How I made a power bank for my old laptop

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In this video, I have shown how I made a power bank for my old laptop, which has become almost useless due to the emptiness of its built-in battery. This Diy power bank is a very cost-effective way for old laptops. The circuit diagram & all details are included in this video.
This power bank is also charged with solar panels & runs a 12V DC light & fan for an emergency.

You can buy or check the modules that I have used --
from India - DC boost converter -
Ready lithium battery -

from USA & other - DC boost converter -
12V ready lithium battery -
12V 5 amp power supply -



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which afford Techno Review 85 Network a commission should you make a purchase.
As an Amazon Associate, I earn from qualifying purchases.

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