Using li-ion battery with tp4056 to power arduino nano

Other Hardware General Electronics
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Now have fun with you project!

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There are 2x typical TP4056 boards available.

This type have the over-discharge protection circuit:

s-l1600 (41)
s-l1600 (41)1600×1600 155 KB

This type do not have over-discharge protection:

s-l1600 (40)
s-l1600 (40)800×800 126 KB

Even if you have the second type, it may not be a problem. Many LiPo batteries have built-in protection circuit. You can often see the tiny PCB and chips inside the yellow tape. But most Li-ion batteries (18650 and other sizes) do not have any protection.

See this topic:

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If you ever need to build your own load sharing circuit, it would look like this:

Charging with load sharing C
Charging with load sharing C1234×680 81.2 KB