Assorted Battery Management Items, For details on each Brand please select the Correct Tabs

Name: BMS (Battery Management System) for all LiFePo4 3.2V Cells
SKU: __123Smart
Availability: InStock

We stock the 123 Smart BMS Kits and other parts

NEW Chargery BMS for 2 to 8 Cells these cover the 12v and the 24 volt batteries and also for 2 to 16 Cells these cover the 48 volt batteries

or Daly 4 Cell BMS system with 500 Amp Fets

All these are easy to use yet advanced, modular BMS to keep your lithium batteries in perfect condition, increasing the lifespan of the battery pack.

The BMS measures important data like cell voltages, cell temperatures and in- and outgoing currents with the two included high accuracy, dual range current sensors. By measuring both currents independently – it is possible to know the current production and consumption. The system balances all cells to the same voltage during charging.

Two integrated signal relays with potential free contacts can be used to switch enable/disable signals or power relays to control the power to chargers/solar regulators and/or inverters.

Easily connect your phone to the BMS to see relevant information including state of charge, energy consumed, energy stored, in- and outgoing current, cell voltages, cell temperatures, SOC history of the last week and error history.

Features

All the units have the below Features

LTO compatible, Operates on cell voltages between 1.5V and 5.0V
LiFePo4 Operates on cell voltages between 2 and 3.65 Volts, or the rand nominated by the battery manufacturer
High accuracy SOC, dual range current sensors to measure a wide range of currents up to 500A.
Error history to see when, what cell and which error occurred.
SOC logging of the last week.
More accurate temperature measurement near cell pole
Over the air firmware update
Easier configuration

Main features

Modular BMS which can be used from 2 to 255 cells.
Can be mounted directly on the cells, no external controller needed.
Two signal relays with potential free contacts which indicate the system is allowed to load and/or charge. This can be used to switch enable/disable signals or power relays.
Possible to use two current sensors instead of one to see consumed and produced energy independently.
Wireless connection to see relevant data on your portable device.
Compatible with almost any cell chemistry including LTO, LiFePO4, NMC and NCA.
1A balancing current. Even big cell capacities will be balanced.

123 Smart KIT

123SmartBMS Gen3

is an easy to use yet advanced, modular BMS to keep your lithium batteries in perfect condition, increasing the lifespan of the battery pack.

The BMS measures important data like cell voltages, cell temperatures and in- and outgoing currents with the two included high accuracy, dual range current sensors. By measuring both currents independently, it is possible to know the current production and consumption. The system balances all cells to the same voltage during charging.

Two integrated signal relays with potential free contacts can be used to switch enable/disable signals or power relays to control the power to chargers/solar regulators and/or inverters.

Features

New in gen3

LTO compatible, Operates on cell voltages between 1.5V and 5.0V
High accuracy SOC, dual range current sensors to measure a wide range of currents up to 500A.
Error history to see when, what cell and which error occurred.
SOC logging of the last week.
More accurate temperature measurement near cell pole
Over the air firmware update
Easier configuration

Main features

Modular BMS which can be used from 2 to 255 cells.
Can be mounted directly on the cells, no external controller needed.
Two signal relays with potential free contacts which indicate the system is allowed to load and/or charge. This can be used to switch enable/disable signals or power relays.
Possible to use two current sensors instead of one to see consumed and produced energy independently.
Wireless connection to see relevant data on your portable device.
Compatible with almost any cell chemistry including LTO, LiFePO4, NMC and NCA.
1Aamp balancing current. Even big cell capacities will be balanced.

Kit Contains

1 x Start Board

1 x End Board

2 x In-between Boards

1 x Induction coil

123 In-between Board

Extra In-between Boards for the center Cells of a Battery

You will need to add extra In-between boards to the kit for 24 and 48 volt systems

These boards are used between the Start and end boards
We suggest that you buy a kit that consists of 1 start – 1 end and 2 In-between boards Plus 1 sensor this suits 4 cells
for 24 volt you need a extra 4 In-between Boards
For 48 Volt you need a extra 12 In-between Boards

123 Smart Setup

Hardware installation

Please be aware that your battery pack contains a large amount of energy, which can be potentially dangerous. Use isolated spanners to prevent any short circuits. High inrush currents, causing arcing (sparks) and ultra-high electromagnetic levels, can easily damage electronic circuits. We therefore strongly recommend to always FIRST connect the so called “large current connections” in a new setup, and THEN separately connect the BMS boards. Step 1

Prepare the BMS boards by soldering a wire on the battery minus solder pad (marked – )

Place a cable lug on the other end of the cable to make a connection to the minus pole of the battery. Please use at least wire of 0.75 mm2 to prevent a voltage drop.

If the positive (+) hole on the cell module is too small, you can make this hole bigger with a drill. Make sure to remove the drilling dust afterwards to prevent short circuits or other unintended behaviour.

Step 2

Prepare the battery pack. A good way of doing this is indicated on step 2 image. Start cleaning the cell poles, the copper strips and cable lugs with sanding paper. Use threaded rods instead of normal bolts. Don’t forget to also attach wires to the first and last cell in the same way, and connect these to the solar panels, MPPT, charger and the load.

Step 3

Mount the cell boards on the battery pack. Make sure the Begin Board is mounted on the minus side of the total battery pack. This is the cell where the big (black) minus cable leaves the battery pack. Make sure the End Board is mounted on the plus side of the battery pack. This is the cell where the big (red) plus cable leaves the battery pack.

