High mAh batteries?

rgrebby

rgrebby

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Richard
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I usually use 2500mAh batteries for flashguns but I noticed today that you can buy 4000mAh batters and even 8000.
Do these have an adverse affect on electronics or are they pretty decent?
 
I presume these are AA batteries? I can't find anything above 2850mAh from any manufacturer that I recognise. There are some higher capacity claims on ebay and the "ship direct from China" websites, but I don't think I'd trust such claims.

Anyway, usually the trade off is self-discharge time vs capacity. So a 2850mAh battery will go flat, on its own, much more quickly than a 2000mAh battery.

(Edit. I am assuming rechargeables here.)
 
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Yes, I'd be highly skeptical about claims of 4000 mAh for a AA cell.
 
rgrebby said:
I noticed today that you can buy 4000mAh batters and even 8000.
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Hi, You can stick a label on anything, but that doesn't make it a fact.;)
 
I've got a bunch of the 2900mah AA's from 7dayshop and they are a very good balance of self discharge against capacity. The wife had some in her Nissin Di866 flash, unused for over 3 months and they were absolutely fine when she turned it back on again. I've taken well over 600 shots with the same flash on one set of the batteries before the refresh time became too long. A quick look on the web recommends Mah between 2500 and 2900 for the best value overall, the Vapex ones are 2900Mah and they do some excellent chargers too.
 
Got some replacement battery's for my D700 from ebay, in the replacement form of a EN-EL4a The battery's cost £16 Delivered and they are 3000mAh and last forever! As good as my Proper Nikon one to a extent, and only 1/6 of the price!
 
Eneloops are the rechargeables to go for. They're absolutely excellent.
 
The capacity of your batteries is not going to have any real effect on your flashgun other than you should get more flashes per charge. An analogy would be fitting a larger petrol tank to your car.

I would agree with others who have said that larger capacities become less reliable. They will last less charge/discharge cycles and be less likely to meet their nominal capacity.
 
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