The 48300-3301-10E-EJ01-16S is a production-grade battery management system designed for 8 to 16 series-connected lithium-ion battery packs, with native hardware compatibility for both 15S and 16S configurations. Switching between string counts requires only sampling harness adjustment and parameter setup via the host software, with no hardware modification needed.
Engineered for lithium iron phosphate (LiFePO4) chemistries, this BMS delivers precision voltage and current monitoring, multi-layer safety protection, and accurate state of charge (SOC) and state of health (SOH) calculation. It meets the functional safety requirements of IEC62619 and UL1973 standards, and is suited for stationary energy storage, uninterruptible backup power and telecom power supply deployments.
The split-board architecture allows separate mounting of the indicator module, dial switch and communication port, giving pack designers flexible layout options for various cabinet and enclosure form factors.
Features
- Unique positive pole cell protection management solution, shared charge & discharge port design
- Compatible with 8S–16S series lithium cells
- Built-in 10A current limiting, both active and passive limiting modes optional
- Ultra-low sleep power consumption (£¼10μA)
- Dual balancing modes: charging balance & static standby balance; balancing current ≤ 150mA
- Multiple communication interfaces: RS485 / CAN / Parallel RS485; supports up to 20 parallel packs with automatic address assignment
- Rated for 300A continuous charge & discharge current
- Compatible with over 60 inverter brands, including Pylontech, GoodWe, Deye, Growatt, Luxpower, Suntouch, Victron, and more
Electrical Specifications
| Parameter |
Minimum |
Typical |
Maximum |
Unit |
| Nominal System Voltage |
40 |
48 |
59 |
V |
| Charge Voltage Range |
— |
54 |
60 |
V |
| Continuous Charge Current |
— |
300 |
310 |
A |
| Continuous Discharge Current |
— |
300 |
310 |
A |
| Discharge Output Internal Resistance |
— |
— |
<2 |
mΩ |
| Operating Ambient Temperature |
-20 |
25 |
70 |
¡æ |
| Storage Temperature Range |
-40 |
25 |
85 |
¡æ |
| Operating Humidity |
10 |
— |
85 |
% RH |
| Active Power Consumption |
— |
— |
<40 |
mA |
| Sleep Mode Power Consumption |
0 |
— |
50 |
Dimensions
Safety & Installation Precautions
- Battery Management Systems (BMS) shall not be deployed in series configurations.
- The maximum withstand voltage of onboard BMS power components is 100 V.
- If battery cell modules are assembled with lengthy wiring or extended copper busbars, impedance compensation must be arranged in consultation with the BMS manufacturer. Failing to do so will degrade cell consistency across the battery pack.
- No extra peripheral devices may be connected to the external switch port of the BMS. Submit technical inquiries for formal approval if additional connections are required. The manufacturer accepts no liability for BMS damage caused by unauthorized wiring on this port.
- Ensure the protection PCB does not make direct contact with cell surfaces throughout assembly to prevent cell damage. Securely fasten the BMS during installation for mechanical stability.
- Keep loose wire ends, soldering irons, molten solder and other conductive contaminants away from onboard components during assembly and regular operation, as such contact can permanently damage the printed circuit board.
- Implement adequate anti-static, moistureproof and waterproof safeguards throughout the operation lifecycle.
- Operate the BMS strictly within the design parameters and usage limits laid out in this datasheet. Exceeding published specifications will risk irreversible damage to the protection board.
- After mounting the protection board onto the battery pack, inspect all wiring connections thoroughly if there is zero output voltage or failed charging upon initial power-up.
