OFFICIAL JKBMS COMPARISON

Compare JKBMS series and models

Use this official comparison page to understand JK-BD, JK-PB, JK-B1A, JK-B2A, accessories, and communication products before selecting an exact model.

Series comparison

JK-BD Series

JK-BD Series

Higher-series lithium battery packs where current rating, active balancing, Bluetooth/display, and wired communication must be matched to the pack.

Confirm exact series range, current, balance current, display, harness, and application requirements.

JK-PB Series

JK-PB Series

Inverter-connected storage batteries where CAN or RS485 communication, display, and protocol checks are important.

Confirm inverter model, protocol, cable, firmware, battery voltage, and parallel requirements.

JK-B1A Series

JK-B1A Series

Compact lithium packs that need smart protection, app monitoring, and 1A-class active balancing.

Confirm current rating, cell count, chemistry, balancing needs, and installation space.

JK-B2A Series

JK-B2A Series

Lithium packs that need stronger 2A-class active balancing together with smart BMS protection.

Confirm whether stronger balancing is actually needed and still match current, wiring, and thermal conditions.

Model comparison table

This table uses product-page data from the official catalog. Open the exact product page before ordering because configuration, accessories, firmware, and quotation scope can change the final selection.

SeriesProductModelStringsCurrentBalancingCommunication
JK-BDJK BMS V20 BD6A32S15PBD6A32S15PConfirm on product page150A0.6ABluetooth, Display, UART
JK-BDJK BMS JK-BD6A24S30PJK-BD6A24S30PConfirm on product page300A0.6ABluetooth, Display
JK-BDJK BMS V20 BD6A32S10PBD6A32S10PConfirm on product page100A0.6ABluetooth, Display, UART
JK-BDJKBMS JK-BD6A24S20P Smart Active Balance BMSJK-BD6A24S20PConfirm on product page200A0.6ABluetooth, Display
JK-BDJKBMS JK-BD6A20S20P Smart Active Balance BMSJK-BD6A20S20PConfirm on product page200A0.6ABluetooth, Display
JK-BDJKBMS JK-BD6A24S15P Smart Active Balance BMSJK-BD6A24S15PConfirm on product page150A0.6ABluetooth, RS485
JK-BDJKBMS JK-BD6A20S15P Smart Active Balance BMSJK-BD6A20S15PConfirm on product page150A0.6ABluetooth, RS485
JK-BDJKBMS JK-BD6A24S12P Smart Active Balance BMSJK-BD6A24S12PConfirm on product page120A0.6ABluetooth, RS485
JK-BDJKBMS JK-BD6A24S15PD Smart Active Balance BMSJK-BD6A24S15PDConfirm on product page150A0.6ABluetooth, Display
JK-BDJKBMS JK-BD6A24S10P Smart Active Balance BMSJK-BD6A24S10PConfirm on product page100A0.6ABluetooth, RS485
JK-BDJKBMS JK-BD6A20S12P Smart Active Balance BMSJK-BD6A20S12PConfirm on product page120A0.6ABluetooth, RS485
JK-BDJKBMS JK-BD6A20S10P Smart Active Balance BMSJK-BD6A20S10PConfirm on product page100A0.6ABluetooth, RS485
JK-BDJKBMS JK-BD6A24S12PD Smart Active Balance BMSJK-BD6A24S12PDConfirm on product page120A0.6ABluetooth, Display
JK-BDJKBMS JK-BD6A20S12PD Smart Active Balance BMSJK-BD6A20S12PDConfirm on product page120A0.6ABluetooth, Display
JK-BDJKBMS JK-BD6A24S10PD Smart Active Balance BMSJK-BD6A24S10PDConfirm on product page100A0.6ABluetooth, Display
JK-BDJKBMS JK-BD6A20S10PD Smart Active Balance BMSJK-BD6A20S10PDConfirm on product page100A0.6ABluetooth, Display
JK-BDJKBMS JK-BD6A24S8P Smart Active Balance BMSJK-BD6A24S8PConfirm on product page80A0.6ABluetooth, RS485
