This BMS board bundle includes 4-24S only charge BMS Board and BMS adapter.  

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MKBMS 4S-30S 20A Only Charge Battery Protect Board device is designed to reduce the risk of charging. Designed to be ultra-compact and simple to use without any configuration required. Features high charging current, balancing activity LED lights, overcharge, and over temperature protection .Extensive Used in electric bicycles, electric scooters, Onewheels and other fields. MKBMS 4S-30S 20A Only Charge Board does not support discharge protection, please do not discharge through this protection board. adapter board: https://shorturl.at/bhjTY Specs: Type: Charge only Cell Chemistry: Li-ion (3.7V nominal) Balance method: Passive balance Series Count: 4S-30S Charge Current: 20A Overcharge Voltage: 4.25V Overcharge Reset: 4.19V Balance:20-30mA@4.2V（Please balance the battery first before charging） Overtemperature: 60°C Overtemperature Reset: 40°C Size: 130*30*11mm Net weight: 30g Features: Compact charge only design Cell balance indicator LED Compatible with 4s-30s battery Designed to be ultra-compact and simple to use without any configuration required Anodized aluminum heatsink case, stable performance Functions: Balance function Overcharge protection Overtemperature protection Cell balance indicator LED Common Uses: ▪ One-wheeled electric skateboards ▪ Electric Skateboards ▪ Electric Scooters ▪ Electric Bikes ▪ EUCs Package Included: 1* MKBMS 4S-30S 20A Only Charge Board 1* GH2.0 single head 15P line 1* GH2.0 single head 16P line 1* HY2.0 single head 2P cable with thermal protection switch 1* Charging cable with XT30 or XT60 connectors Operation Notes: Please ensure the correctness of the wiring sequence, from B0-B15, B16-B30, the voltage increases from low to high in sequence. This BMS is compatible with battery packs up to 30s, which is over 5V DC when fully charged. Electric shocks from high voltage may cause serious injury. Please pay attention to safety when using. This device is designed to reduce the risk of charging and will not protect against overcurrent discharge, undervoltage, internal pack shorts, pack overtemperature. Video:

