Do rechargeable batteries lose their charge?

Started 5 months ago | Discussions thread
Chris 222 Senior Member • Posts: 1,691
Re: Do rechargeable batteries lose their charge?

sbw123 wrote:

Chris 222 wrote:

sbw123 wrote:

I use rechargeable Eneloop brand AAA and Duracell brand AA batteries in my Meike twin macro flash set up. In the last few days, the flashes simply stop "flashing" and shut off after a very few number of uses/flashes. When I place the Eneloops in the charger, a green LED light tells me they are full charged. Yet, fresh out of the charger, again the flashes simply stop "flashing" after only a few uses.

Do rechargeable batteries lose their ability to hold a charge after a lot of use? I don't know if this is a battery issue a flash issue. I think the batteries are just a little over 1 year old, but to be fair, I use the flash unit a lot.

Thanks,

-Steven

Hi Steven,

The answer is yes. It takes just a very little change to the chemistry inside for this to happen.

But just to be sure, what is the exact voltage you see after seeing that green LED?

The charging station I have, that came with the Duracell AA's and accommodates the AAA, doesn't have a voltage meter. The LED is either red, blinking green, or solid green.

-S

It sounds like you do not own a multi-meter. I would recommend that you buy or borrow one.

But a quick voltage read is only one part of the equation.  As far as checking the actual charge level and holding capacity, the only meaningful way to do this is to use a battery tester that applies a load to the battery.

I highly recommend ZTS products. they are made in USA and super accurate and reliable (basically a lifelong purchase): www.ztsinc.com

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Chris
Links to a few resources I published here to help my fellow photographers:
R1: BEST BACKPACK / RUCKSACK FOR HIKING PHOTOGRAPHERS (2021) https://www.dpreview.com/forums/thread/4574941
R2: Most versatile ICU (camera insert) for backpacks and other bags: https://www.dpreview.com/forums/thread/4585593
R3: How to make your own custom dividers for any photo bag or ICU (Internal Camera Unit) https://www.dpreview.com/forums/thread/4594146
R4: Reviewed: Cosyspeed mini-pouch, hand strap, waist / sling bag, powerbank https://www.dpreview.com/forums/thread/4585015
R5: Best carry on wheeled backpack you've never heard of https://www.dpreview.com/forums/thread/4446343

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