--- product_id: 551908556 title: "BM300 Bluetooth Battery Monitor - Automotive Voltmeter with Charging, Cranking System Test and Alarm - 12V Compatible for Solar Power Systems, RVs, Motorcycles, Boats, Cars, and Trucks" brand: "ancel" price: "$129.46" currency: USD in_stock: true reviews_count: 7 category: "Ancel" url: https://www.desertcart.us/products/551908556-bm300-bluetooth-battery-monitor-automotive-voltmeter-with-charging-cranking-system store_origin: US region: United States of America --- # Bluetooth real-time monitoring 12V, 100-2000CCA battery range Smart alarm & safety alerts BM300 Bluetooth Battery Monitor - Automotive Voltmeter with Charging, Cranking System Test and Alarm - 12V Compatible for Solar Power Systems, RVs, Motorcycles, Boats, Cars, and Trucks **Brand:** ancel **Price:** $129.46 **Availability:** ✅ In Stock ## Summary > 🔋 Stay charged, stay confident — never get caught powerless again! ## Quick Answers - **What is this?** BM300 Bluetooth Battery Monitor - Automotive Voltmeter with Charging, Cranking System Test and Alarm - 12V Compatible for Solar Power Systems, RVs, Motorcycles, Boats, Cars, and Trucks by ancel - **How much does it cost?** $129.46 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/551908556-bm300-bluetooth-battery-monitor-automotive-voltmeter-with-charging-cranking-system) ## Best For - ancel enthusiasts ## Why This Product - Trusted ancel brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Powerhouse:** Lightweight 3.2 oz design fits anywhere, delivering seamless monitoring within 33 feet. - • **Versatile Compatibility:** Supports Flooded, AGM, GEL, EFB batteries across cars, RVs, boats, motorcycles, and solar systems. - • **Ultimate Safety Assurance:** Built-in overload breaker, reverse polarity protection, and fireproof casing keep you secure. - • **Stay Ahead with Smart Alerts:** Instant app notifications warn you of battery failures or abnormal voltage to avoid costly downtime. - • **Precision Battery Health Insights:** Track voltage, charging, and cranking with 99.5% accuracy via Bluetooth app. ## Overview The ANCEL BM300 is a compact, Bluetooth-enabled 12V battery monitor designed for 100-2000CCA batteries. It offers precise voltage, charging, and cranking system tests with real-time mobile app tracking. Featuring advanced safety protections and smart alarm notifications, it supports a wide range of battery types and vehicles, making it an essential tool for proactive battery management and peace of mind. ## Description Comprehensive 12V battery analysis with voltage, charging, and cranking tests. Bluetooth connectivity allows real-time monitoring and issue identification via mobile app. Review: handy for campervan leisure battery - installed in about 5 minutes - bluetooth connected 1st time really easy and there it was the voltage of my leisure battery handy for when all the kids are using my battery to charge all there phones - it enables you to not damage the battery and run it too low - ok so it has a crank setting which i have no need for on a leisure battery but you can set it to notify you when battery gets low which for me after destroying two AGM batteries because we used to run them flat as i had no way of telling pre my solar kit is fantastic - good but of kit for not a lot of money. IF YOU HAVE A CAMPER THIS IS SOMETHING YOU NEED Review: Simple to fit, works reliably. - This is a well made unit that is quick and easy to fit and works well with the app. The only downside are the instructions but it's easy enough to figure out without them. Just make sure you download the correct app and it will work seamlessly. ## Features - 🔋【Automotive Car Battery Monitor】 ANCEL BM300 battery tester is designed for all 12V 100-2000CCA batteries. Which provides overall analysis of batteries’ health, such as, Voltage testing, charging testing, crank testing and trip recording can be gotten more than 99.5% reports via Bluetooth connection by App “ANCEL Battery Monitor". Allows users to track battery dynamics at any time to more accurately identify and resolve issues - 🔋【Safety & Alert Function】BM300 built-in electrical overload circuit breaker with reverse polarity protection, ensuring the user's personal safety during operation; The shell is made of fireproof material, more resistant to high temperature; Most importantly, it also has an exception alarm function, which will notify you through the APP when the battery failure or voltage and power abnormal, reducing your concerns in this regard - 🔋【Compact and convenient】 3.2 ounces of upgraded version of the car battery tester's appearance is compact, which is