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MKBMS is based on the modular BMS of LTC68XX and STM32 MCU, and is connected to one or more slave boards and integrated integrated boards of different sizes through the ISOSPI interface. The modular BMS can be configured for various applications with battery voltages within 150V. MKBMS Master Board ( MKBMS-LV Master Mini ) Features: With charger voltage measurement, humidity sensor, isolated on-board 5V power supply for isolating CAN bus interface and USB Type-C 17V to 150V operation Voltages measurements for load & battery pack Bi-directional current monitoring (up to 2500A pulsed, 500A continuous) Isolated charger detection circuit Isolated CAN bus interface Daisychain Master/Slave ISOSPI communication Single PCB pattern for bolt-on contactor It can internal power supply or external power supply voltage is 12V Integrated predischarge circuit USB & serial interface for configuring and firmware upgrades with the ENNOID-BMS-Tool OLED display output ON/OFF toggle switch input SWD burn debugging or update firmware interface   MKBMS Slave Board Features: MKBMS slave board is made of aluminum base plate, which has better heat dissipation effect. Scalable & isolated 1000VDC+ Compatible with MKBMS Master boards From 5 to 18 cell levels monitoring per board Daisychain Master/Slave ISOSPI communication Parameters fully programmable through an easy to use graphical user interface 33 ohm balance resistors (0.125A capacity) on all channels Self powered by monitored cells 1.2mV accuracy, -40 to 120C operation Extra low power consumption (Sleep mode = 6uA) Molex SL horizontal connectors for balance & temperature. (Comes with male, female + crimps)       Variant:      LTC6811 : Up to 12 series-connected battery cells & 1+4 temperature sensors* per slave      LTC6812 : Up to 15 series-connected battery cells & 1+8 temperature sensors* per slave      LTC6813 : Up to 18 series-connected battery cells & 1+8 temperature sensors* per slave      *The first temperature channel is used by slave board itself. The following 4 or 8 temperature sensors are not in the package lists but means an interface to connect 4 temp sensors at most or to connect 8 temp sensors at most. *For uneven cell count in series, only the last slave board in the daisy-chained loop should have one cell less connected than the other slaves. Ex: 39S = 10S + 10S + 10S + 9S MKBMS battery management system implements the following functions: 1. Current and voltage protection: protect the battery pack from overcharge and overdischarge, thereby extending the cycle life. 2. Battery health monitoring: monitor the internal resistance of a single battery and the monitoring capacity of the battery pack. 3. Thermal management: Overheating and under-temperature protection. 4. Support batteries: Li-Ion, Li-Polymer, Li-Phosphate 5. Intelligent battery balance: passive balance  6. Field programmable 7. Current limit calculation 8. Fully programmable CANBUS interface, programmable structure of all CAN messages 9. Drift state of charge 10. Reliability, speed and accuracy 11. Integration with other devices 12. Multiple BMS units connected in series 13. Current sensor support 14. Isolation from fault detection 15. Automotive grade design, automotive grade locking connector 16. Software for data logging and programming MKBMS can be roughly divided into three aspects: automobile, industry, and consumption: 1.  Electric vehicles;2.  Electric patrol car;3.  Scenic sightseeing car;4.  Handling robots;5.  Automatic forklift;6.  Electric bicycles;7.  Electric skateboard;8.  Electric tools;9.  Consumer robots, etc. Video: Shipping list: MKBMS-LV Master Mini Package 1X   PCBA board MKBMS-LV Master Mini V1.4 2X   GH1.25 single head 2P line 1X   GH1.25 double head 2P same direction line 3X   HY2.0 single head 2P line 2X   GH1.25 single head 5P line 1X   GH1.25-5P to Dupont line 1X   USB cable type-C data cable 1X   2.0MM jumper cap 1X   1.3 inch OLED display LCD screen module 1X  12MM 3-6V button switch   LTC6811-12S Package 1X   PCBA board LTC6811-12W-AL V1.2 slave board 1X  GH1.25 double head 2P red-black line (for master board)   1X  GH1.25 double head 2P black-white line (for slave board) 1X   HY2.0 single head 5P line 1X   HY2.0 single head 13P line 4X   Nylon column 4X   Nylon nut     LTC6813-18S  Package 1X PCBA board LTC6813-18S V1.4 slave board 1X  GH1.25 double head 2P red-black line (for master board)   1X  GH1.25 double head 2P black-white line (for slave board) 1X HY2.0 single head 6P line 1X HY2.0 single head 13P line 1X HY2.0 single head 16P line 4X nylon column 4X nylon nut   LTC6812-15S  Package—— 1X   PCBA board LTC6812-15S slave board 1X  GH1.25 double head 2P red-black line (for master board)   1X  GH1.25 double head 2P black-white line (for slave board) 2X   HY2.0 single head 8P line 1X   HY2.0 single head 16P line 4X   Nylon column 4X   Nylon nut    MKBMS hardware design file: LTC6811-12W_V1.2 MKBMS-LV_Master_Mini_V1.4

