I bought a Tengery 3800mAh pack last year, agreed they are garbage. I still can use it (when it wnats to charge) but my Sanyo 8.4V 3300mAh battery still runs and charges strong, been using it a LOT since I bought it in 2005. And the 3300mAh out performs the 3800mAh, go figure. Buy cheap, get cheap. Got mine for $25US.
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