The leagend CM210 is a 4G and Bluetooth coulomb-counter battery monitor that monitors two battery groups at the same time, making it suitable for vehicles and systems with main and auxiliary batteries. It reports charging and discharging voltage and current, state of charge, temperature, power and remaining runtime in real time, with patented algorithms that keep long-term SOC accurate. Twenty-one days of history is retained through power loss, and remote access is available over 4G.
BATTERY MONITOR
AND COULOMB COUNTER
The leagend CM210 battery monitor is also called a coulomb counter. Its basic principle is to accurately measure and integrate the current flowing into and out of the battery, helping calculate battery capacity, state of charge and remaining runtime.

REAL-TIME BATTERY PARAMETER MONITORING
It can monitor and display battery parameters in real time, including charging/discharging voltage, charging/dis- charging current, temperature, power, ampere-hour (Ah), remaining capacity, estimated runtime, estimated charging time to full, cumulative charging electrical energy and cumulative discharging capacity.
DUAL BATTERY MONITORING
Supports simultaneous monitoring of two battery groups, making it suitable for battery systems with main and auxiliary battery monitoring requirements.
CONSISTENCY CHECK
● Compare voltage, internal resistance among multiple batteries;
● Help identify abnormal batteries and support battery grouping analysis;
MULTI-PARAMETER BATTERY MONITORING
● It can monitor and display: state of charge, voltage, current, temperature, power, capacity, remaining capacity, time to empty, time to full, accumulated charging energy and accumulated discharging capacity.;
● An external relay is required for protection functions. The relay is not included.;
PATENTED TECHNOLOGY AND ADVANCED ALGORITHMS
Patented technology and advanced algorithms help reduce accumulated errors and improve long-term SOC accuracy through battery data modeling and automatic calibration.
DATA STORAGE
Stores up to 21 days of historical data. Data will not be lost after power-off.
SPECIFICATIONS
Inquiry & Sample Request
Faqs
2. We respect our customers and are fully willing to grow together with them to achieve a win-win situation.
2.Small-batch trial orders are supported.
1. The customer provides the required drawings/detailed parameters.
2. The project is confirmed to be feasible.
3. A contract is signed with the customer and a deposit is paid.
4. Follow up on the customer's needs and make samples.
5. The customer tests and confirms the samples.
6. Mass production begins.
2.During the warranty period, we provide free repair and free firmware software updates.
2.If the defective rate exceeds the acceptable range based on the sampling inspection ratio, the factory shall re-produce the goods.
2.On-site factory visits require an appointment 7 working days in advance. We will arrange a dedicated person to receive you and provide a full tour of the production workshop, quality inspection process, warehousing and logistics. Video factory visits can be booked at any time and support bilingual explanations in Chinese and English.
2.Standard quotes are valid for 30 days, while quotes for customized products are valid for 15 days.