very useful device || battery polarity tester circuit

[@OfficialPial]

Informative

[@sm_electronics]

Welcome...

[@mpsyoutube1041]

Spw gamer 🙏🙏

[@mridulnath2468]

Simple but useful circuit

[@sm_electronics]

Thanks....

[@shofikahmmad1823]

nice video, your new subscriber 🙂

[@sm_electronics]

Thanks...

[@mpsyoutube1041]

😭😭

[@abdullahaljamil99]

ধন্যবাদ ভাইয়া।

[@sm_electronics]

ধন্যবাদ জানাই

[@myoutubeshort]

ata abar dekhar ki ase battery dekhlei bojha jabe

[@sm_electronics]

ঠিক বলেছেন ভাই,তবে circuit ta bhaloi kaj korche tai share korlam.