camera/gps/etc. batteries left in chargers - Kawasaki Versys Forum
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post #1 of 5 (permalink) Old 06-27-2015, 07:36 PM Thread Starter
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camera/gps/etc. batteries left in chargers

Having a discussion with a friend about whether or not batteries will lose their charge if left in the charger while said charger is unplugged.

His position is yes leaving the battery in a charger will slowly drain the battery because of the draw of the indicator lights (assuming the charger has them) and other circuitry.

My position is no other than any organic discharge that may occur it won't be accelerated if left in the charger because of the internal circuitry since there's likely a diode that prevents any discharge.

Any smart people with an answer or opinion?
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post #2 of 5 (permalink) Old 06-27-2015, 08:06 PM
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depends how the cirtrickery is built... Inside the charger there should be a diode between the battery contacts and the circuitry. this will prevent back flow of power into the charger from the battery.

This I cannot confirm - and it would also depend on the chargers. I don't use the cheap chargers for my AAA and AA eneloops. I have a Maha Powerex charger and still take the batteries out.

Best to always take batteries out of devices if they are not going to be used for a week or two - even chargers.
Most corrosion occurs from the contact of dissimilar metals of the battery ends and the charger tabs, and this could pull the power out of the battery.

Last edited by Gigitt; 06-27-2015 at 08:09 PM.
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post #3 of 5 (permalink) Old 06-27-2015, 08:14 PM
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Any smart people with an answer or opinion?


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post #4 of 5 (permalink) Old 06-28-2015, 12:11 AM
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For safety reasons, I would leave them out. What if something internal to the charger failed which allowed the battery to continue charging beyond it's capacity? You'd have a nice fireworks display with some deadly gas. I would def. remove charged batteries from the charger. They won't lose charge unless there is something wrong internally (IE charge memory like with NiCd and NiMH types).
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post #5 of 5 (permalink) Old 06-28-2015, 01:53 PM Thread Starter
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Thanks for the input
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