JK BMS · 2A+ · High-Current Board Series
600 A Board BMS for Heavy-Duty Traction & AGV
Heavy-duty board BMS for high-dynamic-load traction: 600 A continuous, 2 A active balancing, CAN/RS485/Bluetooth for 8S–24S LiFePO4 packs in forklift, AGV, aerial work platforms, and light EV.
Snapshot
Cell Config
8S – 24S
Balancing
2 A Active
Continuous Current
600 A
Communication
CAN / RS485 / BT
Overview
The High-Current Series
Situation
Your team is building a traction battery pack for forklift, AGV, or light EV applications and needs a BMS that handles sustained 600 A discharge, survives motor inrush surges up to 1800 A, and talks to the traction motor controller over CAN – all within the vehicle battery compartment.
The Challenge
Standard 100–200 A BMS units trip on overcurrent during normal traction duty or need bulky external contactors that do not fit the compartment. Without proper CAN integration, the BMS cannot coordinate protection with the motor controller, leading to nuisance shutdowns and reduced vehicle uptime.
How do you find a 600 A BMS for heavy-duty traction applications with active balancing, CAN bus integration, and vibration-resistant packaging?
Our Answer
SSLBATT High-Current Series BMS delivers 600 A continuous with 1800 A peak surge, 2 A active balancing, and CAN 2.0B (J1939-compatible) communication for direct traction controller integration. The reinforced MOSFET bank, high-current busbars, and vibration-rated assembly suit 8S–24S LiFePO4 packs in forklift, AGV, aerial work platforms, and light EV – with factory parameter alignment before sampling.
Traction-Grade Power Handling
600 A continuous with 1800 A peak surge for 3 seconds handles motor inrush events that trip standard BMS units. Reinforced MOSFET bank and busbars distribute heat evenly under sustained load.
Motor Controller Integration
CAN 2.0B with J1939-compatible protocol maps SOC, voltage, current, temperature, and fault status to the vehicle ECU. RS485 and Bluetooth cover telemetry and diagnostics.
Vibration-Resistant Packaging
Board form factor with vibration-rated mounting, reinforced connectors, and conformal coating against dust, moisture, and mechanical shock in traction environments.
Where It Fits Best
View specifications
| Application | Why it fits |
|---|---|
| Forklift & Material Handling | Sustained 600 A discharge handles lift motor demand and fast-charge cycles. |
| AGV & Mobile Robotics | Compact footprint with CAN integration for automated vehicle control systems. |
| EV Traction & LSEV | Motor inrush tolerance and vibration-rated assembly for on-road duty. |
| Heavy-Duty Industrial | High-current busbars and reinforced MOSFET bank for repeated peak loads. |
JK BMS 2A+ Model Matrix
B2A (2A) and relay B5A (5A) high-current balancing tiers.
View specifications
| Model | Balance Current | Continuous Current | LiFePO4 Strings | LTO Strings | Control Port | Current Sensing | OCP Adjustable |
|---|---|---|---|---|---|---|---|
| B2A 20S20P | 2 A | 200 A | 8S–20S | 12S–20S | Common Port | — | 10–200 A |
| B2A25S-RP (Relay) | 2 A | Up to 600 A | 6S–25S | 9S–25S | 12V Relay split port | Shunt 500 A 75mV | 10–500 A |
| B2A25S-XP (Relay) | 2 A | Up to 600 A | 6S–25S | 9S–25S | 12V Relay split port | Shunt 500 A 75mV | 10–500 A |
| B5A4S-XP (Relay, 12V Battery) | 5 A | Up to 600 A | 4S | — | 12V Relay split port | Shunt 500 A 75mV | 10–500 A |
| B5A8S-XP (Relay, 24V Battery) | 5 A | Up to 600 A | 8S | — | 24V Relay split port | Shunt 500 A 75mV | 10–500 A |
Engineering Guidance (Traction Pack)
Architecture decisions
View specifications
| Design item | Why it matters |
|---|---|
| Series count and pack voltage | Must match motor controller input range and BMS threshold configuration. |
| Busbar and cabling gauge | Incorrect gauge creates voltage drop and thermal risk at 600 A continuous. |
| Mechanical mounting & vibration isolation | Protects BMS board and connections in high-vibration traction environments. |
Choosing the Balance Tier for Traction
View specifications
| Tier | Balance Current | When to choose |
|---|---|---|
| B2A (2A) | 2 A active balance | |
| B5A Relay (5A) | 5 A active balance |
Engineering Data
Specification Snapshot
Procurement-friendly parameters for fast vendor qualification. Request the PDF datasheet for electrical curves and compliance documents.
SKU
HC-BMS-600
Voltage Range
8S–24S (25.6–76.8 V)
Continuous Current
600 A
Peak Surge
1800 A (3s)
Active Balancing
2 A
Communication
CAN / RS485 / BT
Operating Temp
-20 °C to 70 °C
Cell Type
LiFePO4
Protection Class
IP65 (Enclosed)
Power Supply
30–100 V DC
Voltage Accuracy
±5 mV
OCP Range
10–500 A
Standby Draw
≤ 1 W active / 0.2 mW powered off
Safety Layer
BMS & Safety
Protection and compliance engineered to prevent the failures that trigger warranty claims, logistics delays, and downtime in traction applications.
Overcharge Protection
Per-cell voltage ceiling enforcement with balancing activation.
Over-discharge Cutoff
Programmable low-voltage disconnect prevents cell damage under deep discharge.
Short Circuit Protection
<200 µs response time for load-side faults.
Overcurrent Protection
Programmable threshold with dual time-window response; current-limit strategy absorbs motor inrush without nuisance trips.
Thermal Protection
NTC monitoring with programmable derating curve; MOSFET bank protected under sustained 600 A load.
Low-temp Charge Protection
Blocks charge below 0 °C to prevent cell damage.
CAN Fault Reporting
Real-time fault codes via CAN bus to the traction controller.
Cell Open-wire Detection
Identifies sense wire faults before cell imbalance occurs.
Compliance (CE, RoHS)
CE and RoHS documentation standard; UKCA and UL-recognized components aligned on request. Poland Local Warehouse 3–7 day DDP for qualified EU programs.
Control Integration
Motor Controller / Charger Communication
Motion batteries talk to the motor controller, not a grid inverter. CAN 2.0B (J1939-compatible) and RS485 map SOC, voltage, current, temperature, and fault status to the vehicle ECU or fleet EMS. Share your controller model and we align the protocol before sampling.
Visual Context
Engineering Visuals
Where It Wins
Applications
Match this SKU to proven deployment contexts.
Forklift Fleets
Sustained 600 A for lift motors and fast-charge cycles.
AGV & Mobile Robotics
CAN-integrated BMS for automated vehicle fleets.
EV Traction & LSEV
Motor inrush-rated with vibration-tolerant packaging.
Heavy Industrial
Reinforced busbars for repeated peak load demand.
FAQ
Frequently Asked Questions
What cell configuration and voltage range does this BMS support?
What cell configuration and voltage range does this BMS support?
Can this BMS handle peak motor inrush currents?
Can this BMS handle peak motor inrush currents?
Which communication protocols are supported?
Which communication protocols are supported?
What is the lead time and MOQ?
What is the lead time and MOQ?
Real Photos
Factory & Product Gallery
Request Quote
Request OEM Quote
Factory-direct pricing, MOQ details, and OEM/ODM timelines for the High-Current Series Traction BMS.
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