgrade you overlooked.