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(More customer reviews)This product is advertised as the NEW Energizer Rechargeable NiMH AA Batteries. But once you received it, you may be shocked to find out that: the rated capacity of those NEW batteries is just '2300mAh', lower than the previous generation of '2500mAh' Energizer NiMH cells. So are you really getting a new and improved product, or just some old inventory from many years ago?
The fact is, Energizer has discontinued the '2500mAh' series of rechargeable AA NiMH cells, presumably due to massive complaints about rapid-self-discharge problem. All new Energizer rechargeable AA cells on the market now are rated '2300mAh'.
I have tested four of those new cells, using the Discharge/Refresh function of my La Crosse BC-900 charger/analyzer. Here are my findings:
- Fresh out of the package, those cells hold an average of 330mAh, or just 14% of the full capacity.
- After fully charging them for the first time, the hold an average of 1040mAh.
- After two more discharge/charge cycles, the average capacity improved to 2340mAh
Based on the above observations, I can conclude that those NEW Energizer cells are just ordinary NiMH cells with lower capacity. They are not the LSD (low-self-discharge) type pioneered by SANYO eneloop. This is very disappointing, because other name-brand battery makers have already introduced LSD products similar to eneloop, such as the Rayovac Hybrid and Duracell Pre Charged. In contrast, the Energizer Bunny simply 'rolled back' its battery technology to circa 2004.
In summary, those so-called 'New' Energizer NiMH cells have capacity just slightly higher than LSD NiMH cells (2000-2100mAh), yet do not offer the advantage of lower self discharge rate. As of this writing, this product is priced at nearly 2x higher than LSD cells. So it is just a bad deal.
The only positive thing I can say about those 2300mAh Energizer cells is: they _probably_ don't leak as badly as previous generation of 2500mAh cells.
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Product Description:
Energizer Rechargeable batteries are highly recommended for high-drain or frequently-used devices- ones that you use more than once a week- such as digital cameras, portable audio players, two-way radios, handheld games, and GPS equipment.
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