Heltec Energy Battery Monitor: 1mA Precision, 9-40V Range for 12/24/36V Lead-Acid Vehicle Batteries

Heltec Energy HT-BM01 HT-BM02 Lead-Acid Battery Monitor Monitor, Protect & Track Your Vehicle Battery with Ease ​ Core Functions at a Glance Real-Time Battery Insights: Track voltage (9-17V), power, temperature, and internal resistance in real time Battery Health Evaluation: Sync CCA (cold start current) data to estimate battery lifespan Driving Trajectory Playback: Record start/end points & preserve 30 days of local driving data Smart Alarm: Customize low-battery alert thresholds for automatic prompts Multi-Language Support: 10 languages (Chinese, English, Korean, etc.) for global users ​ Wide Vehicle Compatibility Works with all 9-17V lead-acid battery-powered vehicles: Cars, electric vehicles, motorcycles, trucks, RVs, golf carts, yachts ​ Effortless Connection & Use 1-Click Bluetooth Pairing: No complex setup—connect to Android/iOS/HarmonyOS phones instantly Easy APP Installation: Scan QR code or download from app stores Intuitive Dashboard: Clear display of battery status, curves, and alerts (view anytime, anywhere) ​ ​ Product Parameters ​ Why Choose Our Battery Monitor? 24/7 Protection: Avoid unexpected battery failures on the road User-Friendly: Simple operation for both beginners and professionals Versatile: Ideal for daily commutes, long trips, and vehicle fleets ​ Package Includes ​ ​