Uploaded September 2017 | Updated September 2026, 3 days ago

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The Opus BT c3100 v2.2 is an ideal companion for the build of a Powerwall. It is able to charge and discharge 18650 cells through a complete cycle by itself.
The different modes are explained in this video, so there will be no more secrets for you.
If you choose this setup or the DIY setup as in part 4, that's up to you. Myself, I'm using both in combination.

You can also view my review on the LiitoKala Lii-500
youtu.be/Gzlh6d2iaPETo

go to my YouTube Channel - Sailing and Electronics
youtube.com/channel/UCLKYCkXn8HDEUfIGO2lmCnQ