Difference between revisions of "Li-Ion battery capacity meter"

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{{Project
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|Name=Li-Ion (18650) battery capacity meter
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|Skills=1337 Skillz, Arduino, Coding, Hackery,
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|Status=Planning
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|Niche=Hardware
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|Purpose=Infra
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|Picture=Heapof18650cellsnew.png
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|Tool=No
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|Category=Electronics
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}}
 
As of many hackerspaces we rescue 18650 cells from old laptop batteries and other sources
 
As of many hackerspaces we rescue 18650 cells from old laptop batteries and other sources
  

Revision as of 03:03, 18 February 2017

Li-Ion (18650) battery capacity meter
Heapof18650cellsnew.png
Participants Danieltoo
Skills 1337 Skillz, Arduino, Coding, Hackery
Status Planning
Niche Hardware
Purpose Infra
Tool No
Location
Cost
Tool category Electronics

Li-Ion (18650) battery capacity meter

Heapof18650cellsnew.png {{#if:No | [[Tool Owner::{{{ProjectParticipants}}} | }} {{#if:No | [[Tool Cost::{{{Cost}}} | }}

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? :)

Liion checker raw.jpg

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
 
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