First, verify that all communication cables (RS485/CAN) are securely connected and that the baud rate matches your inverter settings. If the fault indicator persists, it may be triggered by the BMS's self-protection mode due to extreme voltage or temperature fluctuations. Please restart the system or contact our technical team for a remote diagnostic report.

Unlike traditional lead-acid batteries, our Lithium cells feature ultra-low internal resistance. This ensures high energy efficiency with minimal heat generation.
Combined with our Intelligent BMS, the battery optimizes current flow to maintain a safe, cool operating temperature, significantly extending the cycle life to over 4,000+ charges.

Small amounts of dry white powder (lead sulfate) near the vent can sometimes occur due to minor outgassing during heavy charging. However, if the battery casing is bulging or there is wet leakage, the battery may be overcharged or physically damaged. ECELL’s Maintenance-Free AGM/GEL batteries are designed with advanced safety valves to minimize outgassing under normal conditions.Quality, Price & Manufacturing

Quality is guaranteed through our vertically integrated production process established in 2006. Operating from our Fuzhou production base, we conduct stringent quality control—including cell grading, aging tests, and BMS calibration—on every unit before it leaves our automated Production Line.

While Lithium (LiFePO4) has a higher initial cost, it offers a much lower Total Cost of Ownership (TCO). An ECELL Lithium battery lasts 10x longer (10+ years) and is 70% lighter than lead-acid, making it far more efficient for solar storage, telecom, and golf cart applications.

Our products are manufactured to meet global standards, including CE, UN38.3 (for safe lithium transport), MSDS, and ISO9001. We provide all necessary documentation to ensure seamless customs clearance and compliance for major markets in Europe, the Americas, and Southeast Asia.Logistics & ServiceQ: How are batteries packaged for international sea or air freight?A: As a professional manufacturer, we follow strict Dangerous Goods (DG) packaging protocols. Batteries are secured in reinforced, fire-retardant UN-rated cartons with heavy-duty palletization to prevent movement or damage during long-distance transit.

Yes. ECELL is a dedicated OEM/ODM partner. We can customize voltage, capacity, casing design, and communication protocols (Bluetooth/GPS) for specialized sectors like 5G telecommunications, cleaning vehicles, and residential ESS.