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About Seplos Monitor
Seplos Monitor is made by a small team in France, the same people behind Pylon-Monitor.
From one Pylontech battery to twelve brands
MoniWatt started with Pylon-Monitor, a box we built to see inside our own Pylontech batteries. Owners of other brands asked for the same thing; MoniWatt is the answer.
Seplos owners are, for the most part, people who built their battery themselves. They want to see every cell, and they want it all the time, not only when they plug in a laptop. That is what we built this edition around: the sixteen cells and the balancer come first.
How we work
The box asks your battery questions and never sends it a setting. Whatever happens to the box, your system keeps running exactly as before.
Each box is prepared for the model you give us when you order and tested before it leaves the workshop. If it cannot read your equipment, you send it back within 30 days and we pay the return.
Everything works on your own Wi-Fi without an account. The Cloud is optional, off by default, and switched off again in one click.
Questions go to the people who design the box, in English, French, German, Dutch, Spanish or Italian. Usually within a day.
Our guides come from what we see when we read these systems day after day. When we are not sure about something, we say so.
Designed in France, then prepared, tested and shipped from our workshop there, with a two-year warranty.
Independent from Seplos
Seplos is a trademark of its respective owner. Seplos Monitor (MoniWatt for Seplos) is an independent product, not affiliated with, endorsed or sponsored by Seplos. We use the brand name only to say which equipment the box reads.
Contact
Write to [email protected] or use the contact form. Legal details are in the legal notice.
Keep reading
Give your Seplos pack a proper dashboard
Pre-order now. Your box ships on 10 November 2026, tested on a Seplos BMS.