Customer Reviews

CTA Digital AA NiMH 4-Pk Batteries ( DB-24AA )

5 star:		(0)
4 star:		(1)
3 star:		(0)
2 star:		(1)
1 star:		(2)

 

 

Pros: If nothing goes wrong, NIMH type batteries are known for being an excellent rechargeable, capable of going for hundreds of charges.

Cons: I bought lots of these, and many leaked, partially breaking all three of my photography external flashes, which are $220 each. :( (I had to sell the flashes for a lot less than they were worth.)

Avoid buying these batteries for flash applications.
If you need all 4 batteries in a set to operate electronics like a flash, be aware that not all of the batteries in the set will operate with anywhere near rated capacity.
Ran tests, after noticing a low number of flashes produced by several sets of CTA batteries.
Charged 4 CTA batteries and 4 of another brand, both with similar capacity. CTA batteries fizzled after 70 flashes. Measuring the capacity of each cell individually: 1 was already drained (0%) charge, 1 was about half drained (60% charge) and 2 were at 80% charge. This was insufficient to charge the flash unit. All batteries of the other brand showed 80% capacity after 90 flashes and continued to operate for 240 flashes, with charge on all 4 batteries still at least 60% after 240 flashes.

Its hard for me to compare these batteries with anything else simply by the fact that A) they are the only rechargeable batteries I have used and B) I don't really know what to expect from rechargeable batteries for the applications I am using. Currently these batteries are in my wireless mouse and keyboard and have only been recharged probably twice in the past 4 months or so. They meet my needs so I would recommend.

Warning, these batteries don't work. They don't hold a charge for more than a day or two.

Also, the company itself (CTA) is kind of sketchy. Their support email currently has an auto-reply up which says "Due to the upcoming holiday season, we're experiencing an increase in e-mail volume." Well, Christmas was 2 months ago!