Ignition Power, Controlled Charging: The 200A Heavy-Duty Sentinel Built for Vehicle Cranking and Parking Comfort.
JKBMS JK-QB2A8S20P Parking Start Dedicated BMS
The JK-QB2A8S20P is a premium Smart BMS engineered for 4S to 8S battery strings. With the addition of a 30V supercapacitor, the maximum starting current can reach 2500A. Additionally, it delivers a formidable 200A continuous current handling capacity, making it perfect for driving heavy vehicle cranking loads and deep-cycle accessories. By incorporating a powerful 2A active balancer, it keeps large-capacity cells perfectly aligned to eliminate voltage bottlenecks.
Original price was: $274.55.$180.00Current price is: $180.00.
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product description
Heavy-Duty Performance for Vehicle Cranking & Parking Power The JK-QB2A8S20P is specifically designed for users who need industrial-grade current handling and specialized automotive control at lower voltages. With the addition of a 30V supercapacitor, the maximum starting current can reach 2500A. While standard lithium boards struggle with high inrush currents, this specialized model is built for vehicle starting and parking applications.
Why Choose the JK-QB2A8S20P?
Integrated Charge Current Limiting: In particular, when dealing with high-output alternators, uncontrolled charging can damage a lithium battery. This BMS solves that issue by restricting input current, thereby protecting both the battery cells and your vehicle’s charging system from overheating.
Proactive 2A Active Balancing: In contrast to passive boards that slowly bleed off excess energy as heat, the integrated 2A balancer actively reshuffles charge from strong cells to weaker ones. As a result, this maximizes your usable capacity, which is critical when utilizing large-format prismatic cells.
Dedicated Vehicle Starting Logic: Because it is optimized for dual-purpose cranking and deep-cycling, this unit handles intense high-amperage surges during ignition while maintaining absolute cell safety.
Smart App & Precision Protection: Through the built-in Bluetooth and intuitive JIKONG App, you can monitor individual cell health in real-time. Moreover, you have full customization rights over the safety thresholds, allowing you to fine-tune your overcurrent, overvoltage, and thermal management parameters with ease.
additional information
| Series | 4-8S |
|---|---|
| Balance Current | 2A |
| Continuous Discharge | 200A |
| Communication | Bluetooth, Charger check, Display, Forced start switch, GPS Support, Heating Function |
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I think this BMS offers the best performance, though it would be ideal to have a manual entirely in English.
Easy to reach the seller anytime.
I upgraded to the JK-QB2A8S20P for my 24V RV solar setup, and the difference is night and day. The 200A continuous rating easily handles my high-draw inverter, and the 2A active balancer keeps my cells in perfect harmony even after a full day of heavy usage. It’s a rock-solid, professional-grade BMS that gives me total peace of mind.
Good performance under continuous operation
I built a custom lithium battery pack to replace my heavy lead-acid starter battery, and this BMS is the heart of the project. It handles the high peak currents required for cranking without even breaking a sweat. The app integration is flawless, and having that level of monitoring for an engine-starting application is a huge plus. Highly recommended for anyone doing high-power custom builds.