KEEPPOWER 18350 (1200 mAh) Rechargeable Li-Ion:
WORKS WITH: Prometheus Delta/Alpha Shorty (and other 18350 lights)
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.
Recharge early and often!
Do not run rechargeable batteries until they are completely empty (when the light shuts off on its own). Doing so will trip the protection circuit and render the battery inoperable. The Foursevens Flex Charger and Xtar VC2/VC4 chargers are normally able to reactivate a tripped battery; however, best practice is to recharge early and often. Fully discharging the battery causes long term damage to the cell.
Storage
ALWAYS store batteries in a protective case that will prevent short circuits. NEVER put bare cells into a pocket, bag, or drawer. A short circuit will lead to an uncontrolled release of energy...otherwise known as a ball of molten lava.
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Size18350 (18mm x 35mm)
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Weight1.1 Oz each
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Terminal Type"Flat Top"
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Voltage3.7V Nominal (4.2V full charge)
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Capacity1200 mAh
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Service Life~500 Cycles
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Charge Retention80% @ 6 Months
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Maximum Discharge10 Amps @ 8C
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Electronic/Mechanical ProtectionNot available with IMR chemistry (beware of short circuit)
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Where it's made