Lithionics error code OptoLoop Cell Monitor
V9 status flag 'OptoLoop Open' (OptoLoop Cell Monitor): the cell-level monitoring circuit reports a cell above 3.80 V or below 2.50 V, or the OptoLoop/IonBus monitoring loop between the BMS and the modules is open.
What to check, and in what order, is in the app. A step-by-step flow walks this code with the pass/fail measurements, wiring schematics and procedures that go with it, and it works offline in the bay.
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- User Manual - NeverDie Advanced BMS V9 (2024)Lithionics Battery
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