1 / 2JKBMS JK-BD Series
BD smart BMS with active balancing for higher-voltage lithium packs
JKBMS JK-BD4A20S8P Smart Active Balance BMS is a JK BD-series smart active-balance BMS listed from $82.59. It is suited to 8-20S lithium battery packs and should be selected by cell count, discharge current, balance current, and required communication interface.
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Product details
SELECTION HELP
Check strings, current, active balancing, display, and communication requirements before comparing models.
Read guideSERIES COMPARISONCompare series roles, storage applications, display needs, and inverter communication requirements.
Read guideCOMMUNICATION GUIDESeparate physical interface choice from inverter protocol and system compatibility requirements.
Read guideMODEL-SPECIFIC APPLICATION NOTES
JKBMS JK-BD4A20S8P Smart Active Balance BMS belongs to the JK-BD series and is best reviewed for higher-series lithium battery packs where current rating and active balancing must match the real load.
The listed battery string range is 8-20S. The current reference is 80A. The active-balancing reference is 0.4A.
For communication planning, this page lists Bluetooth, Display; protocol, pinout, cable, firmware, and inverter or service-tool settings still need confirmation.
Model planning
Use this summary to confirm whether JKBMS JK-BD4A20S8P Smart Active Balance BMS fits the battery system before checkout, quotation, or installation.
System fit checks
Use these checks before selecting a configuration, requesting a quote, or installing the product in a battery system.
Confirm the battery pack is within 8-20S. Match the 80A continuous discharge rating to the inverter, load, wiring, and thermal design. Use the 0.4A active-balancing class as one selection input, not as a substitute for good cell matching.
The listed communication options are Bluetooth, Display. Confirm protocol, pinout, baud rate or CAN bitrate, firmware, and inverter compatibility before installation.
Use suitable fusing, cable size, torque, ventilation, insulation, and commissioning checks for the final battery system.
Verify this product on https://www.batteryboxkit.com/shop/jk-bd4a20s8p, confirm the official domain is www.batteryboxkit.com, and use zhou@jkess.com for quotation checks before bulk payment or project procurement.
Buying notes
Practical points buyers raise before paying: where the product comes from, what documentation to check first, how it ships, and how the price is set.
This catalogue is operated by JKBMS Electronic Technology Co.,Ltd rather than a reseller, so model configuration, documentation, and warranty questions are answered by the manufacturer instead of being referred upstream.
Parameter sets and connector assignments differ between model families and hardware revisions. Download the manual for this exact model and check it against your pack before commissioning rather than relying on a similar model.
JKBMS boards, monitors, displays, and accessories ship free worldwide. Delivery time depends on destination and customs handling rather than on the order value.
Each configuration is priced separately and the total is re-checked on the server at checkout, so the price shown for the selected SKU is the price charged. Larger quantities are quoted separately through a bulk enquiry.
Product FAQ
JKBMS JK-BD4A20S8P Smart Active Balance BMS is listed for jkbms jk-bd series. JKBMS JK-BD4A20S8P Smart Active Balance BMS is a JK BD-series smart active-balance BMS listed from $82.59. It is suited to 8-20S lithium battery packs and should be selected by cell count, discharge current, balance current, and required communication interface.
JKBMS hardware is manufactured by JKBMS Electronic Technology Co.,Ltd. BatteryBoxKit is the stocking storefront operated by that company, so this listing ships from held stock. Quotations and order confirmations come from zhou@jkess.com.
Confirm model JK-BD4A20S8P, 80A, 0.4A, communication Bluetooth, Display against the battery pack, inverter, wiring, and project requirements before ordering.
Selected JKBMS smart BMS model or display bundle; Model-specific wiring harness and standard accessories supplied with the product; Documentation or setup references supplied with the selected package. Not included: Battery cells, battery enclosure, inverter, charger, and external power cabling; External contactors, breakers, fuses, and installation hardware unless specified. The final selected configuration and written quotation remain the reference for supply scope.
Purchasable JKBMS products can be ordered from the product page. Verify the model, configuration, destination, and official sales contact before bulk purchasing or project use. Return and shipping rules are published at https://www.batteryboxkit.com/company/policies.
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