Powerex AA 2700mAh NiMH Rechargeable Batteries w/holder- 4 Batteries Per Pack by Maha Energy Corporation
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Digital camera reviews of Powerex AA 2700mAh NiMH Rechargeable Batteries w/holder- 4 Batteries Per Pack
Digital camera Review: Buying more PowerX batteries
Summary: 5 Stars
I currently own 8 2300 mAh batteries, purchased 2 years ago. Not one problem with them and they are still going strong, maybe not like new, but I can't measure the difference.
12 of some off-brand name AA's I have went to the great beyond and need to be replaced and am purchasing 8 2700 mAh PowerX batteries today.
I use them in my Canon580EX II and Metz 54 flash units. A portable power pack costs more, weighs more and is a PIA to carry around. These hi-mAh batteries give a big bang for the buck and the plastic carry-case's can be carried comfortably in your pockets.
Plus I use them in my Oly C-5050 and as stand-by for my Canon 5D should I run out of juice from the Lithium Canon Batteries. They are also used for my portable TV, AM/FM radio, aircraft headsets and race track radio gear.
I also have 2 Maha MH-C401FS 1 hour chargers and I can't praise them enough. You can actually tell when one cell is failing because it takes longer to charge (red light stays on) since each battery is charged independently from the others. That is also a very good buy.
I don't know anyone who uses the Sanyo brand so I can't comment. I am a pro-photographer.
Digital camera Review: Does not hold charge values
Summary: 1 Stars
I run a production business and use a lot of mobile power. I put 24 of these in service a year ago and none of them are holding a charge >1950 and two of them have shutdown completely. They are properly cycled and cared for, charged for use only once a week, but they were a huge disappointment.
I'm going to buy 40 Sanyo 2700 NIMH and see how they hold up.
so there's no doubt, I use MAHA C9000 for diagnostics, and a maha C401 and MAHA MH-C808M AA - AAA- C- D BATTERY CHARGER DELUXE 8 CELL PROFESSIONAL BATTERY CHARGER-FULL LCD DISPLAY for charging. The batteries are not left in after charge, and not exposed to temperature extremes.
I am an end user with no affiliation to any battery company.
Digital camera Review: Don't bother with other brands; buy Powerex
Summary: 5 Stars
I use LOADS of NiMH rechargeable batteries (my high-end digital cameras, my dog's flashing collars, my cordless phones, my wall clocks, mu noise-canceling headphones...) and I've found that the typical brands (Energizer and Duracell) have been cutting down on their mAh level (but not on their prices). I'm tired of the batteries not holding a charge for a reasonable time so I finally gave up and replaced all my cheaper NiMH rechargeables with Powerex and I'm glad I did. I'm not always swapping my batteries in and out of my Maha charger (another great thing to own). These batteries will cost you less in the long term and save you time.Digital camera Review: Dont buy the hype
Summary: 3 Stars
Just like others said, they don't hold a charge for long and don't last under use. My old Kodaks lasted at least 3 times longer in my trackball and keyboard. Very disappointing. One more thing why 2700mAh the max charge is 2500mAh as printed on the battery.Digital camera Review: Excellent batteries, do as stated
Summary: 5 Stars
I bought a set of 4 of these batteries to replace my worn out Walmart batteries, I also bought 3 of the MH-C9000 wizard one chargers to go with them, I have a lot of batteries to keep up and some to hopefully restore.
I use these batteries in my Canon Powershot SX100 IS and they work perfectly, meaning I can get at least 150 shots on one charge, and do videos, they outlast my other batteries 4 to 1 at least, and I read here about the self discharge problems well I keep my batteries stored in my camera for spur of the moment shots, and I can come back 2 weeks later and take photos or videos with no troubles, then put it away and come back a couple weeks later and take some more shots on the same batteries, so I see no discharge problems, at least not with my camera usage.
My Maha 2700 batteries are about 6 months old, and I don't hardly use them, when I do I use them hard, then I put them away and I grab and use them hard again.
And when I recharge them the capacity on the BI setting comes to around 2600 mah on average, well within specs.
If I can find this review a year from now I will update it with how they are still performing. But I'm ordering 8 more to replace the Walmart garbage batteries that don't last.