KeepPower 18350 (2 pcs)

The best 18350s on the market Perfect food for your Alpha Shorty!  WORKS WITH: Prometheus Deltas, Alpha "Shortys," and and other 18350 lights KeepPower IMR18350 batteries are sold in PAIRS (2pcs) Here is what separates IMR cells from standard Li-Ion:  IMR cells are a specialized Li-Mn (Lithium Manganese) chemistry specificaly designed for high-drain applications. While they excel at delivering massive discharge rates, their capacity is much more limited than a Li-Ion of the same size. The KeepPower 18350 is the highest capacity IMR battery in this size, but it will only deliver 20 minutes of run-time on the highest power setting in an Alpha flashlight. Can't have everything right? That's also why the are sold in pairs :)  NOTICE: Using a "standard" (non-IMR) battery in an Alpha Shorty or Delta light may cause a fire and explosion. They cannot handle the massive current drain the light demands.