alkaline question

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zach8935
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alkaline question

i have a tone of alkaline batteries lying around. i have one of these it’s a bit nicer it automatically cuts off and wont overcharge the batteries. would it work with alkalines? or am i gonna set fire to something if i try

eebowler
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Is it an alkaline charger? if not, you’re going to spew alkaline everywhere when the cell leaks OR, it’ll just pop!

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Wilson
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Alkaline batteries are not rechargeable, unless they specifically say on the battery that they are. That technology mostly expired some years back, and the alkalines you find in stores are not rechargeable.

In any regard, the charger you show does not appear to be compatible with alkaline rechargeable batteries.

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Gj
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Do not try this at home. Do however video it for Youtube. 

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Gj wrote:

Do not try this at home. Do however video it for Youtube. 


That charger has a output of 4.2v meant for li-ions. If you put a alkaline in there something is going to give either the charger or the battery. You will more than likely have a hot leaking alkaline on your hands, if it doesn’t burst first.
.
Some alkaline’s can be charged but I would not recommend it as they usually leak shortly after. They could leak and destroy what ever device you but them in. I have played around with the idea a little, charging with a hobby charger at a very slow rate. Some brands seem to do ok for 1 or 2 charges, then there’s some that will pop and crack while charging and don’t do well at all. I have charged a energizer lithium AAA up 5 or 6 times with no leak and still works fine. Better just to buy Nimh rechargeables and a appropriate decent charger for them.
zach8935
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it was just a question. lol. i’m not even gonna try at this point. i have some Ni-Mh on the way any advice on getting the most life outta them? when to charge? from dead or when they get weak? i’ve heard they have a bad memory effect whatever that is

Don
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Memory effect is actually a myth. 

 

http://www.dansdata.com/gz011.htm

 

Keep them charged when in use, don't let them get too hot or too cold.

 

Buy Low Self Discharge (LSD) NiMH. Eneloops are the best. Top off LSD cells once a year or so if they aren't in use.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

sixty545
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There’s much more to it than that:

http://www.camlight.com/techinfo/camlight_techtips.pdf

Bort
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sixty545 wrote:
There’s much more to it than that:

http://www.camlight.com/techinfo/camlight_techtips.pdf


very good article, but i am not convinced that the discharging to 0.9V regularly is needed for NiMH, though i totally agree you should for NiCad

this thread is about alkaline so just mentioning to the OP not to assume any of this applies to alkaline
i’ve had some rechargeable alkaline, they are not that great, if you fully drain then recharge you get far less cycles so you should charge when they are down to 60-80% charge, if you don’t use the batteries for a few years they stop working (even if left fully charged), they have poor high current draw (all alkalines do), in short buy some eneloops and a smart charger and you are set (unless you have the random device that needs the higher voltage of alkalines)

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zach8935
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i went with some cheap nimh i found online. should be here in a few days. have some eneloops on the way to. just testing the waters. all my alkalines were crappy so these all sound better than them.

sixty545
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Bort wrote:
sixty545 wrote:
There’s much more to it than that:

http://www.camlight.com/techinfo/camlight_techtips.pdf


very good article, but i am not convinced that the discharging to 0.9V regularly is needed for NiMH, though i totally agree you should for NiCad

this thread is about alkaline so just mentioning to the OP not to assume any of this applies to alkaline
i’ve had some rechargeable alkaline, they are not that great, if you fully drain then recharge you get far less cycles so you should charge when they are down to 60-80% charge, if you don’t use the batteries for a few years they stop working (even if left fully charged), they have poor high current draw (all alkalines do), in short buy some eneloops and a smart charger and you are set (unless you have the random device that needs the higher voltage of alkalines)

I know this is in a wrong thread but here’s a fellow with a completely different approach (unfortunately only in german).
Www.wildflyer.de/nimh-akkus.htm

Gj
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sixty545 wrote:
Bort wrote:
sixty545 wrote:
There's much more to it than that: http://www.camlight.com/techinfo/camlight_techtips.pdf
very good article, but i am not convinced that the discharging to 0.9V regularly is needed for NiMH, though i totally agree you should for NiCad this thread is about alkaline so just mentioning to the OP not to assume any of this applies to alkaline i've had some rechargeable alkaline, they are not that great, if you fully drain then recharge you get far less cycles so you should charge when they are down to 60-80% charge, if you don't use the batteries for a few years they stop working (even if left fully charged), they have poor high current draw (all alkalines do), in short buy some eneloops and a smart charger and you are set (unless you have the random device that needs the higher voltage of alkalines)
I know this is in a wrong thread but here's a fellow with a completely different approach (unfortunately only in german). Www.wildflyer.de[/quote]

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eebowler
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zach, the eneloops were a good choice, the others… :_( What charger are you using?

My gratitude to those who are willing and able to help others (in whatever way you can)! Being human is more than just existing for yourself. Smile