How to make battery voltage tester at home using old highlighter pen

Hello Friends !!!
In this video i am gonna show you "How To Make Battery Voltage Tester At Home". It is very easy to make rechargeable battery voltage tester at home using some materials that are easily available in market. This homemade voltage tester is rechargeable. This homemade battery voltage tester is very light weight and you can carry it everywhere. Using this homemade battery voltage tester you can measure battery voltage of any battery upto 20 V. The build quality of this homemade battery voltage tester is very good because i have used old Highlighter pen for making the body of this homemade battery voltage tester. this homemade battery voltage tester is very useful gadget for everyone.

Components
1. Digital Voltmeter
2. Type c Charging Module
3. Mini Rechargeable Battery
4. Old Highlighter pen
5. Multimeter Probe


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