JKBMS Adapter Board for JK BMS Active Balancer — BMS Repair & Sampling Cable Accessory

Simplify BMS Repair & Sampling Cable Connection — JKBMS Adapter Board

The JKBMS Adapter Board is an essential tool for technicians and DIY builders working with JK BMS active balancers. It provides a standardized interface for connecting multi-plug sampling cables to the BMS protection board, making repair, testing, and reconfiguration significantly easier — no improvised wiring required.

Key Features

• ✅ 2.54mm pin header — pins with the same serial number represent the same node; alternate insertion in two rows for multi-plug sampling cables
• ✅ 2.0mm pin header — same node numbering convention; alternate insertion in two rows for multi-plug configurations
• ✅ Auxiliary power supply interface — positive on left, negative on right; required when battery pack voltage is below 40V
• ✅ Reduces wiring errors during BMS repair and cell sampling
• ✅ Compatible with JK BMS active balancer series

Important Notes

• ⚠️ When the battery pack voltage is below 40V, an external auxiliary power supply must be connected via the auxiliary power interface (positive left, negative right)
• For multi-plug sampling cables: insert plugs alternately in sequence across the two rows of pins — do not insert all plugs into the same row
• Pin numbering on both 2.54mm and 2.0mm headers follows the same node convention — match numbers carefully during assembly

Who Is This For?

• 🔧 BMS repair technicians working on JK active balancer boards
• 🔋 DIY battery builders assembling multi-cell packs with complex sampling cables
• 🏭 OEM manufacturers integrating JK BMS into custom battery systems

Package Contents

• 1× JKBMS Adapter Board

OEM / ODM & Bulk Orders

📩 For wholesale pricing, MOQ, and custom configurations, please contact us directly.