JK-BDJKBMS JK-BD6A24S8PD Smart Active Balance BMSJK-BD6A24S8PDConfirm on product page80A0.6ABluetooth, Display
JK-BDJKBMS JK-BD6A20S8P Smart Active Balance BMSJK-BD6A20S8PConfirm on product page80A0.6ABluetooth, RS485
JK-BDJKBMS JK-BD4A8S6P Smart Active Balance BMSJK-BD4A8S6PConfirm on product page60A0.4ABluetooth, Display
JK-BDJKBMS JK-BD6A24S6P Smart Active Balance BMSJK-BD6A24S6PConfirm on product page60A0.6ABluetooth, RS485
JK-BDJKBMS JK-BD6A20S6P Smart Active Balance BMSJK-BD6A20S6PConfirm on product page60A0.6ABluetooth, RS485
JK-BDJKBMS JK-BD6A8S10P Smart Active Balance BMSJK-BD6A8S10PConfirm on product page100A0.6ABluetooth, Display
JK-BDJKBMS JK-BD4A24S4P Smart Active Balance BMSJK-BD4A24S4PConfirm on product page40A0.4ABluetooth, RS485
JK-BDJKBMS JK-BD4A20S4P Smart Active Balance BMSJK-BD4A20S4PConfirm on product page40A0.4ABluetooth, RS485
JK-BDJKBMS JK-BD4A17S4P Smart Active Balance BMSJK-BD4A17S4PConfirm on product page40A0.4ABluetooth, RS485
JK-BDJKBMS JK-BD4A8S4P Smart Active Balance BMSJK-BD4A8S4PConfirm on product page40A0.4ABluetooth, Display
JK-BDJKBMS JK-BD6A24S6PD Smart Active Balance BMSJK-BD6A24S6PDConfirm on product page60A0.6ABluetooth, Display
JK-BDJKBMS JK-BD6A24S4PD Smart Active Balance BMSJK-BD6A24S4PDConfirm on product page40A0.6ABluetooth, Display
JK-BDJKBMS JK-BD4A24S8P Smart Active Balance BMSJK-BD4A24S8PConfirm on product page80A0.4ABluetooth, Display
JK-BDJKBMS JK-BD4A24S6P Smart Active Balance BMSJK-BD4A24S6PConfirm on product page60A0.4ABluetooth, Display
JK-BDJKBMS JK-BD4A20S8P Smart Active Balance BMSJK-BD4A20S8PConfirm on product page80A0.4ABluetooth, Display
JK-BDJKBMS JK-BD4A20S6P Smart Active Balance BMSJK-BD4A20S6PConfirm on product page60A0.4ABluetooth, Display
JK-BDJKBMS JK-BD4A24S12P Smart Active Balance BMSJK-BD4A24S12PConfirm on product page120A0.4ABluetooth, Display
JK-BDJKBMS JK-BD4A20S12P Smart Active Balance BMSJK-BD4A20S12PConfirm on product page120A0.4ABluetooth, Display
JK-BDJKBMS JK-BD4A24S10P Smart Active Balance BMSJK-BD4A24S10PConfirm on product page100A0.4ABluetooth, Display
JK-BDJKBMS JK-BD4A20S10P Smart Active Balance BMSJK-BD4A20S10PConfirm on product page100A0.4ABluetooth, Display
JK-BDJKBMS JK-BD6A17S8P Smart Active Balance BMSJK-BD6A17S8PConfirm on product page80A0.6ABluetooth, RS485
JK-BDJKBMS JK-BD6A17S6P Smart Active Balance BMSJK-BD6A17S6PConfirm on product page60A0.6ABluetooth, RS485
JK-PBJK BMS V19 PB2A16S30PJK-PB2A16S30PConfirm on product page300A2ABluetooth, CAN, Heating Function, RS485
JK-PBJK BMS PB2A16S20PJK-PB2A16S20PConfirm on product page200A2ABluetooth, CAN, Heating Function, RS485
JK-PBJK BMS PB2A16S15PJK-PB2A16S15PConfirm on product page150A2ABluetooth, CAN, Heating Function, RS485
JK-PBJK BMS V19 PB2A16S10PJK-PB2A16S10PConfirm on product page100A2ABluetooth, RS485
JK-PBJK BMS PB1A16S15PJK-PB1A16S15PConfirm on product page150A1ABluetooth, CAN, Heating Function, RS485
JK-PBJK BMS PB1A16S10PJK-PB1A16S10PConfirm on product page100A1ABluetooth, CAN, Heating Function, RS485
JK-B2AJK BMS B2A32SRPB2A32SRPConfirm on product page300A2AACC, Bluetooth, CAN, Display, Heating Function, RS485, UART
JK-B2AJKBMS JK-B2A24S30P Smart Active Balance BMSJK-B2A24S30PConfirm on product page300A2ABluetooth
JK-B2AJKBMS JK-B2A24S20P Smart Active Balance BMSJK-B2A24S20PConfirm on product page200A2ABluetooth
