Recent content by daan_deurloo

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    LGABB41865 low voltage.

    I have extracted 4 18650 from a laptop pack yesterday which was in the bin. Now the charger ( Camelion ) refused to recognise them first, because voltage was 1.9v for all four. Gave them a jump with another ( protected ) 18650 and then charged just fine to about 2600mah of capacity which is...
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    Cob LED style flashlight questions

    I found a cob style rechargeable li-ion light in the bin today at work, it raised my question why would they throw something like this away. Took it home and sure didn't work. Plugged it in, tried it later without charging and it worked, but it was acting up after a while being unplugged and not...
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    Unwanted phone battery behavior

    Battery still going strong without charging it during work, it will be empty, usually empty around 9pm, so lasts 14 hours on a charge. All tho i've just seen it jumping from 9 to 3% straight away. Should calibrate it i guess. Will put a meter across the cable to measure the mah's that puts it...
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    Unwanted phone battery behavior

    New cell has been installed yesterday during my work. What can i say about a new lithium ion cell ? It lasts way longer and takes longer to charge, about 3~4 hours with the new battery in place. It was like 1.5~2 hours with the old battery. I went ahead and took a chance, took it to work with...
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    Unwanted phone battery behavior

    Update regarding the battery itself: New one is at the store, but waiting for the gasket for the back cover, since you need to use a heat gun to take it off. I have charged the phone all the way to 100% being turned off, but that didn't really do anything to the battery life itself. Same...
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    Unwanted phone battery behavior

    I must tell: Charged the phone while it was turned off. I have read that this ( might ? ) calibrate something. I think this is not true, but we will see. I'm known to the 300-500 cycle life, so yeah. I will keep an eye on it, and will do another charge capacity test in a month or so ( about...
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    Unwanted phone battery behavior

    Had some weird issue today while using Google Maps on my phone to navigate. I had 15% left on the battery and thought, i'm gonna make it, as the distance was not to far away. Like 10 min later it was on 5% and in less then 10 minutes it was dead, down to 0% and shut itself down. Is this a...
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    Dead NiZn > Discharged fully for months

    Have an upodate on these batteries. inserted them in my charger again and made 1 cycle. First one took no more then 3 mah charge and 1mah discharge. Charging again and one took over 1000mah already, weird isn't it ? Hope they do well on discharge also. They are not even heating up, so that...
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    Dead NiZn > Discharged fully for months

    Hi guys, I had some Nickel Zinc batteries in my handwarmers sitting for months, and decided to check them yesterday and found they are all at 0.2V ( Dead ), let's say 4 out of 6 take only max 3mah, what does it cause to not charge anymore ? I know you should not discharge them down to 0v (...
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    What CR2032 open circuit voltage is considered "dead"

    you are replying to a old topic. Useless in my eyes.
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    CID protection reset 18650

    Yes that's what i did to it. I will do a capacity test soon on those 3 cells, under 1000mah > dont use it anymore. My fake cell didn't even have a CID. So dangerous!
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    CID protection reset 18650

    I have new cells to use ( SAMSUNG SDI ). That low voltage cell is no good at all. As soon the charger stopped charging, voltage went way down to 3.91V. Maybe cycling it a few times helps it. I doubt it. Charger itself now even doesn't wanna charge it at all. Will mark this cell and throw it...
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    CID protection reset 18650

    Still keep an eye on the charger that does charge the dead cell with a ultra low charge current. Been like in the charger for 5 to 6 hours and still at 1.93V. Other one is still not finished charging, but it got warm during charging, but not to hot. Most of my cells get a bit warm during...
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    CID protection reset 18650

    I had 3 cells that shown no voltage at all or being recognized in my charger, found a tutorial on how to reset the CID on a 18650 cell and that worked for me. Lowest voltage was 1.0V and highest 4.05V ( second 3.0V ). These cells are quite old, let's say about 8 years old. Charging all of...
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    Another chinese 18650 toredown

    Had this very very low capacity 18650 for a while and today, i had time to teardown this fake lithium 18650 cell, and to my surprise it was about the size of a 16340 inside a 18650 can. It was like a normal lithium ion should be ( rolled ). It had no protection or vent holes whatsoever. It...
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