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18650 battery charging / chargers

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Liteace:
Ive got a few battery powered tools , lamps that I want to convert to use a few 18650 batteries, One thing that is confusing me is the charging, Ive see these little charging / management PCB but none have any meter or LED to indicate what state the battery/ies are in.

I have a few pieces of equipment, lamps, phone, laptop and even the cheapest lamp has a green/red charging-charged LED indicator

Is there anything I can add to these charging / management PCB ?

aix:
It's pretty easy to find charging boards that have status LEDs.  For example (first hit on Aliexpress for "TP5100"): https://www.aliexpress.com/item/4000130857356.html

aix:
For completeness, TP4056 charging modules also seem to routinely include status LEDs.  The first two hits on Aliexpress (sorted by sales):

https://www.aliexpress.com/item/32797834680.html
https://www.aliexpress.com/item/32986135934.html

Liteace:
Thanks is the TP5100 just for a single 18650 ?

Thanks again

aix:
1S or 2S (you can of course connect multiple cells in parallel).

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