Recent content by n3eg

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    Best 14500 cells

    So far, the best I've seen are Vapcell.
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    Deleepow rechargeable AA lithium 1.5v batteries

    I have used NiZn cells with good results. That was my first and last try with AA 1.5 volt cells. And I will not waste my time with YouTube videos - I want charts.
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    Deleepow rechargeable AA lithium 1.5v batteries

    I got a pack of 4 with charger just for the heck of it. These are the direct recharge type with no micro USB. Put them in a Dremel 4AA tool and went to (ironically enough) cut a battery pack to salvage some 18650s. It dropped to slow speed. I took out the batteries and found one showing 0.26...
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    Will flat stacked pack and blade type batteries take over the market?

    In my world which is two-way radio, it's about 50/50. Motorola uses a lot of 18650s and prismatic in packs depending on which radio. Same with Icom, some even using 4 18500s instead of 2 18650s. In my other world which is cameras, older cameras such as Nikon/Canon use 2 18500/18650 packs...
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    LiSO2 charging?

    Never mind, this particular battery is a primary.
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    LiSO2 charging?

    I just got two of these as defibrillator rechargeable batteries in the recycle bin, and can find no information anywhere on charging these. Wikipedia says 1.7-2.5 V/cell and "shipped as 3V/cell" - but no information on charging at all. Am I right to assume they will charge to 3V/cell with...
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    Li-ion Power tool batteries

    Black & Decker, battery measures good but will not charge: Check the little black thermistor - should be 7.5k to 10k ohms. 2k or so is a bad thermistor. Also, your batteries should be within 0.1 volts of each other - 1 volt is way out of tolerance. Charge each cell separately to equalize the...
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    4680 cell lights

    You could smack someone upside the head with it like a Streamlight.
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    Terminating LiIon (Co) charge the WRONG way - question

    Is it dangerous or detrimental to terminate LiIon charge the wrong way, i.e. tapering current and floating at 4.1 volts per cell for a short time like 8 hours?
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    Dangers of holding a flashlight in your mouth.

    I guess I'm not a big mouth. I've only had Maglight AAs in my mouth with NiMH. Can't imagine biting down on an 18650 flashlight.
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    Cadex C7000/Motorola BOS help needed

    Not the caps. Definitely thermal though - from a fresh start it works for about an hour and then crashes.
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    Cadex C7000/Motorola BOS help needed

    I have a dead one of these. Cadex is VERY proprietary with their information, unwilling to release a service manual or even a schematic, and also stating it is at end-of-life and no longer repairable by them. Is there anyone who knows how to troubleshoot these? It intermittently works, but...
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    Test/review of Vapcell INR14500 L10 1050mAh (Purple) 2020

    Who is the OEM for these cells? They seem to be consistently better than all other manufacturers.
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    Dewalt 20V/60V Battery Packs

    On a related note, I've been working with Black & Decker 20V packs, which are similar but only 4 terminals. The chargers have 4 terminals and the tools use 3 terminals. I had a pack that was showing overtemp on both the tools and the charger, and found a bad thermistor in the pack. It goes...
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    Will NiMH cells do this?

    All batteries can leak under the wrong circumstances. I've had NiMH overheat and leak, NiCad white powder, alkaline crud, LiPo puffing (precursor to who knows what), NiZn leakage, and of course those Ray-O-Leak batteries that turned the contacts in our toys orange.
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