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Turning on a Jornada 820 without working battery

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C:Amie Page Icon Posted 2018-10-24 2:53 PM
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stingraze - 2018-10-23 6:52 PM

One tip: Li-ion batteries like to be discharged too.
If it holds charge too much it gets "pregnant" as we say here in Japan.

There is a trustworthy re-celler here in Japan that I've always wanted to use to recell my Li-ion batteries... haha


That is actually not correct. You should not discharge Lithium-Ion. You are correct that you should avoid over charging it as they swell.

Keep the level between 50% and 80% and avoid charging all the way to top top or discharging all the way also.

https://www.hpcfactor.com/support/cesd/h/0015.asp
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Karpour Page Icon Posted 2018-10-24 3:54 PM
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The problem is, how would I be able to keep it at a specific level.. I have about 20 handhelds that have Li-Ion batteries, atm they're all connected to chargers.
One idea I toyed with is putting an automated power plug there that turns on for a day every 2 weeks or so, but the problem is that some of my handhelds have the habit of turning on when charging and then not going back to standby.. :/ That's a problem as I'm not home for extended periods of time.
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C:Amie Page Icon Posted 2018-10-24 6:45 PM
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Don't. Charge them to 50% and disconnect them into storage.
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stingraze Page Icon Posted 2018-10-25 12:51 AM
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C:Amie - 2018-10-24 11:53 PM

Quote
stingraze - 2018-10-23 6:52 PM

One tip: Li-ion batteries like to be discharged too.
If it holds charge too much it gets "pregnant" as we say here in Japan.

There is a trustworthy re-celler here in Japan that I've always wanted to use to recell my Li-ion batteries... haha


That is actually not correct. You should not discharge Lithium-Ion. You are correct that you should avoid over charging it as they swell.

Keep the level between 50% and 80% and avoid charging all the way to top top or discharging all the way also.

https://www.hpcfactor.com/support/cesd/h/0015.asp


I meant not discharge it fully, but discharge it once in a while (as in use it).

I found this site also:
https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

Edited by stingraze 2018-10-25 12:52 AM
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JustARegularNerd Page Icon Posted 2018-10-31 10:58 PM
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Sorry that it's been a while since I was last online and thus read all the replies, I haven't tried a hard reset like that, but I'll definitely try that today.
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