DIY Power Bank for Smatphone With USB DC 0.9V to 5V Voltage Step-up Boost Module

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Introduction: DIY Power Bank for Smatphone With USB DC 0.9V to 5V Voltage Step-up Boost Module

DIY Power Bank for Smatphone with USB DC 0.9V to 5V Voltage Step-up Boost Module and

TP4056 1A Li-Ion battery Charging Module, Box toy, cells laptop 18650, and few time holiday, Do it very easy and nice work and cheap, You can try do it !!!!!!!

More DIY External Power Bank Backup Battery for Smart Phone here:

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13 Discussions

That's the one I used aswell i needed the use of the output so i could just wire it directly to the usb 5v boost chip, that also left me the option to still have the inputs open for my solar panel to use that to recharge the batteries. I went rather large i have about 6x 18650 @ 3000mah

Please post circuit diagram - thank

This is a very bad idea. I see no protection module, this way you can and will damage the cells and probably yourself if they catch on fire.

here is my unit over several changes you will see the protection circuit on the battery with the 2 crock clips attached https://www.youtube.com/user/1981dasimpson/videos