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Making a capacity tester would solve this. | Making a capacity tester would solve this. | ||
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? :) | ||
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 | |||
Revision as of 02:10, 18 February 2017
| Li-Ion (18650) battery capacity meter | |
|---|---|
 | |
| Participants | |
| 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? :)
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