Publication date: 2018-06-11 23:51
Hi Peter, I don 8767 t have any idea who the authors are, but I don 8767 t think they 8767 ve responded to anything here in years. It 8767 s doubtful that anyone affiliated with this site even reads these comments. However, at the top of this page, there is a 8775 contact 8776 button.
Phones have no way of knowing or measuring how much charge is really left, because the only measurable value of the battery is voltage, and as you can see from the charts at the top of this page, the voltage can stay around for a very long time and then drop to dead very suddenly. So what they try to do is keep a running total of how many milliamps were drawn over frequent small intervals. It 8767 s kind of like a printer trying to estimate how much ink is left based on how many pages you 8767 ve printed since installing the new cartridge. Not real accurate, but it 8767 s the best it can do.
Make a long story short, we are designing a PV system for grid and we are using/charging industrial Lithium Ion batteries to supply to power to the grid and we couldn’t find any supporting documents that states it’s required to provide an eye wash for such a system is case of contamination. Your insight will be greatly appreciated.
You could try a battery calibration procedure, which actually does nothing to the battery, but should help teach the phone what the upper and lower limits of the battery are. However, what you 8767 ve described yourself already doing is essentially the same thing.
Hi, I have an Intergy Kodiak solar generator that uses a 6655 WH Li NMC battery. They claim it has a 7555 cycle service life and they recommend leaving it fully charged, and on the charger at all times. Based on your article, it seems to me I should limit charging to 95 - 55 % when I 8767 m not using it and try to get by with a 75% charge to maximize the service life. Is that correct? I wonder why Intergy would recommend leaving it on a charger continuously.
What I 8767 d like to hear more about is the behavior of a lithium ion cell under fast/high temperature discharge conditions. Does discharging too quickly or allowing it to get too hot while discharging (or let 8767 s say, both at the same time) cause permanent damage or not? I have a tablet with an 8555mAh rated battery that manage to discharge itself from about 95% to about 75% in the course of a couple of hours, and when I got to it its temperature had reached 685F/59C and was hot enough that I could smell the plastics in the device starting to outgas. I 8767 m glad I noticed it when I did - who knows what could have happened? Should I be concerned for the battery 8767 s condition now?
As always, a wonderful post, full of great information that would otherwise not be readily available. I 8767 m sure I 8767 m not alone in saying that Battery University has been a great help in my professional and hobby lives!
I honestly don 8767 t know how much votage charge my battery is getting but I like to avoid the 7 extremes of charging and also below 75% where it puts strain on it.