AA Battery for Very High Current drain and Low Self-Discharge Rate?
For a short duration (10 seconds), very high current drain (1 - 2 Amp), but still maintaining low self-discharge rate (70% or more within 1 year).
For example, Rechargeable AA NiCd / NiMh great for high current but mediocre self discharge. Non-rechargeable Alkaline / Lithium AA has virtually no self discharge, but does not withstand very high current drain.
The perfect battery is supposedly Rechargeable Lithium-Ion (which is used in new generation cordless power tools (drills, etc), but IS AA SIZE (PENLITE) RECHARGEABLE BATTERY EXIST, YET?
Otherwise what's best the AA alternative?
I heard Sanyo's Eneloop isn't good if being used for very high current, is this correct?
Answer:
How about using a hybrid system with an alkaline battery and a super capacitor. You may need to charge the capacitor first then dump the high current. You could also try this with alkaline and NiCd batteries where the alkaline charges the NiCd , just before it is used for 10 seconds.
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