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Hi,
Depending on how many batteries you have, you may be better served using the cells in rotation. (@puffon
)Average battery life is 300-500 recharge cycles. By NOT depleting the cells to 3.1V (Pico "Low battery" level), you can extend the useful life of each cell.
Cheers
I
I dont smoke and vape at all at the moment. Actually since 6 months. Yesterday evening I tested the batteries. 4 of them were still like 95% full, one was 65 % and another was around 45%. So what I did was charging the 45% one to 75%.
I didnt think that most of the batteries will have 95%... Its good that the lithium ions batteries hold the charge so long.
But another thing is that I did read that you shouldn't store the batteries longterm in fully charged condition.... I did read that its easier for them to burn like that and I think there was said something about a chemical reaction when they get stored fully charged?
It seems like this battery stuff is pretty delicate if you want to handle it right. Is there maybe a charger which you can program on the computer? Because with the charger that I have now, I can only charge the batteries. I think thats a bit unpractical.
I didnt think that most of the batteries will have 95%... Its good that the lithium ions batteries hold the charge so long.
But another thing is that I did read that you shouldn't store the batteries longterm in fully charged condition.... I did read that its easier for them to burn like that and I think there was said something about a chemical reaction when they get stored fully charged?
It seems like this battery stuff is pretty delicate if you want to handle it right. Is there maybe a charger which you can program on the computer? Because with the charger that I have now, I can only charge the batteries. I think thats a bit unpractical.
Lot's of battery info on this site:
https://batteryuniversity.com/index.php/learn/article/how_to_prolong_lithium_based_batteries
https://batteryuniversity.com/index.php/learn/article/how_to_prolong_lithium_based_batteries
Be aware that batteries start to degrade once they leave the factory whether you use them or not, so rotation rather than storage is probably a better option. If you do decide to store them, the battery university recommends a storage charge for an 18650 of 3.84 volts.
Unfortunately, I don't think there is. It's an interesting idea, though. They'll last the longest if you store them in a cool (not cold) place charged to 3.7 (or perhaps 3.84, as sonicbomb says). You could set a reminder on your computer to pull them out and check them every 2 - 3 months, and charge them up to your storage point when they drop to 3.5 or so.
Now that I think about it, I'm not sure that a storage charger would be the best idea. It would mean leaving the batteries connected to a circuit the whole time, which would both increase risk and gradually deplete the charge. You also wouldn't know when it would kick in so you might not be around to supervise.
Not much to add here other than to say that batteries are "happiest" when they are stored at their median charge level, which is around 3.6 volts, +/- 0.2 volts. They should not be stored at their full 4.2 volts, and not allowed to drain to 2.5 volts, which will probably kill them.
You can try doing what I've done with mine. Buy a plug in Xmas light timer and plug your battery charger. Set the timer to turn on for about 15 minutes a day to charge the batteries. Li-ion batteries have no memory like alkalines do. My batteries are kept ready to go. Also, if you don't have a charger large enough for all, rotate the ones you do use thru a normal charger. Try to keep as many as needed for mods to be able to work daily, with a battery swap every morning. Also, letting a li-ion battery die every once in a great while won't kill it, just helps it come back to full faster, plus helps it last longer!
Um... are you discussing a charger that you can put batteries in and sort of magically "set" the charger to "top up" your batteries to a certain amount or something else? Because the former doesn't exist, and it really shouldn't. You don't want to leave your batteries "on" a charger for any long time period, at all.
Most chargers will give you some kind of indication. I have a newer, bells and whistles charger that will show me exactly what voltage my charge is at, but even my trusty old Nitecore 2 bay will give me a battery fullness indication, in units of 1/3. Etc.
You are better off just using them in my opinion. I got some lovely new batteries and am about to purge some of my first, most elderly batteries. It is time for us to "say goodbye." Etc.
Anna
Most chargers will give you some kind of indication. I have a newer, bells and whistles charger that will show me exactly what voltage my charge is at, but even my trusty old Nitecore 2 bay will give me a battery fullness indication, in units of 1/3. Etc.
You are better off just using them in my opinion. I got some lovely new batteries and am about to purge some of my first, most elderly batteries. It is time for us to "say goodbye." Etc.
Anna
IMO,,,, ya Batts are like ya Boxers..... Rotate/Change OFTEN.
For if ya don't,,,,, things gonna go to Sh---hmm hmm hmm, Crap all around sooner or/than later
many more likewise analogous ditties come to mind but....
For if ya don't,,,,, things gonna go to Sh---hmm hmm hmm, Crap all around sooner or/than later
many more likewise analogous ditties come to mind but....
18650's hold a charge for a long time, but they will drop after a while as internal resistance slowly drains the charge. Any 18650 will drop from the 4.2v level down to something like 4.15v in a week or two in storage. At least that's been my experience. Your best bet is to check voltages and top them off if needed.
That last part isn’t true.
Li-ion batteries never need to be fully cycled like NiCd or NiMH batteries do in order prevent loss of capacity.
I thought the new xtar chargers had a maintainability mode. As well as the refresh mode. For storing and reviving. I’ll have to post that model number when I find it again.
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