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|Name=Li-Ion (18650) battery capacity meter | |Name=Li-Ion (18650) battery capacity meter | ||
|Skills=1337 Skillz, Arduino, Coding, Hackery, | |Skills=1337 Skillz, Arduino, Coding, Hackery, | ||
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One could buy a chinese unit from fleabay but where is the fun in that? :) | One could buy a chinese unit from fleabay but where is the fun in that? :) | ||
[[File:liion checker raw.jpg|400px]] | |||
partlist: | partlist: | ||
Revision as of 02:18, 18 February 2017
|Name=Li-Ion (18650) battery capacity meter |Skills=1337 Skillz, Arduino, Coding, Hackery, |Status=Planning |Niche=Hardware |Purpose=Infra |Picture=Heapof18650cellsnew.png |Tool=No |Category=Electronics }} As of many hackerspaces we rescue 18650 cells from old laptop batteries and other sources
We do have a charger but no good way of testing the capacity of each cell before it goes into the parts pile
Making a capacity tester would solve this. One could buy a chinese unit from fleabay but where is the fun in that? :)
partlist:
- Arduino pro mini - Display - Button - TP4056 module - 18650 battery holder - 5v relay - DC current load \ - Logic level N chan mosfet - lm385 opamp - 50k 10 turn pot - 1 Ohm 5 Watt resistorrrr