{"product_id":"10s-42v-10a-charge-only-bypass-bms","title":"10S 42V 10A Charge-Only Bypass BMS","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003e10S 10A Charge-Only Bypass BMS\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eThe TorqueBoards 10S Charge-Only BMS is designed for compatible \u003cstrong\u003e10-series lithium-ion battery packs\u003c\/strong\u003e using a bypass discharge configuration.\u003c\/p\u003e\n\u003cp\u003eIn a charge-only setup, the BMS monitors the individual battery groups, provides balancing, and manages the charging path. The battery’s main discharge current bypasses the BMS and connects directly to the vehicle’s power output.\u003c\/p\u003e\n\u003cp\u003eThis design is commonly used in electric skateboard and DIY electric-vehicle battery packs where high discharge current is required, but the BMS is used specifically for charge protection and cell-group management.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for 10S lithium-ion battery packs\u003c\/li\u003e\n\u003cli\u003eCharge-only bypass configuration\u003c\/li\u003e\n\u003cli\u003eMaximum charging current: 10A\u003c\/li\u003e\n\u003cli\u003eMonitors individual series groups through the balance connector\u003c\/li\u003e\n\u003cli\u003eSupports cell balancing\u003c\/li\u003e\n\u003cli\u003eSeparate P− and B− connections\u003c\/li\u003e\n\u003cli\u003eCapped NTC lead\u003c\/li\u003e\n\u003cli\u003eEnclosed construction\u003c\/li\u003e\n\u003cli\u003eSuitable for electric skateboard and DIY EV battery builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCharge-Only Bypass Configuration\u003c\/h2\u003e\n\u003cp\u003eThis BMS is intended to control the battery’s charging connection rather than carry the vehicle’s main discharge current.\u003c\/p\u003e\n\u003cp\u003eIn a typical bypass configuration:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eB−\u003c\/strong\u003e connects to battery-pack negative\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eP−\u003c\/strong\u003e connects to charger negative\u003c\/li\u003e\n\u003cli\u003eCharger positive connects directly to battery-pack positive\u003c\/li\u003e\n\u003cli\u003eThe vehicle’s main discharge negative connects directly to battery negative\u003c\/li\u003e\n\u003cli\u003eThe balance connector monitors each of the 10 series groups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBecause the main discharge current bypasses the BMS, the board does not provide main-output discharge protection.\u003c\/p\u003e\n\u003cp\u003eYour battery and vehicle system must use appropriate:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eESC low-voltage cutoff settings\u003c\/li\u003e\n\u003cli\u003eMain-output fusing where required\u003c\/li\u003e\n\u003cli\u003eProper wire sizing\u003c\/li\u003e\n\u003cli\u003eShort-circuit prevention\u003c\/li\u003e\n\u003cli\u003eBattery monitoring\u003c\/li\u003e\n\u003cli\u003eSafe charging and operating procedures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery configuration:\u003c\/strong\u003e 10S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery chemistry:\u003c\/strong\u003e Lithium-ion\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal pack voltage:\u003c\/strong\u003e Approximately 36V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum charge voltage:\u003c\/strong\u003e 42V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum charging current:\u003c\/strong\u003e 10A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Charge only \/ discharge bypass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnections:\u003c\/strong\u003e P−, B−, balance connector and capped NTC lead\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Cell monitoring, balancing and charge-side protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 20A label is the board’s rated current specification. Recommended maximum charging current is \u003cstrong\u003e10A\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eCommon Applications\u003c\/h2\u003e\n\u003cp\u003eThis BMS may be used with compatible:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e10S electric skateboard battery packs\u003c\/li\u003e\n\u003cli\u003eDIY lithium-ion battery packs\u003c\/li\u003e\n\u003cli\u003eModular electric-vehicle projects\u003c\/li\u003e\n\u003cli\u003eDrift carts and compact EV builds\u003c\/li\u003e\n\u003cli\u003eOther 10S battery systems using a charge-only bypass configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCompatibility depends on the exact battery chemistry, series count, charger voltage, charging current, balance-wire order and complete battery architecture.\u003c\/p\u003e\n\u003ch2\u003eConnection Overview\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eB−: \u003c\/strong\u003eConnects to the main negative terminal of the battery pack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eP−: \u003c\/strong\u003eConnects to the negative side of the charging port or charger circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery positive: \u003c\/strong\u003eIn a typical charge-only setup, charger positive connects directly to pack positive.