ANCEL BM300 Pro Battery Monitor - 6V/12V/24V Bluetooth 5.3 Car Battery Tester with Charging & Cranking Test, Alarm & IP6
£61.61 inc. VAT (£51.34 ex. VAT)
- Bluetooth 5.3 gives stable app checks without lifting the bonnet.
- Tests 6V, 12V and 24V batteries across cars, vans and motorhomes.
- Charging and cranking tests spot weak alternators before you’re stranded.
- IP6-rated housing resists dust and road grime for reliable engine-bay use.
Why Choose ProBattery
Proactive Battery Protection
Stop guessing if your vehicle will start in the morning. The ProBattery Smart Bluetooth Battery Monitor is a fit-and-forget 12v battery monitor that continuously tracks your battery's vital signs. By connecting directly to your vehicle's battery terminals, it sends real-time data to our dedicated smartphone app, allowing you to check voltage, cranking power, and charging system health without ever lifting the bonnet.
Universal Voltage & Chemistry Support
Unlike basic testers, the ProBattery monitor is designed for versatility. It seamlessly supports 6V, 12V, and 24V systems, making it the perfect 24v battery tester for trucks and a reliable lithium battery monitor for modern leisure setups. Whether you are managing a standard lead-acid car battery, an AGM motorcycle battery, or a LiFePO4 motorhome setup, our smart analyser provides accurate, chemistry-specific health reports.
Rugged, Weatherproof Design
Built for the realities of UK vehicle ownership, the ProBattery monitor features an IP67 waterproof and dustproof casing. This robust construction ensures reliable performance in harsh environments, making it ideal for marine applications, exposed motorcycle installations, and winter storage. With extremely low power consumption (just 1.5mA), it monitors your battery continuously without draining it.
Technical Specifications
- 4V - 30V DC
- 6V, 12V, 24V
- Lead-Acid (Flooded, AGM, Gel) & Lithium (LiFePO4)
- Bluetooth 5.3 (Up to 10m range)
- IP67
- < 1.5mA (Standby)
- -40°C to +80°C
- UKCA, CE, RoHS
Price Comparison
See how our price compares across UK retailers
| Retailer | Price | Delivery | Warranty |
|---|---|---|---|
| ProBattery UK (Specialist)BEST | £61.61 | FREE | 12 months + UK Support |
| eBay (est.) | £77.01 | Varies | Seller dependent |
| High Street RRP | £98.58 | N/A | Varies |
Prices checked 6 July 2026. Prices may vary.
Customer Reviews
Brilliant bit of kit. I fitted this 12v battery monitor to my campervan's leisure battery. The app is really clear and it's great being able to see exactly what charge I have left without having to use a clunky multimeter.
Bought this after getting stranded twice last winter. The battery cranking test feature is fantastic-it actually warned me my battery was weak a week before it finally died, giving me time to replace it. Fast delivery too.
Very accurate car battery analyser. I use it on my classic MG which sits in the garage a lot. Only giving 4 stars because the Bluetooth range struggles a bit through thick garage walls, but works perfectly when I'm standing next to the car.
I was looking for a lithium battery monitor for my solar setup and this is perfect. Much better than the basic testers you find online. The app interface is modern and very responsive.
Fitted it to my motorcycle. The IP67 waterproof rating is genuine-it's survived several heavy downpours on the M6. Gives me great peace of mind knowing the charging system is working properly.
Good solid lead acid battery tester. Easy to fit the ring terminals. The app sometimes takes a few seconds to connect when I first open it, but the data is spot on once it syncs.
Way better than my old handheld tester. I manage a small fleet of 3 vans and having these installed means I can just walk past them in the morning with my phone and check they are all ready to go.