ANCEL BM1000 400A Bluetooth Battery Monitor with Shunt, Wireless Smart Battery Meter for RV, Solar, Marine, Off-Grid Systems, DC 10-120V Voltage, Accurate Current/Ah/SOC Tracking via App

OPTIMIZED 400A CAPACITY: Stop buying bloated specs you’ll never use. Designed for true RV, marine, and solar needs, 400A rating aligns with typical 100–300A peak loads, delivering reliable, precise monitoring without extra heat, bulk, or wasted money

±1% ACCURACY: Built from low-resistance materials and factory-calibrated at multiple points to deliver real ±1% accuracy, even with high current loads. You’ll know exactly how much power you have left, avoid over-discharge that damages batteries, and plan your energy use confidently—protecting your investment and keeping your RV, boat, or solar system running worry-free

HASSLE-FREE DIY INSTALLATION: No more crowded screws or confusing instructions. Unlike typical shunts, 400A model features dedicated one-to-one terminals so connections are obvious and secure. Save time, reduce errors, and get reliable power without the usual install headaches – even if you're wiring it yourself for the first time

BLUETOOTH CONTROL: While many battery monitors rely on small, hard-to-read wired displays or force you to buy separate Bluetooth modules, ours offers true smartphone app control(10m). With the integrated Bluetooth module and fully English, intuitive app, you get clear, real-time data on voltage, current, Ah, SOC, and power right on your phone

CONFIDENT PROTECTION: Designed with built-in reverse polarity and overload protection that anticipates real-world errors before they become expensive failures. It gives you the freedom to install with confidence, knowing even if things don’t go perfectly, your system has your back. We believe reliable energy should also be safe energy—so you can enjoy the road, the water, or off-grid living without worrying about hidden risks