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MKBMS is based on the modular BMS of LTC68XX and STM32 MCU, and is connected to one or more slave boards and integrated integrated boards of different sizes through the ISOSPI interface. The modular BMS can be configured for various applications with battery voltages within 150V. MKBMS is developed based on the open source materials of DieBieMS and ENNOID BMS. Currently MKBMS is compatible with ENNOID firmware. Here, a special thanks to the developers of open source BMS materials.  Maybe you need more MKBMS options: https://bit.ly/3EQO9Nt  MKBMS Master Board ( MKBMS-LV Master Mini ) Features: With charger voltage measurement, humidity sensor, isolated on-board 5V power supply for isolating CAN bus interface and USB Type-C 30V to 150V operation Voltages measurements for load & battery pack Bi-directional current monitoring (up to 2500A pulsed, 500A continuous) Isolated charger detection circuit Isolated CAN bus interface Daisychain Master/Slave ISOSPI communication Single PCB pattern for bolt-on contactor It can internal power supply or external power supply voltage is 12V Integrated predischarge circuit USB & serial interface for configuring and firmware upgrades with the ENNOID-BMS-Tool OLED display output ON/OFF toggle switch input SWD burn debugging or update firmware interface   MKBMS Slave Board (LTC6811-12W-AL) Features: MKBMS slave board is made of aluminum base plate, which has better heat dissipation effect. Scalable & isolated 1000VDC+ Compatible with MKBMS Master boards From 5 to 18 cell levels monitoring per board Daisychain Master/Slave ISOSPI communication Parameters fully programmable through an easy to use graphical user interface 33 ohm balance resistors (0.125A capacity) on all channels Self powered by monitored cells 1.2mV accuracy, -40 to 120C operation Extra low power consumption (Sleep mode = 6uA) Molex SL horizontal connectors for balance & temperature. (Comes with male, female + crimps)       Variant:      LTC6811 : Up to 12 cells voltage monitoring & 1+4 temperature sensors* per slave       LTC6812 : Up to 15 cells voltage monitoring & 1+8 temperature sensors* per slave      LTC6813 : Up to 18 cells voltage monitoring & 1+8 temperature sensors* per slave    *The first temperature channel is used by slave board itself. The following 4 or 8 temperature sensors are not in the package lists but means an interface to connect 4 temp sensors at most or to connect 8 temp sensors at most. Pack configuration examples: MKBMS monitoring 23S pack : 2 x LTC6811-12S : 12S + 11S ( Optimal)2 x LTC6812-15S : 12S + 11S (Two slaves partially loaded)2 x LTC6813-18S : 12S + 11S (Two slaves partially loaded) MKBMS monitoring 27S pack : 3 x LTC6811-12S: 9S + 9S + 9S (Three slaves partially loaded)2 x LTC6812-15S: 14S + 13S (Optimal)2 x LTC6813-18S: 14S + 13S (Two slaves partially loaded) MKBMS monitoring 29S pack : 3 x LTC6811-12S: 10S + 10S + 9S (Three slaves partially loaded)2 x LTC6812-15S: 15S + 14S ( Optimal)2 x LTC6813-18S: 15S + 14S (Two slaves partially loaded) MKBMS monitoring 30S pack : 3 x LTC6811-12S: 10S + 10S + 10S (Three slaves partially loaded)2 x LTC6812-15S: 15S + 15S ( Optimal)2 x LTC6813-18S: 15S + 15S (Two slaves partially loaded) MKBMS monitoring 35S pack : 3 x LTC6811-12S: 12S+12S+11S (Good)3 x LTC6812-15S: 12S+12S+11S (Three slaves partially loaded)2 x LTC6813-18S: 18S + 17S (Optimal choice) *For uneven cell count in series, only the last slave board in the daisy-chained loop should have one cell less connected than the other slaves. Ex: 39S = 10S + 10S + 10S + 9S     MKBMS battery management system implements the following functions: 1. Current and voltage protection: protect the battery pack from overcharge and overdischarge, thereby extending the cycle life. 2. Battery health monitoring: monitor the internal resistance of a single battery and the monitoring capacity of the battery pack. 3. Thermal management: Overheating and under-temperature protection. 4. Support batteries: Li-Ion, Li-Polymer, Li-Phosphate 5. Intelligent battery balance: passive balance  6. Field programmable 7. Current limit calculation 8. Fully programmable CANBUS interface, programmable structure of all CAN messages 9. Drift state of charge 10. Reliability, speed and accuracy 11. Integration with other devices 12. Multiple BMS units connected in series 13. Current sensor support 14. Isolation from fault detection 15. Automotive grade design, automotive grade locking connector 16. Software for data logging and programming   MKBMS can be roughly divided into three aspects: automobile, industry, and consumption: 1.  Electric vehicles;2.  Electric patrol car;3.  Scenic sightseeing car;4.  Handling robots;5.  Automatic forklift;6.  Electric bicycles;7.  Electric skateboard;8.  Electric tools;9.  Consumer robots, etc. Shipping list: MKBMS Master Board + Slave Board Package 1X   PCBA board MKBMS-LV Master Mini V1.4 2X   GH1.25 single head 2P line 1X   GH1.25 double head 2P same direction line 3X   HY2.0 single head 2P line 2X   GH1.25 single head 5P line 1X   GH1.25-5P to Dupont line 1X   USB cable type-C data cable 1X   2.0MM jumper cap 1X   1.3 inch OLED display LCD screen module 1X   12MM 3-6V button switch 1X   PCBA board LTC6811-12W-AL V1.2 slave board 1X  GH1.25 double head 2P red-black line (for master board)   1X  GH1.25 double head 2P black-white line (for slave board) 1X   HY2.0 single head 5P line 1X   HY2.0 single head 13P line 4X   Nylon column 4X   Nylon nut   MKBMS hardware design file: LTC6811-12W_V1.2 MKBMS-LV_Master_Mini_V1.4

