Good replacement battery for Klarus flashlights, but not rechargeable in the flashlight itself.
"I was very happy to find this battery to replace my original Klarus 18650 battery in my RS11. However, I was disappointed to find out that this battery can't be charged by my RS11 flashlight itself. I need to purchase another separate 18650 charger to charge the battery and then put it back into the flashlight. This defeats the purpose for me to buy the OEM battery. I made sure that it wasn't the flashlight that wasn't charging the new battery. I recharged the old cell and then tried to charge this new one again. But it just didn't charge. (Old battery was holding a very low charge and lighting the flashlight very dimly for a few moments after being charged. ) This battery, and for that matter my Klarus RS11 have no use anymore."













