I have some batterys that are about a year old and are only charging up to 4.15 instead of 4.2 but they still work ok. So when do i need to retire them? They are 14500 batteries in case that matters.
i keep them until they won't charge past 3.8 The best way the mitigate them from going bad like this is to not let them go below 3v of charge before charging....
FB is right - i am going thru my usual rotation of batteries because some of them are dead in about 2 hours although they all charge ok. Those 'sagging' batteries are destined for the trash, when i find them.
Short of using them and seeing how they perform i have not come up with a satisfactory way of measuring them, either with a multimeter or by how well they charge that allows me to predict their behaviour. So it's suck it and see!
When I was doing v-drop tests and modding, I threw an older batt into the REO for kicks. It's pretty obvious if you meter it under load. Lots of internal resistance showed up. I was getting something like a .3V drop with new batteries (.4Ω coil) and the 8 mo. old MNKEs were more like .7-.8V. So, may I suggest putting meter leads on your atty posts and firing the mod. That'll diagnose those mysterious battery innards.
The current is not going through the multimeter - you can fire all day with the leads on the posts - in voltage mode of the MM.
The 10 amps limit usually relates to amperage metering, where you put the MM in series with the atomizer to measure the actual amperage through the coil.
God, it's awful to pun in a foreign language =)
Oh, and I usually refer to your spy kids as my external backup, just in case. They even use german software, I wonder if they reversed the newest release before installing it...
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