convenient for carrying and saving storage space. When you connect it to the battery, you can check the battery related data on your mobile phone as long as it is in 33 feet. No matter what the weather can be tracked to the battery in time, it is a very good choice for car lovers! - 🔋【Wide Application】Our car battery monitor supports regular flooding, AGM flat, AGM spiral, GEL and EFB batteries for cars, trucks, hybrids, suv's, boats, RV's, motorcycles, and even solar power systems. It can meet the needs of batteries of different models - 🔋【 Notice】When you download our ANCEL BM300 APP (APP name is ANCEL Battery Monitor), you may receive a warning stating that the APP for this device contains malware, please ignore this message, our APP is very safe ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | ANCEL | | Part number | BM300 | | Item Weight | 82 g | | Product Dimensions | 11 x 2.5 x 13 cm; 82 g | | Item model number | BM300 | | Colour | black | | Style | Compact | | Power source type | Corded Electric | | Voltage | 12 Volts | | Item Package Quantity | 1 | | Measurement Accuracy | ANCEL Battey Tester | | Included components | Battery Monitor bluetooth | | Batteries included? | No | | Batteries Required? | No | | Battery Cell Type | Lithium | ## Product Details - **Brand:** ANCEL - **Colour:** black - **Item dimensions L x W x H:** 11 x 2.5 x 13 centimetres - **Power source:** Corded Electric - **Style:** Compact ## Images ![BM300 Bluetooth Battery Monitor - Automotive Voltmeter with Charging, Cranking System Test and Alarm - 12V Compatible for Solar Power Systems, RVs, Motorcycles, Boats, Cars, and Trucks - Image 1](https://m.media-amazon.com/images/I/61rjrDtzapL.jpg) ## Questions & Answers **Q: Is it possible to see how much power the battery has used ?** A: ANCEL BM300 has a 30-day data historical record, which allows you to check how much electricity has been used through each record. **Q: Can Android or iOS device directly monitor local data ?** A: iOS devices can monitor directly, while Android devices require authorization. **Q: What about the stability of Bluetooth connection ?** A: Enable location access within a 33 ft range of the device, allowing continuous monitoring of battery data on your phone. **Q: Can multiple batteries be monitored at the same time?** A: No, BM300 can only monitor one battery, If you want to test another battery, delete the current one and test the battery data you want to test. **Q: Is the voltage data accurate?** A: The data with an accuracy of more than 99.5%, with intelligent calculations that make the data more accurate the longer you monitor it. ## Customer Reviews ### ⭐⭐⭐⭐⭐ handy for campervan leisure battery *by D***P on 31 May 2024* installed in about 5 minutes - bluetooth connected 1st time really easy and there it was the voltage of my leisure battery handy for when all the kids are using my battery to charge all there phones - it enables you to not damage the battery and run it too low - ok so it has a crank setting which i have no need for on a leisure battery but you can set it to notify you when battery gets low which for me after destroying two AGM batteries because we used to run them flat as i had no way of telling pre my solar kit is fantastic - good but of kit for not a lot of money. IF YOU HAVE A CAMPER THIS IS SOMETHING YOU NEED ### ⭐⭐⭐⭐⭐ Simple to fit, works reliably. *by J***N on 27 October 2023* This is a well made unit that is quick and easy to fit and works well with the app. The only downside are the instructions but it's easy enough to figure out without them. Just make sure you download the correct app and it will work seamlessly. ### ⭐⭐⭐⭐⭐ Review *by S***A on 1 December 2025* Is een gemakkelijke manier om de status van je startaccu te controleren. ## Frequently Bought Together - ANCEL BM300 12V Battery Monitor, Bluetooth 4.0 Automotive Voltmeter with Charging, Cranking System Test & Alarm - Compatible for Solar Power Systems, RVs, Motorcycles, Boats, Cars, and Trucks - ANCEL BA101 Car Battery Tester, 12V Digital Automotive Alternator Meter Diagnostic Tool,100-2000 CCA Load Capacity, Charging & Cranking Analyzer for Truck, Boat, RV, Marine Vehicle, and More - NOCO Boost GB40: 1000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - For 6.0L Gas and 3.0L Diesel Engines --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/551908556-bm300-bluetooth-battery-monitor-automotive-voltmeter-with-charging-cranking-system](https://www.desertcart.us/products/551908556-bm300-bluetooth-battery-monitor-automotive-voltmeter-with-charging-cranking-system) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-19*