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The Vatrer 10V-90V Bluetooth Battery Monitor is a shunt-based battery gauge for lithium banks in solar, RV and golf cart setups. It reads voltage, current, state of charge, internal temperature and estimated charge or discharge time on a touchscreen, and sends the same data over Bluetooth and an RS-485 port. It handles packs from 10V to 90V, so it covers 12V, 24V, 48V and higher series strings. Against basic voltage-only meters it shows far more, but it is a monitor, not a charger or a battery management system, and it does not balance cells.
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Lowest price we've seen: $89.99 on Nov 12 at Amazon. Tracked across 1 store since Nov 12.
The Vatrer 10V-90V Bluetooth Lithium Battery Monitor shows the state of a battery bank on a single touchscreen display. It works with multiple batteries connected in series or parallel, and it is designed specifically for Vatrer batteries.
The display shows charging or discharging status, battery level as a percentage, internal temperature, and estimated time to full charge or full discharge. It can track up to eight Vatrer lithium battery packs at once, showing voltage, current, internal temperature and power levels for each. This makes it easier to spot out-of-range conditions such as overvoltage or a possible short circuit.
The monitor connects by Bluetooth to Vatrer lithium battery packs, so live data can be viewed on a mobile device. An RS-485 communication port lets it connect to third-party controllers or PLCs in legacy systems such as many golf cart and industrial installations. It can be used with solar and home energy storage, RVs, golf carts, and industrial backup power such as UPS or telecom batteries.