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Product Description-- Charging current: <60A Discharge current: < 150A Internal resistance: ≤15mΩ   Charging voltage: The number of Li-ion battery in series connection X 4.2VWiring : same port or different ports（When using the charging and discharging same port, disconnect the p-）   Overcharge protection—— Detection voltage: 4.25±0.025V Detection delay: 1000±500MS Release voltage: 4.15±0.05V   Over-discharge voltage protection—— Detection voltage: 2.75±0.1V Detection delay: 1000±500MS Release voltage: 3.0±0.1V   Balanced voltage—— Detection voltage: 4.15±0.025V Detection delay: 100±50MS Balance current: 42±5MA   Over discharge current protection—— Detection voltage: 50±15MV Detection delay: 1000±500MS Current protection: 300±50A 450±50A 600±60A   Short circuit protection-- Trigger condition: external short circuit Detection delay: 300us Release condition: disconnect the load   Temperature control protection—— Charge and discharge over-temperature protection: 55℃ Charge and discharge high temperature release temperature: 75℃ Release condition:During normal working temperature          Self-consumption—— Working power consumption: <35UA Over-discharge power consumption(Sleeping State): <10UA Operating temperature range: -30°~+80°C   Product Features-- Overcharge protection Over discharge protection Over current protection Balanced protection Temperature control protection Applicable for 8-14S battery   Size:121*50*12.8mm Net weight:244g Weight: 331.5g   Package: 1* PCBA board 1*HY2.0 single head 15P line   Wiring diagram  

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MKBMS 15-24S_120A BMS board is a full-function Li-ion battery protection board with passive balance. The continuous current can reach to 120A. It supports overcharge protection, overcharge protection, over current protection, ,over temperature protection, short circuit protection, etc. Extensive evaluation of e-bike, e-skateboard,electric motorcycles, e-scooters, electric balance cars and other fields.  Parameters: wiring: same port or different ports（When using the charging and discharging port, disconnect the p-） Battery type: li-ion battery (standard voltage 3.7V) Balance method: passive balance Number of battery strings: 15S-24S Overcharge voltage: 4.25V Overcharge recovery voltage: 4.15V Over-discharge threshold: 2.8V Over-discharge release: 3.0V Passive equalization turn-on voltage: 4.125V Charging current: 80A Discharge current: 120A Charging overcurrent: 200A Discharge overcurrent: 480A Charging protection temperature: 50°C Charging recovery temperature: <45°C Discharge protection temperature: 70°C Discharge recovery temperature: <60°C Size: 140*66*16mm For detailed parameters, please refer to “15-24S BMS Parameter Table” Feature: Balance function, fully activate the battery capacity No need to adjust parameters, the operation is easier Metal heat sink, more stable performance With locking cable arrangement, the wiring is more secure Function: Over charge protection Over discharge protection Overcurrent protection Short circuit protection Temperature control protection Balanced protection Static protection Load detection function Application : Electric skateboard Electric bicycle Smart balance car Electric Scooter Forklift Cleaning car Sightseeing car Energy storage Outdoor power supply Shipping list: 1X MKBMS Li-ion BMS Board 1X GH2.0 single head P line（with buckle） Operational matters: please ensure the correctness of the wiring sequence during wiring. Please arrange the lines in order from B0-B12, B13-B24. After the battery is fully powered, the voltage will reach a maximum of 100V. There is a risk of electric shock, so please pay attention to protection.

