Need hotshot to develop a product. Device to stop 18650 cells charge at 80 percent.

DIY Builds
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Some kind of device that maybe you could slide in on top of cell in multiport charger that would limit voltage to 4.0! OR a charger that can be set to that. There is no charger that does this. There are a few that can stop at 3.7 volt for storage. It would triple life of battery. Sell like hotcakes. Also a device that stops dischargability of cell when it approaches safe low limit. Such as in flashlights. Anyone that has a connect or is capable of that kind of design? It would revolutionize the category. I know that the LUNA charger is capable of that on battery packs, but to gang charge cells to 80 would be great.

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One of the first google results…

https://diy500amp.com/products/smartcell-8-channel-tester-for-18650-21700-cells?srsltid=AfmBOooztGMOatdj-P5x33sNmfHgW437p7pk3cK70psoV05GYHMmMKiw

And it’s sold by our very own @DIY500AMP.COM

I think you need to work on your google-fu @Skatebored

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There’re already lotta adjustable chargers that had been in use for years.

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I have been searching, using AI, checking all the specs and descriptions, no luck.

Thanks.

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If it helps, there were several options that came up on google by typing ‘adjustable voltage 18650 21700 charger’

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U can add diodes and they have a voltage drop. I’ve done that off the end of the charger

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those would sell like crazy on ebay

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I have more coming.

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