I predict this will be replaced within 1yr.
IMHO rechargable weapon lights are a bad idea. Once the battery wears out the light is dead. rechargeables do not work well in the cold. rechargables run down while sitting, meaning you need to KEEP it charged regularly.
disposable lithium batteries typically have a 10yr shelf life, and work well in the cold.
Also, the reviews on amazon on this light are not encouraging.