Hello friends, this is all in one battery charger. Just set voltage depends on which battery you want to charge and set charging current and charge your battery. This is very simple to make, just follow all the step and make your own all in one charger

Components:
1) 24V 3Amp Adaptor : https://roboman.in/kyay
2) XL4016 step down buck converter : https://roboman.in/h7ld
3) SPST Switch : https://roboman.in/74he
4) Voltmeter Ammeter : https://roboman.in/z753
5) 3 Pin Power Cord : https://roboman.in/cgtw
6) Banana Connector : https://roboman.in/kmrk
7) DC Socket : https://roboman.in/xezf


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