Our rechargeable lights use either Nickel Metal Hydride or Lithium-ion batteries. In both cases “conditioning” will improve the performance and run-time of the product over time. To condition a new rechargeable light, plug it into the charger and allow it to fully charge. Once the light is charged, disconnect it from the charger and turn it on. Leave the light on until the light stops running.  You will now have fully drained the battery.  At that point, plug the light into the charger and allow it to fully charge again.  It is recommended to repeat this process at least 2 or 3 times for optimum performance of your light. Once your light’s rechargeable battery is fully conditioned, this process does not need to be repeated for Lithium-ion batteries unless the battery is replaced with a new one.  If your battery is a Nickel Metal Hydride, it is recommended to recondition the battery monthly.