You can charge your batteries before important events and use the tester to check precisely when batteries can still be used and when they must be replaced
Light Duration takes 17h
even when wearing gloves or in wet conditions
it is important to use a charger that can charge the rechargeable batteries optimally and thus significantly lengthen their service life
Ansmann Automatic LI-Ion & NIMH Charger AAA Batteries You can charge your batteriesCharger for 1 2 Li Ion rechargeable batteries (3. 6V 3. 7V) 26650, 22650, 18650, 18500, 17670, 16340, 14500 etc. or 1 2 NiMH rechargeable batteries (1. 2V) AA AAA Intelligent charger for 1 2 Li Ion rechargeable batteries (3. 6V 3. 7V) 26650, 22650, 18650, 18500, 17670, 16340, 14500 etc. or 1 2 NiMH rechargeable batteries (1. 2V) AA AAA, including micro USB charge cable Single slot monitoring, automatic detection of Li Ion and NiMH rechargeable