JK-B2AJKBMS JK-B2A20S20P Smart Active Balance BMSJK-B2A20S20PConfirm on product page200A2ABluetooth, RS485
JK-B2AJKBMS JK-QB2A8S20P Parking Start Dedicated BMSJK-QB2A8S20PConfirm on product page200A2ABluetooth, Charger check, Display, Forced start switch, GPS Support, Heating Function
JK-B2AJKBMS JK-B2A8S30P Smart Active Balance BMSJK-B2A8S30PConfirm on product page300A2ABluetooth
JK-B2AJKBMS JK-B2A24S15P Smart Active Balance BMSJK-B2A24S15PConfirm on product page150A2ABluetooth, RS485
JK-B2AJKBMS JK-B2A25SRP Smart Active Balance BMSJK-B2A25SRPConfirm on product pageConfirm on product page2ABluetooth, CAN
JK-B2AJKBMS JK-B2A8S20P Smart Active Balance BMSJK-B2A8S20PConfirm on product page200A2ABluetooth, UART
JK-B1AJKBMS JK-B1A24S15P Smart Active Balance BMSJK-B1A24S15PConfirm on product page150A1ABluetooth, RS485
JK-B1AJKBMS JK-B1A20S15P Smart Active Balance BMSJK-B1A20S15PConfirm on product page150A1ABluetooth
JK-B1AJKBMS JK-B1A8S20P Smart Active Balance BMSJK-B1A8S20PConfirm on product page200A1ABluetooth, RS485
JK-B1AJKBMS JK-B1A8S10P Smart Active Balance BMSJK-B1A8S10PConfirm on product page100A1ABluetooth
AccessoriesEJ-BM16-500A Smart Battery MonitorEJ-BM16-500AConfirm on product page0-500AConfirm on product pageConfirm on product page
AccessoriesBM21 Smart Battery MonitorBM21Confirm on product pageConfirm on product pageConfirm on product pageConfirm on product page
AccessoriesBM19 Smart Battery MonitorBM19Confirm on product page0-500AConfirm on product pageConfirm on product page
AccessoriesEJ 500A Smart Battery ShuntEJ 500A Smart Battery ShuntConfirm on product page0-500AConfirm on product pageConfirm on product page
AccessoriesJKBMS V19 Version 7.0 Inch LCD Display AdapterJKBMS V19 Version 7.0 Inch LCD Display AdapterConfirm on product pageConfirm on product pageConfirm on product pageConfirm on product page
AccessoriesJKBMS 4.3 LCD General Display AdapterJKBMS 4.3 LCD General Display AdapterConfirm on product pageConfirm on product pageConfirm on product pageConfirm on product page
AccessoriesJKBMS V19 Version 4.3 LCD Display AdapterJKBMS V19 Version 4.3 LCD Display AdapterConfirm on product pageConfirm on product pageConfirm on product pageConfirm on product page
AccessoriesJKBMS Parallel Module JK-BLMK-5AJK-BLMK-5AConfirm on product pageConfirm on product pageConfirm on product pageConfirm on product page
AccessoriesJKBMS 2.5 LCD Power Board DisplayJKBMS 2.5 LCD Power Board DisplayConfirm on product pageConfirm on product pageConfirm on product pageConfirm on product page
AccessoriesJKBMS General 3.2 LCD Power Board: External DisplayJKBMS General 3.2 LCD Power Board: External DisplayConfirm on product pageConfirm on product pageConfirm on product pageConfirm on product page
AccessoriesJIKONG P-Link-CR JKBMS Serial BMS RS485 Interface BoardP-LINK-CRConfirm on product pageConfirm on product pageConfirm on product pageConfirm on product page
AccessoriesJKBMS RS485 CAN ModuleRS485-CANConfirm on product pageConfirm on product pageConfirm on product pageConfirm on product page
CablesJIKONG BMS USB-RS485-RJ45 CableJK-PBXA16SXXPConfirm on product pageConfirm on product pageConfirm on product pageConfirm on product page
CablesJIKONG BMS USB-TTL RS485 CableUSB-TTLConfirm on product pageConfirm on product pageConfirm on product pageConfirm on product page

