Sanyo Eneloop AA NiMH Pre-Charged Rechargable Batteries with Charger - 4 Pack
by SANYO
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Our Price: $19.95
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Category: Speakers
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Digital Photo Product Details
Manufacturer: SANYOBrand: Sanyo
Edition: Electronics
Model: SEC-MQN064
Color: white
Publisher: SANYO
Studio: SANYO
Music Label: SANYO
Product features:
- Compact charging kit with quartet of 2,000 mAh AA batteries for digital cameras, remotes, and more
- Pre-charged and ready to use right out of the pack; preserves charge for long periods of time
- Extremely slow self-discharge rate maintains 85 percent of capacity after 1 year of storage
- Over-voltage protection system; foldaway AC plug offers worldwide voltage for traveling
- Batteries can be charged up to 1,000 times (including partially) without experiencing memory effect
Digital Cameras Photo Reviews of Sanyo Eneloop AA NiMH Pre-Charged Rechargable Batteries with Charger - 4 Pack
Customer Review: Superb!
Summary: 5 Stars
The Sanyo eneloops are a huge improvement over every other brand I've used for the last decade. I bought a dozen to start and they are so good that I just placed an order for 24 more plus another charger.
The eneloop 4-cell charger is also the best I've seen, much less owned. (OK...yes, I'm a techie and a battery freak.)
The tendency of batteries to go dead--even when they are not being used--is called "self-discharge". These days, the end of a battery's useful life is when it won't hold a charge for a reasonable period of time.
It doesn't matter how much capacity a battery has if it is dead two weeks after charging. So don't compare the eneloop's 2000mAh with the 2500mAh of other brands. Unless you ~always~ charge ~immediately~ before use, in real-life the eneloops will run your camera much longer.
From generics to the bunny, the recent 2300 to 2600mAh NiMH AA cells all get to be pretty much useless after a few charge-discharge cycles--especially using fast chargers. I have bought dozens of AA cells in the last year and it seems like I spend all my time in a vain effort to keep them charged and ready to use.
The eneloop propaganda claims an amazing 35% self-discharge per year. That is probably true for brand new cells, still in the box. And it is why they can legitimately claim that they are "pre-charged". However...
After one discharge/charge cycle it's more like 12% per month self-discharge. I measured this by comparing the time to top-off charge after 1 day idle with the time to top-off after 22 days. This is still very good.
12% per month is vastly better than the 50% per month for the top brand when nearly new and flat-dead in 2 weeks once they had been used for a while.
Also, for those concerned about the 7-8 hour charge time for the eneloop charger: You can charge eneloops in a fast charger, but it is just about guaranteed that they won't hold a charge very long afterwards. Part of the eneloop magic is the chemistry and part is the charger.
All chargers that do the job in 8 hours or less need to know when to stop charging. Most chargers don't do this very well.
The eneloop charger appears to use the dT/dt technique. It senses how fast the cells heat up while charging. This is by far the most gentle, reliable and most expensive method. More kudos to Sanyo.
More Sanyo Eneloop AA NiMH Pre-Charged Rechargable Batteries with Charger - 4 Pack reviews:
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Description of Sanyo Eneloop AA NiMH Pre-Charged Rechargable Batteries with Charger - 4 Pack
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