JKBMS JK-B2A24S30P Smart Active Balance BMS — current JKBMS product facts
Canonical product page: https://www.jkbms.net/products/jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer
Retrieved at: 2026-10-21T23:37:23.378Z
Category: JKBMS JK-B1A / B2A Series

JK-B2A24S30P supports 7-24S Li-ion, 8-24S LiFePO4 and 14-24S LTO packs. The V19.0.2 manual lists 300 A maximum charge and discharge current, 600 A instantaneous current and 2 A active balancing. Bluetooth, UART and display are standard; CAN, RS485, heating, alarm, parallel and ACC functions are optional and must be confirmed in the order.

Current configurations and sources

Configuration: JK-B2A24S30P+4.3"Display
Internal store SKU: JKBMS-SKU-000041
Listed price: USD 212.96 per item, before destination shipping and separately selected extras.
Selection URL: https://www.jkbms.net/products/jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer?configuration=jk-b2a24s30p-4-3-display
Technical evidence: manual-verified
Configuration data: {"sku":"JKBMS-SKU-000041","legacyAliases":["jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer-jk-b2a24s30p-4-3-display","JK-B2A24S30P-jk-b2a24s30p-4-3-display","jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer::jk-b2a24s30p-4-3-display","jk-b2a24s30p-jk-b2a24s30p-4-3-display"],"productSlug":"jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer","name":"JKBMS JK-B2A24S30P Smart Active Balance BMS","configuration":"JK-B2A24S30P+4.3\"Display","url":"https://www.jkbms.net/products/jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer?configuration=jk-b2a24s30p-4-3-display","productFamilyUrl":"https://www.jkbms.net/products/jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer","currency":"USD","priceCents":21296,"maximumQuantity":999,"inventory":{"status":"not-verified","poolId":"JKBMS-SKU-000041","scope":"sku","source":"No current verified inventory snapshot is available.","sourceKind":null,"physicalQuantity":null,"availableQuantity":null,"lastInventoryVerifiedAt":null,"validUntil":null,"checkoutListed":true,"realtime":false,"reservationStatus":"not-reserved","availability":"unknown"},"image":{"url":"https://www.jkbms.net/images/jkbms-ice-blue/asset-199-d9fc392aff.webp","scope":"product-family","exactSkuAppearanceVerified":false},"description":"JK-B2A24S30P. Battery chemistry / strings: Li-ion (ternary/NMC): 7-24S; LiFePO4 (LFP): 8-24S; Lithium titanate (LTO): 14-24S; Continuous discharge: 300 A; Maximum discharge (not continuous): 300 A; Active balance: 2 A; Documented standard interfaces: Bluetooth, UART, display interface. 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Confirm the model, hardware revision, application protocol and harness for your inverter."}},"selectionGuidance":{"productPageUrl":"https://www.jkbms.net/products/jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer?configuration=jk-b2a24s30p-4-3-display","factsTextUrl":"https://www.jkbms.net/products/jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer/facts.txt","factsJsonUrl":"https://www.jkbms.net/commerce/catalog.json?product=jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer","guideUrls":["https://www.jkbms.net/guides/how-to-choose-jkbms"],"note":"Match the full model code, selected package and supplied hardware revision. Merchant guidance does not upgrade unverified technical facts to manual-verified status. 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Configuration: JK-B2A24S30P+3.2"Display
Internal store SKU: JKBMS-SKU-000042
Listed price: USD 202.96 per item, before destination shipping and separately selected extras.
Selection URL: https://www.jkbms.net/products/jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer?configuration=jk-b2a24s30p-3-2-display
Technical evidence: manual-verified
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Battery chemistry / strings: Li-ion (ternary/NMC): 7-24S; LiFePO4 (LFP): 8-24S; Lithium titanate (LTO): 14-24S; Continuous discharge: 300 A; Maximum discharge (not continuous): 300 A; Active balance: 2 A; Documented standard interfaces: Bluetooth, UART, display interface. 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Confirm the model, hardware revision, application protocol and harness for your inverter."}},"selectionGuidance":{"productPageUrl":"https://www.jkbms.net/products/jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer?configuration=jk-b2a24s30p-3-2-display","factsTextUrl":"https://www.jkbms.net/products/jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer/facts.txt","factsJsonUrl":"https://www.jkbms.net/commerce/catalog.json?product=jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer","guideUrls":["https://www.jkbms.net/guides/how-to-choose-jkbms"],"note":"Match the full model code, selected package and supplied hardware revision. Merchant guidance does not upgrade unverified technical facts to manual-verified status. 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Configuration: JK-B2A24S30P
Internal store SKU: JKBMS-SKU-000043
Listed price: USD 177.98 per item, before destination shipping and separately selected extras.