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MKBMS 4-14S_80A BMS board is a full-function Li-ion battery protection board with passive balance. The continuous current can reach to 80A. It supports overcharge protection, overcharge protection, over current protection, ,over temperature protection, short circuit protection, etc. Extensive evaluation of e-bike, e-skateboard,electric motorcycles, e-scooters, electric balance cars and other fields. Parameters:  Feature: Wiring : same port or different ports（When using the charging and discharging same port, disconnect the p-） Balance function, fully activate the battery capacity No need to adjust parameters, the operation is easier Metal heat sink, more stable performance With locking cable arrangement, the wiring is more secure Function: 1 .Over charge protection Over discharge protection Overcurrent protection Short circuit protection Temperature control protection Balanced protection Static protection Load detection function Application : Electric skateboard Electric bicycle Smart balance car Electric Scooter Forklift Cleaning car Sightseeing car Three-wheels car  Shipping list: 1X MKBMS（4/7/10/13/14）S 80A Li-ion BMS Board 1X GH2.0 single head（5/8/11/14/15）P line（with buckle） Operational matters: Please ensure the correctness of the wiring sequence during wiring.Please arrange the lines in order from B0-B14.After the battery is fully powered, the voltage will reach a maximum of 100V. There is a risk of electric shock, so please pay attention to protection.    

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Product Description-- Charging current: ≤10A Discharge current: 30A Internal resistance: ≤15mΩ Charging voltage:The number of Li-ion batteryin series connection X 4.2VWiring : Same Port   Overcharge protection—— Detection voltage: 4.25±0.025V Detection delay: 1000±500MS Release voltage: 4.15±0.05V Over-discharge voltage protection—— Detection voltage: 2.75±0.1V Detection delay: 1000±500MS Release voltage: 3.0±0.1V Balanced voltage—— Detection voltage: 4.15±0.025V Detection delay: 100±50MS Balance current: 42±5MA Over discharge current protection—— Detection voltage: 50±15MV Detection delay: 1000±500MS Current protection: 50±8A Short circuit protection-- Trigger condition: external short circuit Detection delay: 300us Release condition: disconnect the load Temperature control protection—— Charge and discharge over-temperature protection: 55℃ Charge and discharge high temperature release temperature: 75℃ Release condition:During normal working temperature Self-consumption—— Working power consumption: <35UA Over-discharge power consumption(Sleeping State): <10UA Operating temperature range: -30°~+80°C   Product Features-- Overcharge protection Over discharge protection Overcurrent protection Balanced protection Temperature control protection Applicablefor 4S-7S / 8S-14S Li-ion battery   Package—— 4S-7S: 1* 4-7S BMS PCBA board 1*HY2.0 single head 8P line Net weight:12.2g Weight:87g Size:47.6*32*9.2mm 8S-14S: 1* 8-14S BMS PCBA board 1*HY2.0 single head 7P line 1*HY2.0 single head 8P line Net weight:13.3g Weight:96g Size:47.6*32*9.2mm   ATTENTION—— 1. It is strictly forbidden to insert balance wires into BMS before connecting batteries.Must make sure that the cable is soldered correctly first , and then connect the BMS board. 2. The sequence of connecting wires for BMS: a.From thin black balance wire to stare, the 2ndwire(thin red wire)connect with the 1stbattery’s positive pole.Then connect each cell’s positive pole in order until the last one B+. b.Please do not insert the plug directly after the cable is connected.Measure the voltage between each two adjacent metal terminals on the back of the plug. If it is a ternary polymer battery, the voltage should be between 3.0 ~4.2V, and the voltage of the iron-lithium battery should be between 2.0 ~3.6V. The voltage should be between 1.5~2.75V. c.After confirming that the wiring sequence and voltage of the cables are correct, insert them into the socket of the protection board. Attentionplease: The cables of different manufacturers are not universal, please make sure to use the matching cables. 3. After the wiring is completed, measure whether the voltage of battery B+and B- ,andthe voltage of B-and C- are equal. If they are equal, the protection board is working normally and can be used normally. If it is not equal, please check the wiring again.

