Battery Monitor BM2 Bluetooth 4.0 for 12V Batteries
Spend more, get more
- Aussie warranty1 year, handled locally
- Geelong supportReal people, real answers
- Same day shippingOrder by 3pm AEST
The full rundown
The BM2 clips onto your 12V battery and sends its condition to your phone over Bluetooth. Works with AGM, GEL and wet cell batteries, with live status, history and alerts in the app.
Why it works
- Real-time voltage monitoring: Stay updated on battery health at a glance.
- Smart Bluetooth alerts: Receive abnormalities directly to your phone.
- Cranking and charging checks: Automatically assesses alternator and start performance.
- 31-day history tracking: View long-term data for system insights.
- Reverse-connection protection: Prevents wiring mistakes.
- Easy installation: Simple two-wire connection to battery terminals.
What's in the box
- 1 x Battery Monitor BM2 Bluetooth 4.0
How it works
The BM2 installs directly onto your battery terminals and pairs with your smartphone via Bluetooth 4.0. The free BM2 app displays real-time voltage, cranking performance, alternator charging status, historical graphs, and usage logs. When your phone comes back into Bluetooth range, data automatically syncs and alerts trigger instantly.
What it suits
- Works with 12V AGM, GEL, and WETCELL batteries
- Suitable for campervans, caravans, 4WDs, RVs, boats, and auxiliary power systems
- App compatible with iOS 7.1+ and Android 4.3+
Fitting it
Difficulty: 1/5 (Easy). Simple two-wire install directly onto the battery.
Features
- Bluetooth 4.0 wireless monitoring
- Smart alert notifications
- Automatic cranking and charging evaluation
- 31-day data history
- Reverse-polarity protection
- Free BM2 smartphone app
- Hands-off monitoring once installed
Specifications
| Voltage Range | 9-16V DC |
| Bluetooth Version | 4.0 |
| App Compatibility | iOS & Android |
| Data Storage | 31 days |
| Connection Type | Battery terminal leads |
| System Type | 12V systems |
What owners say
Very handy good quality device.
Incredibly easy to install and registered on the Phone application no problem. A great addition to the Caravan Battery, thanks.
Very happy with monitor it performs the way you describe and the battery so far looks in good condition...
Very happy fast shipping 10/10
Good product, easy to install, app simple to use
Got it quickly easy to install they work great and thanks for the lollies ๐
great service- product works well- would recommend
G'day, we're Treklo
We're a handful of blokes in Geelong who spend our weekends in utes, vans and campers. We got sick of 12V gear that gave up a few trips in, so we started making our own and running it in our own rigs first.
Not sure what you need? Flick us an email and one of us will sort you out. No sales script, just straight answers.
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We run it ourselves
Every bit of gear goes in our own rigs before it goes on the site.
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Out the door today
Order by 3pm AEST and it leaves Geelong the same day.
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Sorted here if it plays up
1 year Aussie warranty, handled by us, not a call centre.