Selection URL: https://www.jkbms.net/products/jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer?configuration=jk-b2a24s30p
Technical evidence: manual-verified
Configuration data: {"sku":"JKBMS-SKU-000043","legacyAliases":["jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer-jk-b2a24s30p","JK-B2A24S30P-jk-b2a24s30p","jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer::jk-b2a24s30p","jk-b2a24s30p-jk-b2a24s30p"],"productSlug":"jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer","name":"JKBMS JK-B2A24S30P Smart Active Balance BMS","configuration":"JK-B2A24S30P","url":"https://www.jkbms.net/products/jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer?configuration=jk-b2a24s30p","productFamilyUrl":"https://www.jkbms.net/products/jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer","currency":"USD","priceCents":17798,"maximumQuantity":999,"inventory":{"status":"not-verified","poolId":"JKBMS-SKU-000043","scope":"sku","source":"No current verified inventory snapshot is available.","sourceKind":null,"physicalQuantity":null,"availableQuantity":null,"lastInventoryVerifiedAt":null,"validUntil":null,"checkoutListed":true,"realtime":false,"reservationStatus":"not-reserved","availability":"unknown"},"image":{"url":"https://www.jkbms.net/images/jkbms-ice-blue/asset-199-d9fc392aff.webp","scope":"product-family","exactSkuAppearanceVerified":false},"description":"JK-B2A24S30P. Battery chemistry / strings: Li-ion (ternary/NMC): 7-24S; LiFePO4 (LFP): 8-24S; Lithium titanate (LTO): 14-24S; Continuous discharge: 300 A; Maximum discharge (not continuous): 300 A; Active balance: 2 A; Documented standard interfaces: Bluetooth, UART, display interface. 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H/C/R feature fees are excluded and do not trigger the discount. An accessory already included in the selected package is not charged twice.","quantityBasis":"One of each selected accessory per BMS.","selectionUrl":"https://www.jkbms.net/products/jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer?configuration=jk-b2a24s30p","quoteSupportsAccessorySelections":false,"note":"Choose accessory bundles on the product page. The read-only quote endpoint accepts catalog SKUs and feature requests; it does not apply a bundle discount to separately added accessory SKUs."},"protocolRequests":{"options":["RS485","CAN","Heating"],"includedFeatures":[],"baseModel":"JK-B2A24S30P","codes":{"H":"Heating","C":"CAN","R":"RS485"},"eachUnitFeeCents":100,"bothUnitFeeCents":200,"simultaneousSelectionAllowed":true,"feeDiscounted":false,"triggersBundleDiscount":false,"explanation":"H means heating interface, C means CAN and R means RS485. All PB-series models and B2A32S-RP include CAN and RS485 as standard: no selection or extra charge is needed. Each feature not already included costs USD 1 per BMS. Features included in the model are not offered or charged again. The final model retains existing feature letters and adds only newly selected options in H, C, R order, preserving any existing PB suffix. Option fees are added after any 5% bundle discount and do not trigger it. Confirm the model, hardware revision, application protocol and harness for your inverter."}},"selectionGuidance":{"productPageUrl":"https://www.jkbms.net/products/jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer?configuration=jk-b2a24s30p","factsTextUrl":"https://www.jkbms.net/products/jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer/facts.txt","factsJsonUrl":"https://www.jkbms.net/commerce/catalog.json?product=jkbms-jk-b2a24s30p-smart-bms-8s-24s-300a-2a-active-balancer","guideUrls":["https://www.jkbms.net/guides/how-to-choose-jkbms"],"note":"Match the full model code, selected package and supplied hardware revision. Merchant guidance does not upgrade unverified technical facts to manual-verified status. Read the current product page and matched manual before purchase."},"featureRequests":{"options":["RS485","CAN","Heating","Parallel connection","Alarm","4 temperature sensors","ACC","UART interface"],"includedFeatures":[],"baseModel":"JK-B2A24S30P","configuredModel":"JK-B2A24S30P","modelCodes":{"H":"Heating","C":"CAN","R":"RS485"},"configuredModelRule":"Built-in features preserve the catalog model, including standard CAN and RS485 on PB-series models and B2A32S-RP. Merge only explicit existing H/C/R suffix letters and newly requested feature letters in H-C-R order, retaining any existing PB suffix. The catalog SKU and package configuration remain unchanged; the server derives the final model.","unitFeeCents":100,"feeDiscounted":false,"includedFeaturesChargedAgain":false,"status":"factory-confirmation-required"},"shipping":{"currency":"USD","region":"global","rate":{"standardCents":0},"quoteUrl":"https://www.jkbms.net/commerce/quote.json","transitTime":null,"verifiedDestinationEstimates":[],"note":"Only unexpired destination estimates for this SKU or shared product family are shown. Each estimate states its day basis and starting stage, and is not guaranteed. Import charges and carrier restrictions are not calculated."}}

