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About EG4 Monitor
EG4 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.
EG4 banks are often large and grow over time. The question that matters on a bank like that is simple: how is each pack doing, not just the average? This edition reads every pack of the bank and puts them side by side.
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 EG4
EG4 is a trademark of its respective owner. EG4 Monitor (MoniWatt for EG4) is an independent product, not affiliated with, endorsed or sponsored by EG4. 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
See every EG4 pack in your rack, wherever you are
Pre-order now. Tested on EG4 batteries before it ships on 10 November 2026.