Used lithium of various chemistry since they first appeared in RC market. Universal recommendation for long term storage is 80%. Otherwise, charge & discharge to recommended hi/low voltage by chemistry. Maximize the life of multi-cell packs with balanced charge.Ken ke4rgSent from my Sprint Samsung Galaxy S10+. -------- Original message --------From: Don Wilhelm <donw...@embarqmail.com> Date: 10/26/19 6:39 PM (GMT-05:00) To: elecraft@mailman.qth.net Subject: Re: [Elecraft] OT sort of. Charging Lithium Ion batteries 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%.I cannot speak to the battery life advantage of charging only to 80%, but if you are charging them for storage, that may be a different matter.If you are simply charging them for use, wait until the dedicated charger displays a green light and be done with it.If you are not using a dedicated charger, look up the battery manufacturer's information for charging levels - they know their batteries better than other sources.Li-ion chemistry is different than LiFePO4, and the output voltage is different. What works for one may not apply to the other. A similar situation applies to Alkaline batteries vs. NiCad, and NiMH chemistries which we are more familiar with.Look to the battery manufacturer's information for the best source about your particular battery.73,Don W3FPROn 10/26/2019 5:33 PM, Fred Jensen wrote:> My LiFePO4 charger has a charging program to stop at about 80% and I've > been told that they like that if you're going to store them for awhile. > Don't know if that applies to Li Ion, there are a lot of lithium > chemistries these days.> > 73,> Fred ["Skip"] K6DGW> Sparks NV DM09dn> Washoe County> > On 10/26/2019 1:17 PM, David Christ wrote:>> I recently read that Lithium Ion batteries should be charged only to >> 80% unless you are going to need full capacity. Supposedly makes them >> last longer.>>>> Anyone ever heard of this?>>>> If true does this also apply to LiPO4 batteries?>>>> David K0LUM>>>>> > ______________________________________________________________> Elecraft mailing list> Home: http://mailman.qth.net/mailman/listinfo/elecraft> Help: http://mailman.qth.net/mmfaq.htm> Post: mailto:Elecraft@mailman.qth.net> > This list hosted by: http://www.qsl.net> Please help support this email list: http://www.qsl.net/donate.html> Message delivered to donwilh@embarqmail.com______________________________________________________________Elecraft mailing listHome: http://mailman.qth.net/mailman/listinfo/elecraftHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:elecr...@mailman.qth.netThis list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.htmlMessage delivered to ktalb...@gamewood.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net
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