• JKBMS JK-B2A8S30P 300A Smart BMS - Product Overview
  • JKBMS JK-B2A8S30P Dimensions & Parameter Chart
  • JKBMS JK-B2A8S30P-HCRPB Wiring Diagram & Port Description
  • JKBMS JK-B2A8S20P-HC APP Interface & Bluetooth Monitoring
  • JKBMS JK-B2A8S20P-HC Active Balancing Effect Comparison
  • JKBMS JK-B2A8S30P Features & Function Description
  • JKBMS JK-B2A8S30P-HCRPB Working Diagram & System Integration
  • JKBMS JK-B2A8S30P Packaging & Accessories
  • JKBMS JK-B2A8S20P-HC Application Scenarios
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JKBMS

JKBMS JK-B2A8S30P | 300A Smart BMS for High-Current RV & Backup Power | 3S-8S LiFePO4 Li-ion | 2A Active Balance

JKBMS JK-B2A8S30P | 300A Smart BMS for High-Current RV & Backup Power | 3S-8S LiFePO4 Li-ion | 2A Active Balance

$129.99 USD
$129.99 USD
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Size

Maximum Current for High-Demand Systems — JKBMS JK-B2A8S30P 300A Smart BMS for 3S–8S

The JK-B2A8S30P delivers 300A continuous current with 2A active balancing — built for high-demand RV house battery systems, large marine battery banks, and heavy-duty backup power installations. With Bluetooth and UART for LCD display monitoring as standard, full pack visibility is always at hand.

Compatible chemistries: LiFePO4 / Li-ion / LTO

Key Specifications

Parameter Specification
Model JK-B2A8S30P
Cell Configuration 3S–8S (LiFePO4 / Li-ion) · 7S–8S (LTO)
Continuous Current 300A
Active Balance Current 2A
Standard Communication Bluetooth + UART (LCD display port)
Compatible Chemistry LiFePO4, Li-ion, LTO
Protection Over-charge, Over-discharge, Over-current, Short-circuit, Over/Under-temperature

Note: LTO (Lithium Titanate) cells require a minimum of 7S configuration.

Who Is This BMS For?

  • 🛥 High-current RV & marine house battery systems (300A)
  • 🔋 Heavy-duty backup power systems for critical equipment
  • 🔦 Large off-grid power installations
  • 🏭 OEM manufacturers of 300A lithium battery packs

Compare Versions — Find the Right Fit

Feature Standard (This Model) HC Version HCR Version (HCRPB) *
Bluetooth ✅ ✅ ✅
UART (LCD port) ✅ ✅ ✅
CAN Bus ❌ ✅ ✅
Heating Film Control ❌ ✅ ✅
RS485 ❌ ❌ ✅
Soft Parallel (PLINK Module) ❌ ✅ ✅
Hard Parallel (Parallel Module) ❌ ❌ ✅
Buzzer Alert ❌ ❌ ✅

* HCR Version (HCRPB) includes Heating Film Control, CAN Bus, RS485, Parallel Module interface, and Buzzer Alert as standard.

📩 Not sure which version fits? Contact us.

Custom Configuration Available

All JKBMS products support feature customization for OEM orders — including communication interfaces, protection thresholds, balance parameters, and hardware configuration. 📩 Contact us to discuss your custom requirements.

OEM / ODM & Bulk Orders

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

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