18650 Battery Charger Holder For Arduino

18650 Lithium battery holder / charger / safe box

PROBLEMS

How have you powered to your arduino? What battery do you use? Do you know how much do we have to be careful to deal with Lithium Batteries?

Supplying power may be the last step for making project such as an arduino or raspberry pi.

There are so many ways to put power into arduino but I was not happy with it here are my trials and why I didn't happy with that.

1. AA batteries

The first try was normal AA batteries. It is convenient and cheap. The problem was that it is not strong, hard to charging when the projects are running. Normally I had to detach all batteries from the holder, put them on the charger, wait for charging, put them into my project again. It is annoying thing.

2. Portable USB Charger for a phone

I used to have a portable USB Charger for my phone. It is convenient, powerful. Most my project run by this batteries. The problems was that I cannot control the power. For example, some power batteries cut the power when the power consumption is not high. Normally, smartphones consume a lot of current power. On the other hand, arduino project is not that much power demanding. So, the batteries cut off its power unexpectedly.

Solution

18650 battery + wemos 18650 battery shield v3 + 3d printing box

I'd like to make my project in very safe way. It is said that the lithium batteries are so powerful that it could make fire. The shield is also too much exposed. That is way I made a enclosing box by using 3d printer.

I shared the files on the Thingiverse (a 3d files hub)

[ 3d modeling file ]