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Ultimate9 Lithium Bluetooth Battery Monitor

Monitoring the health of your battery systems is made easy with the Ultimate9® Bluetooth LITHIUM Battery Monitor (BBML) and Ultimate9® BM app.


• Voltage Test & Monitoring
• Cranking Test
• Charging Test
• 31-Day Looped History
• Record Trip Duration
• Review & store previous data
• Short circuit & reverse connection protection
• Suitable for 12 Volt systems

 *This model is compatible with LITHIUM-type batteries only*


Monitoring the health of your vehicle’s battery is made easy with the Ultimate9 Bluetooth LITHIUM Battery Monitor (BBML) and Ultimate9 BM app. 

Continuously monitoring your batteries voltage and charge status, the Ultimate9 BM app allows you to set two alarms, alerting you to low voltage situations and the need to recharge. Where data on your batteries status is collected and sent directly from this battery monitor to the BM app on your Bluetooth compatible device.

Perfect for monitoring battery's in storage, as well as off-roading, caravaning and other recreational activities, you can be confident in your battery health with the easy to install Ultimate9 Bluetooth Battery Monitor.


Monitor Installation:

Installing the Ultimate9 Bluetooth LITHIUM Battery Monitor is hassle-free; the device is installed neatly on top of your battery without the need to remove any battery terminals or reset any radio codes. Simply loosen and slide the 8mm forked cable under the nut/bolt and re-tighten. 

This device is designed to monitor 12V batteries fitted to cars, SUVs, motorcycles, boats, motor homes, caravans, camper trailers, etc.


The Ultimate9 BBM App:

Simple to use, the Ultimate9 BM app seamlessly updates data regarding battery status and is capable of monitoring up to 4 batteries at once. Each of which can have a custom name allocated to keep you organised (e.g. Main, Auxiliary, Caravan, Bike, etc.).

The app is available to download via the Apple App Store & Google Play by searching 'Ultimate9 BM' or scanning the QR code located on the Battery Monitor label.

Comprehensive instructions on the Ultimate9 Bluetooth Battery Monitor are included with purchase and can also be accessed digitally via the settings menu under ‘Hardware Installation’ in the app.


After sales support

One Year Local Warranty

30 day money back guarantee - we guarantee you'll love it or you'll get your money back

Customer Reviews

Based on 2 reviews
Dave White
Lead acid and Lithium battery monitors

Installed two weeks ago and I’m very impressed. The condition of both batteries is now relayed to my phone at prearranged times, so now I don’t have to do anymore checking myself. Magic!

Paul Wright
Excellent Service

I had an important query after the order had been placed and the back up service was excellent. Phone calls were returned promptly and it was no trouble to satisfy my query.