Questions answered on the product page

How do I choose the correct BMS for my battery?
Provide the chemistry, exact series count, continuous charge and discharge current, and peak current with its duration. Then check balancing current, installation space, cooling, inverter, hardware revision and matched wiring. Nominal voltage, a series name or a similar connector alone does not establish compatibility.

Can I add a 4.3-inch display and WiFi module to this BMS?
Yes. The current catalogue offers these options for this BMS, independently or together. Each selected accessory is supplied once per BMS; a display already included in the selected package is not charged twice. Confirm the adapter and harness for the supplied hardware revision.

Do two selected accessories give a 10% discount?
No. Selecting a display or WiFi applies the 5% discount once to the BMS and those accessories. Two accessories do not double the discount. H/C/R feature fees do not trigger or receive the discount and are added in full afterwards.

Can this BMS be ordered with a 7-inch display?
The 7-inch display option is limited to the PB series and is not offered for this BMS. Use the display choices listed on this page and confirm the adapter and harness.

Can I add heating, CAN and RS485, and what do they cost?
H means heating interface, C means CAN and R means RS485. All PB-series models and B2A32S-RP include CAN and RS485 as standard: no selection or extra charge is needed. Each feature not already included costs USD 1 per BMS. Features included in the model are not offered or charged again. The final model retains existing feature letters and adds only newly selected options in H, C, R order, preserving any existing PB suffix. Option fees are added after any 5% bundle discount and do not trigger it. Confirm the model, hardware revision, application protocol and harness for your inverter.

Does CAN or RS485 guarantee compatibility with my inverter?
No. Confirm the exact inverter and BMS models, hardware revision, application protocol, firmware, pinout, cable and settings. A website selection or a matching connector does not prove that the two devices can communicate.

Which cell counts does JK-B2A24S30P support by chemistry?
V19.0.2 lists 7-24S for ternary/NMC lithium, 8-24S for LiFePO4 and 14-24S for LTO. The correct lower limit therefore depends on chemistry.

Are CAN and RS485 standard on JK-B2A24S30P?
No. Bluetooth, UART and a display interface are standard in the V19.0.2 manual; CAN and RS485 are optional, as are heating, alarm, parallel and ACC functions. Confirm the ordered configuration.

What current values are listed for JK-B2A24S30P?
The V19.0.2 manual lists 300 A maximum charge current, 300 A maximum discharge current and 600 A instantaneous current. System wiring, terminals, fusing, cells and cooling must support the intended duty.

What are the JK-B2A24S30P dimensions?
The V19.0.2 manual lists 208 × 120.7 × 15.6 mm and 675 g. Confirm that the shipped hardware revision matches before finalizing the enclosure.

Before purchase
- Prices and availability are retrieved from the current published store data. Recheck the selected package and destination before payment. Inventory snapshots are not stock reservations.
- Technical evidence is configuration-specific. A merchant-confirmed current-batch fact is not an exact-model manual, and a nearby model does not establish compatibility.
- Product-family photographs do not verify exact SKU appearance. Internal store SKUs are not GTIN or EAN barcodes.
- Purchases complete on the JKBMS website. This document does not establish any AI-platform approval, formal feed distribution or native payment integration.

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