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About BSLBATT Monitor
BSLBATT 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.
BSLBATT batteries are made to last many years, and a long life deserves a long memory. This edition keeps a detailed record of how the battery is used, so the history is there the day you need it, for your own peace or for a warranty question.
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 BSLBATT
BSLBATT is a trademark of its respective owner. BSLBATT Monitor (MoniWatt for BSLBATT) is an independent product, not affiliated with, endorsed or sponsored by BSLBATT. 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 BSLBATT system a second pair of eyes
Order BSLBATT Monitor. Ships on 10 November 2026, tested on BSLBATT batteries.