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Specification: Charging Voltage: 6*4.2VCharging Currect: 15ACharging Overcurrent Protection Value: 26ABalance Enable Voltage: 4.125VBattery Balance Current: 25 ± 5mAOvercharge Detection Voltage: 4.25 ± 0.05VOvercharge Release Voltage: 4.15 ± 0.05VDischarge Current: 30ADischarge Overcurrent Protection Value: 66AOver-discharge Detection Voltage: 2.8 ± 0.05VOver-discharge Release Voltage: 3.0 + 0.05VOver-discharge Detection Delay: 1Sshort Circuit Detection Delay: 200-500 μS (The actual results are subject to the customer's return and inspection)Working Temperature Range: -30°C~70°CStorage Temperature Range: -40°C~125°CTemperature Protection: Charging: -10°C~50°C, Discharging: -30°C~70°C (can be customized)Sleep Current (Battery Over-discharge): 10μA

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Specifications: Model:  2299223-2 Power supply mode:  direct current Voltage:  381V-1000V Coil voltage:  12-24V Terminal pass voltage:  450-900V Long-term passing safety current:  500A Maximum current:  1000A Instantaneous current:  2000A Applicable object:  automotive relay Relay type:  electromagnetic relay   Typical application: DC high voltage high current applications Main contactors for hybrid,full battery electric vehicles and fuel-cell cars Battery charging system MKBMS Battery Management System       Package List: 1x    TE2299223-2 EVC500 Main Contactor 1X     HY2.0 single head 2P line  

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Wiring Terminal Set Specification Brand: MAXKGO Material: copper, stainless steel Net Weight: 62g Package Weight: 100g Package Dimensions: 12cm*8cm*8.5cm Applies to: BMS low voltage master board Model Inside Diameter Outer Diameter Width Front End Thickness Hole Diameter  T90-25/8 7.1 9.5 14.0 16.0 2.0 8.3 Size :  90 degree angle terminal block / unit(mm)    Features Adopt copper material and stainless steel material. Not easy to rust. Hard to bend. No pollution to the environment. Good taste for collocation for it's beautiful lustre. Outstanding capabilities in anti-corrosion and anti-rust even in the humid environment. Enjoy wide application since it's safe and easy to use.  Package Lists 90 degree angle terminal block T90-25/8       X 4  (copper) M8*16 stainless steel round head screw         X 2  (stainless steel) M8*Stainless steel nut        X 2   (stainless steel) M8 copper gasket        X 4   (copper) EVC 500 Main Contacto

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Specification MAXKGO DCDC 450V to 12V Step-down Power Supply Module is a high-voltage DC-DC converter from 450V to 12V and can provide a DC current of 4.2A. The input voltage can support the range of 150V-450V.The out voltage is equipped with a fine adjustment that be adjusted with a range of 11.8V-12.2V DC. The converter has good stability and reliability and is widely used in various occasions that require high-voltage conversion to low-voltage. Feature Output characteristics Input voltage：100-450V DC Output voltage：12V/4.2A Output voltage accuracy：±1% Ioading effect：10%~100%Ionom  △Voutnom≤±0.2% Source effect ：Vinmin~Vinmax △Voutnom≤±0.2% Ripple：100mV Conversion efficiency：80% （Typical value） Temperature Coefficient：≤±0.02%/℃（Maximum） Security features Isolation voltage：Vin~Vout   Vin~FG   Vout~FG   All are 500vdc/min Insulation resistance：≥100MΩ Protective function：Short circuit protection（self-recovery） Environmental characteristics Working temperature：-25 ~ +85℃ Storage temperature：-40 ~ +105℃ Relative humidity：10RH ~ 90RH Implementation standards Electromagnetic Compatibility:IEC100、EN61000 Safety：UL1950、IEC950  Features High power density, small size Multiple protection function Enhanced electromagnetic compatibility design, can work in strong electromagnetic environment Integrated potting process, anti-corrosion, moisture-proof and shock-proof Good thermal conductivity and reliability Application MAXKGO Master-slave BMS Energy storage Photovoltaic New energy vehicles Widely used in various occasions requiring DCDC conversion Shipping list 1X    MAXKGO DC-DC 450V to 12V Converter 1X    GH2.0 single head 2P cable（With buckle） 1X   power cable Operational matters Please ensure the correctness of the wiring sequence when wiring. The input voltage will reach a maximum of 450V. There is a risk of electric shock, so please pay attention to protection.

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