Buyer verification links

ENGINEERING NOTES

Settle the decision, then pick the part

Each note works through one decision end to end. Where a note and a product page disagree, the product page and the written quotation are the ones that bind.
SOURCE CHECKS

Check a JKBMS source

Check a JKBMS listing against what a reseller cannot restate: the four segments of the model code, the version the board reports itself, the visible port set, and a quotation that names its own exclusions.

Read guideNAME TO PART

From brand name to part

All four spellings return the same hardware, so none of them narrows anything. This maps the term you searched to the artefact you were actually after: a model code, a manual, a firmware note or a cable.

Read guideORDERING

How ordering works

Two order paths run on this catalog. Work out which one a product uses, what shipping costs to your destination, which currency you will be charged in, and what has to be fixed before payment.

Read guideENCLOSURE DOCS

Battery box documents

Find the JKESS enclosure document that matches the format you were shipped, and work out the four cell measurements an enclosure manual assumes you already checked.

Read guidePEAK SHAVING

Sizing peak shaving

Work peak shaving out of interval data: find the billing demand window, measure the energy above the threshold, size kW and kWh separately, and stop the recharge from setting the next peak.

Read guideTHERMAL

Air or liquid cooling

Estimate what a battery cabinet actually has to reject, judge the design on cell-to-cell temperature spread rather than average temperature, and price in what each cooling system costs to keep working.

Read guideBMS ARCHITECTURE

What a BMU is

BMU means different things in different datasheets. Establish what a specific controller does from its I/O list, count units from channels rather than from kWh, and find where the interlock loop really terminates.

Read guideSOURCING

Comparing ESS quotes

Normalise C&I ESS quotations before comparing price: usable against nameplate energy, what the warranty actually measures, the line items that fall outside the scope, and who owns the integration boundary.

Read guideAPP AND BLUETOOTH

JKBMS app and Bluetooth

Connect the JKBMS app over Bluetooth, understand pairing behaviour and permissions, and work through the connection failures reported most often.

Read guideRS485 AND CAN WIRING

JK BMS RS485 and CAN wiring

Identify the RS485 and CAN ports on a JK BMS, verify the pinout against the manual for your model, and avoid the wiring mistakes that damage a port.

Read guideFIRMWARE AND PARAMETERS

JKBMS firmware and parameters

Understand how JKBMS firmware versions affect available parameters, what to record before changing settings, and how to avoid an unrecoverable configuration.

Read guideFAMILY TABLE

BD, PB, B1A and B2A side by side

One table showing what each family is built around, so a shortlist takes a minute instead of a browse.

Read guideENCLOSURE FIT

Fitting cells into an enclosure kit

Measure the cells before shortlisting a box: stack length with compression, height over the terminals, mass and rack loading.

Read guideBOARD SELECTION

Narrowing the catalog to one code

Work from the pack and the inverter rating down to a handful of codes instead of browsing the list.

Read guideBD OR PB

Which family the project needs

Local monitoring or an inverter protocol link. That question decides the family before anything else does.

Read guideBALANCE CURRENT

How much balancing a pack needs

Balance current is a rate. Match it to how fast the pack drifts and how much idle time it has to recover.

Read guideBUS CHOICE

CAN or RS485 for the link

The device at the far end decides the bus. Confirm pinout, bitrate and protocol profile before buying a cable.

Read guideHIGH-VOLTAGE

Where contactor authority sits

Split responsibilities between module slaves and the cluster master, and find what nothing in the design owns yet.

Read guidePROJECT INPUTS

What to fix before requesting a cabinet quote

The decisions that have to be settled first, and the ones that can safely stay open until the design review.

Read guide