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalance connector: \u003c\/strong\u003eConnects to the battery’s individual series groups in the correct sequential order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNTC: \u003c\/strong\u003eThe NTC lead is capped and not used in the standard TorqueBoards bypass configuration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x 10S 10A charge-only bypass BMS\u003c\/li\u003e\n\u003cli\u003e1x 10S Balance Wire Harness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eTemperature sensors, connectors, chargers and additional wiring are not included unless specifically stated in the selected product option.\u003c\/p\u003e\n\u003ch2\u003eCompatibility Requirements\u003c\/h2\u003e\n\u003cp\u003eBefore installation, confirm:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe battery is exactly 10S\u003c\/li\u003e\n\u003cli\u003eThe battery uses compatible lithium-ion cells\u003c\/li\u003e\n\u003cli\u003eThe charger output does not exceed 42V\u003c\/li\u003e\n\u003cli\u003eCharging current does not exceed 10A\u003c\/li\u003e\n\u003cli\u003eThe balance connector and wire sequence match the BMS\u003c\/li\u003e\n\u003cli\u003eP− and B− are wired correctly\u003c\/li\u003e\n\u003cli\u003eThe main discharge path bypasses the BMS\u003c\/li\u003e\n\u003cli\u003eThe complete system includes appropriate discharge-side protection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDo not use this BMS with a different series count or incompatible battery chemistry.\u003c\/p\u003e\n\u003ch2\u003eInstallation and Verification\u003c\/h2\u003e\n\u003cp\u003eIncorrect BMS wiring can permanently damage the BMS, battery cells, charger or connected equipment.\u003c\/p\u003e\n\u003cp\u003eBefore connecting the BMS:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eMeasure every cell group.\u003c\/li\u003e\n\u003cli\u003eConfirm each group is within a safe and similar voltage range.\u003c\/li\u003e\n\u003cli\u003eVerify the full pack voltage.\u003c\/li\u003e\n\u003cli\u003eConfirm the balance-wire order.\u003c\/li\u003e\n\u003cli\u003eMeasure sequentially from battery negative to each balance lead.\u003c\/li\u003e\n\u003cli\u003eConfirm P− and B− connections.\u003c\/li\u003e\n\u003cli\u003eVerify charger polarity and output voltage.\u003c\/li\u003e\n\u003cli\u003eInsulate all exposed conductors.\u003c\/li\u003e\n\u003cli\u003eConfirm the discharge circuit bypasses the BMS as intended.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eBalance-wire voltages should rise sequentially from battery negative. Never plug in the balance connector until the wiring order has been verified with a multimeter.\u003c\/p\u003e\n\u003ch2\u003eImportant Limitations\u003c\/h2\u003e\n\u003cp\u003eBecause this is a charge-only bypass configuration, it does not provide main-output:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDischarge overcurrent protection\u003c\/li\u003e\n\u003cli\u003eShort-circuit cutoff\u003c\/li\u003e\n\u003cli\u003eLow-voltage discharge cutoff\u003c\/li\u003e\n\u003cli\u003eMotor-current management\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDo not describe or use it as a full charge-and-discharge BMS when installed in bypass mode.\u003c\/p\u003e\n\u003ch2\u003eSafety Information\u003c\/h2\u003e\n\u003cp\u003eLithium-ion battery packs can cause fire, severe injury or property damage if incorrectly assembled, wired, charged, damaged or serviced.\u003c\/p\u003e\n\u003cp\u003eInstallation should only be completed by someone experienced with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLithium-ion battery architecture\u003c\/li\u003e\n\u003cli\u003eSeries and parallel cell groups\u003c\/li\u003e\n\u003cli\u003eBalance-wire sequencing\u003c\/li\u003e\n\u003cli\u003eBMS wiring\u003c\/li\u003e\n\u003cli\u003ePolarity verification\u003c\/li\u003e\n\u003cli\u003eInsulation and short-circuit prevention\u003c\/li\u003e\n\u003cli\u003eProper charger selection\u003c\/li\u003e\n\u003cli\u003eElectrical testing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNever connect a charger until every wire and voltage has been verified.\u003c\/p\u003e\n\u003cp\u003eStop using the battery if you detect excessive heat, swelling, unusual odor, damaged cell wrappers, abnormal voltages, repeated imbalance or damaged wiring.\u003c\/p\u003e","brand":"TorqueBoards","offers":[{"title":"Default Title","offer_id":52432884236519,"sku":null,"price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2363\/7649\/files\/10S36V10ABypassBMS.webp?v=1785455035","url":"https:\/\/diyelectricskateboard.com\/products\/10s-42v-10a-charge-only-bypass-bms","provider":"DIY Electric Skateboard","version":"1.0","type":"link"}