[Elecraft] OT sort of. Charging Lithium Ion batteries

[K9MA]

I think pretty much all Li-ion chemistries can be charged at constant 
current to 80 percent, then at constant voltage. The last 20 percent 
takes a long time. The charging is terminated when the current drops 
below a certain limit in the constant voltage mode. This is mandatory: 
they cannot be float charged like other types. I think all the Li-ion 
charge controller chips do this.

See:

https://batteryuniversity.com/

73,
Scott K9MA

On 10/26/2019 17:39, Don Wilhelm wrote:
> I have Lithium batteries in my laptop, my KX2, my electric razor, a 
> tactical flashlight, and maybe some other things.  I use the dedicated 
> chargers for each of them.
> I think the dedicated, automatic chargers fill the batteries to 100%, 
> so there must not be a lot of caution to only charge them to 80%. 


-- 
Scott  K9MA

k9ma at sdellington.us