Overview
The JKBMS B2A8S30P-HC is an active balance smart BMS for 3S to 8S battery packs, featuring CAN Bus communication and heating support. It is specified for LiFePO4, Li-ion, and LTO battery applications, with a 2A (2000mA) active balancing function and 300A continuous current rating.
Key Features
- Battery strings supported: 3S to 8S
- Active balance (Full State On), balance current: 2000mA (2A)
- Continuous current: 300A
- CAN Bus support
- Heating support
- Bluetooth built-in; supports Android / IOS phone
- Short circuit protection: support
- Same-port wiring method
- Battery pack self-powered (power supply mode: the battery pack is self-powered)
- Supports single cell voltage dropout detection
Specifications
| Model | B2A8S30P-HC |
| Supported battery chemistry | LiFePO4 / Li-ion / LTO |
| Number of battery strings | 3S to 8S |
| Continuous current | 300A |
| Power supply mode | The battery pack is self-powered |
| Single cell voltage detection range | 0-5V |
| Single cell voltage detection error | <10mV over full operating range; typical error value <5mV |
| Single cell voltage dropout detection | Support |
| Balancing | Active Balance (Full State On) |
| Balance current | 2000mA |
| Wiring method | Same port |
| Short circuit protection | Support |
| CAN Bus | Support |
| Heating | Support |
| Bluetooth function | Bluetooth built-in; support for Android / IOS phone |
| Temperature detection | -40 to 125°C |
| Total voltage detection range | 0-100V |
| Total voltage detection accuracy | <0.5%FSR (FSR = full scale) |
| Current sense shunt range | -150A to 300A |
| Current sense shunt error | <0.5%FSR |
| SoC estimation accuracy | Error <8% (operating conditions) |
| Battery remaining capacity error | Error range is less than 8% |
| Total Cycle AH cumulative value | Half of the charge/discharge value |
| Operating power consumption | <5mA (without communication) / 15mA (485/CAN) |
| Standby power consumption | <2mA |
| Operating temperature | -40 to 85°C |
| Storing temperature | -40 to 95°C |
Wiring / Interface Notes (from diagrams)
- Main terminals shown: B+, B-, P-, and C-.
- Ports/labels shown include: temperature line, GPS, and CAN/RS485.
- Cell sense leads shown for 3S-8S packs with taps labeled 1+ through 8+ and corresponding B1 to B8 markings.
- Parallel module wiring diagrams are shown for a JK-BLMK-5A “Parallel Module” (marked “For JK-B2A8S30P”, “Support Li-ion/Lifepo4/LTO”), including a diagram titled “JKBMS Parallel Module JK-BLMK-5A Wiring Diagram”.
For pre-sale compatibility checks (strings, wiring method, and communication needs such as CAN/RS485), contact support at https://tsolar.top/ or service@tsolar.top.
Details
Clear terminal and harness labeling helps confirm same-port wiring, cell taps, and communication connections before installation.
Use the parallel connection method when combining two packs, keeping B+ and P- routing consistent across both packs.
Add the JK-BLMK-5A parallel module when your setup requires a dedicated parallel interface between the BMS and system wiring.
