A Battery Management System (BMS) is a smart element of a Li-ion battery pack responsible for monitoring and protection.  The lithium-ion batteries can be used only in specified conditions, and therefore battery management system is essential in order to monitor battery state and ensure the safety of operation.

A battery management system (BMS) is an electronic module that controls a rechargeable battery (cell or battery pack), such as by protecting the battery from operating outside its safe operating area, monitoring its state, calculating secondary data, reporting that data, controlling its environment, authenticating it.

The SmartElex 3s BMS device is a highly integrated Li-ion switched-mode battery-charge controller. The device offers a constant-frequency synchronous switching PWM controller with high–accuracy charge current and voltage regulation, charge preconditioning, termination, adapter current regulation, and charge status monitoring.

The device operates on a 19V DC 5A(minimum) wall adapter that connects through DC Jack or 2 pin connectors onboard. Our SmartElex 3s Li-ion board supports up to 7A. SmartElex 3s Li-ion BMS have various protection like Overvoltage, Undervoltage, Overcurrent during discharge (OCD). SmartElex 3s Li-ion BMS have Status LEDs indicating battery status by which we will know cell in overvoltage, under-voltage.

Switching Mode:

Features : 

1. Input Interface: 2Pin connector and DC JACK input.
2. Output Interface: – 2 Pin Connector with properly marked positive and negative signs on PCB.
3. LED indicator: Input Power status/ Charging / Charge complete / Over-voltage / under-voltage.
4. High-accuracy voltage detection circuit.
5. Using high voltage device charging terminal.
6. The battery charge and discharge can control the MOS transistor.

Package Includes:

1 x SmartElex 3s Li-ion BMS

Solar Power Manager 5V is a small power and high-efficiency solar power management module designed for 5V solar panels. It features an MPPT (Maximum Power Point Tracking) function, maximizing the efficiency of the solar panel.

The module can provide up to 900mA charging current to a 3.7V Li battery with a USB charger or solar panel. The ON/OFF controllable DC-DC converters with 5V 1A output satisfy the needs of various solar power projects and low-power applications.

The module also employs various protection functions for battery, solar panel, and output, which greatly improves the stability and safety of your solar projects

Application:

1. Smart solar environment monitor system
2. Solar-powered robot
3. Small solar street lamp
4. Solar power bank

Features:

1. Constant voltage MPPT algorithm, maximizing solar panel efficiency
2. Designed for 5V solar panel
3. Double charging mode: solar/USB charger (900mA max charge current)
4. 5V ON/OFF controllable regulated power supply for low-power applications
5. All-round protection functions
6. USB connector with ESD shell

Package includes:

1 x DFRobot 5V Solar Power Manager

13S 48V 15A Li-ion Battery Protection Board is used for Overcharge protection, over-discharge protection function, short circuit protection function and over-current protection function

Note: Images shown may vary from actual products in terms of the value printed on it

Features:

1. Continuous Discharging Current: 15A
2. Working Current: ≤50uA
3. Sleep Current(when Over-discharge): ≤10uA
4. Working Temperature: -30~80℃
5. Instantaneous Discharge Current: 100A
6. Charging Voltage: 54.6V
7. Charging Current: 15A(Max.)
8. Over-charge Detect: 4.28±0.05V

1 x  13S 48V 15A Li-ion Battery Protection Board

1 x Connecting Wire

This protection board is 3s in common use lithium battery protection board (you can adjust for how many strings to be used) Specified chip, stable performance, support disconnection protection, over-current protection, over-discharge protection, overcharge protection, with balance, etc. A common use for “same port” and “different port”, the protection board uses 15 high-power of ultra-low resistance MOS tubes (discharge of 8, charging 7), in the same port mode can support the discharge current 60A, charging current 60A; different port mode discharges current 80A, charging current 60A. Can used for LMO.Ternary lithium battery.LCO(3.7V)battery packs etc.

Features:

1. Temperature protect: Yes
2. Disconnect protect: Yes
3. Shortage protection: Yes
4. Shortage delay: 100-600 uS
5. Shortage protect recovery: YES
6. Charging Current: 60A
7. Current Balance: Yes

Package Includes:

1 x White 4S 100A LiFePO4 Lithium Battery Protection PCB Board

8S 29.6v li-ion lipo balancer board balancing board full charge battery balance board.

The balance board is suitable for the li-ion battery pack without balance functions, so as to equalize charge lithium battery charge function, make the battery pack each series charge at the same time.

The balancer is just an Auxiliary function, The balancing means when the battery is charging, each series battery need the same voltage. when ONE cell voltage gets 29.6V, the other cells not, the first cell voltage will discharge to wait for the other cells to rise to the same level.

Note: Battery internal resistance differences within 5 milliohms, the voltage within 0.03 V voltage, capacity vary within 50 ma Cut-off Voltage is according to the BMS setting.

8S Cnnection instruction:

Product Size: 37.3 * 25.8 * 2.4mm

Solder Joint Description:

B – Connect the negative of the battery pack

B1 Connect battery 1 to the contacts in battery 2

B2 Connect battery 2 to the contacts in battery 3

B3 Connect battery 3 to the contacts in battery 4

B4 Connect battery 4 to the contacts in battery 5

B5 Connect battery 5 to the contacts in battery 6

B6 Connect battery 6 to the contacts in battery 7

B7 Connect battery 7 to the contacts in battery 8

Features :

1. Type: Voltage Regulator.
2. Supply Voltage: 29.6v
3. Dissipation Power:18650 Lithium Battery Balanced Function Board.
4. Operating Temperature: Discharge Shunt balanced 4.2V 66mA.
5. Application: 8s Lithium Battery Balanced Function Board.

Package Include:

1 x Lithium Battery Equalizer Board

Features:

1. With Balance.
2. Overcharge protection.
3. PCB color: Blue.
4. Over-discharge protection.
5.  18650 Lithium Battery Equalizer Board.

Specification:

1. Battery types: 18650 Lithium Battery
2. Type: Voltage Regulator.
3. Supply Voltage: 21v
4. Dissipation Power:18650 Lithium Battery Balanced Function Board.
5. Application: 8s Lithium Battery Balanced Function Board.
6. No. resistors: 5
7. Values of resistor: 620R

Package Includes:

1 x  5S 18.5V 18650 Lithium Battery Equalizer Board 21V.