Step 4/5

After the Begin Board is connected correctly, the LED will start blinking every second. This shows the Begin Board is trying to send out data to the following cell board. Start making the interconnection of the Begin Board to the following cell board. Make a connection from the connector marked “OUT” on the Begin Board to the connector marked “IN” on the following cell board. It doesn’t matter which hole of the 2 pin connector you pick. Please be careful while you’re doing this, prevent short circuits.

After you have made the interconnection between the Begin Board and the first cell board you will notice the green LED on the cell board will flash as well every second. This confirms the cell board is correctly installed and the interconnection between the Boards are made correct. Now go on with the other cell boards. Make connections from the double connector marked “OUT” to the next cell board connector marked “IN”. Be careful when inserting the cable, do not use excessive force. When the flashing LEDs stop somewhere in the middle of the cell chain, there is an error, in this case check the wiring.

Step 6 Install a current sensor in the incoming power line (solar panels, MPPT, charger etc.) and connect this current sensor to the Begin Board connector ”Sensor 1”. Install the second current sensor in the power line of the consumers (inverter, motor controller etc.) and connect this sensor to the Begin Board connector ”Sensor 2”.
Please make sure the current is flowing in the right direction through the current sensor hole. Check the correct flowing direction in step 6. After the installation, check in the app if the given currents are positive values.
For example when charging, you should see a positive current number next to the solar panel image.
Both current sensors can measure bidirectional currents. It is also possible to only use one current sensor instead of two. This may be needed if you have a combined inverter/charger with a shared power cable to both inverter and charger. The BMS will work fine with just one current sensor. The drawback is that you cannot measure incoming and outgoing currents independently, but only see the current going in or out the battery pack. When connecting only one sensor, connect this to “Sensor 1” of the Begin Board and make sure the charging current follows the arrow direction as indication in the images below.

Controlling external Components
The End Board contains two signal relays with three potential free contacts (normally open, common contact, normally closed) to control external components of your off-grid system. This can be “solar chargers”, “Maximum power point trackers”, “inverters”, etc. An example is the “enable” pin on many inverters. Otherwise you can connect an energy efficient power relay which can control the battery power supply to the charger/inverter. The maximum current through the signal relays is specified in section “Specifications”.
Charge relay
There is one relay to control incoming energy components of the system, like MPPT, solar charger et. This relay is called the “CHARGE” relay. When charging is allowed the green CHARGE LED next to the CHARGE relay will flash every second.
When charging is allowed Pin 1 and 2 of the CHARGE relay contacts (see End Board details) are closed (pin 2 & 3 are open).
When charging is NOT allowed Pin 2 and 3 of the CHARGE relay contacts are closed (pin 1 & 2 are open).
Note: when switching inductive loads like a relay/contractor, make sure there is a protection against flyback of the coil. A simple example is the flyback diode parallel to the coil.
Load relay
The other relay is to control outgoing energy components of the system, like inverters or other consumers. This relay is called the “LOAD” relay. When discharging is allowed the green LOAD LED next to the LOAD relay will flash every second.
Note: when switching inductive loads like a relay/contractor, make sure there is a protection against fly back of the coil. A simple example is the flyback diode parallel to the coil. The 123SmartRelay, Victron BatteryProtect and Kilo-vac EV200 relays do not need a separate flyback protection.

Hardware setting
Begin Board ‘option switch’ functions
The option switches are used to configure the balance voltage and set the amount of cells. The switches can be changed with the supplied metal tool. This can be done while the system is active. The table below shows you the functions of the option switches.

Option switch nr 1 – 3: Please set the number of cells of your battery pack. See table for details.
Option switch nr 4 – 8: Set option switch 4 – 8 in the right positions for the balance threshold voltage you like. Above this voltage, the cell board starts balancing. See table for details. For balance voltage explanation read the text below.
Keep the batteries in perfect condition
The drawing below shows that your expensive batteries are in safe hands with 123SmartBMS gen3.
To keep batteries in the best condition, it is necessary to constantly monitor the voltage and temperature of individual cells. The voltage should stay within specified limits to prevent damage to the cells. Keeping the batteries in a safe operating temperature also prevents possible damage.
The width of the green (safe) area can be set by changing the threshold voltages V-min, V-balance and V-max. For more info about this, see section “The App”.
Conclusion: the upper limit is safe-guarded by entering V-max / V-balance, and the lower limit by V-min.

Chargery BMS

Chargery BMS Units

Special Features

1. The BMS16T V4.0 uses advanced ADC measurement technology, high accuracy, high voltage and high current

detection circuit. The maximum voltage measurements tolerance is within 5mV at up to 16S LiPo battery

(68V)

2. Support regenerative braking, during braking operation can charge the batter pack and the discharge power

(Wh) will decrease to response to the braking power.

3. Charge/discharge current up to 600A. Bigger current can be customized.

4. 1.2A per cell balance current is very useful for large capacity battery pack, the feature can resume all cell

voltage balance status at the shortest time. Over temperature protection make sure the system safety

during balance.

5. BMS16T calculate and display the charge and discharge power (Wh), generally the battery rated power is

rated voltage multiply rated battery capacity.

6. TFT LCD screen provides rich information including current, voltage, power, capacity, battery status, SOC

and temperature and so on.

7. BMS16T features a maximal safety protection, within the range parameters can be setup, BMS16T will alarm

and cutoff charge or discharge according to users’ setup, out of range of parameters, and trigged absolute

maximum ratings BMS16T will force to cutoff charge or discharge to prevent the battery from fire.

8. Minimize the power consumption by draw current from all cells or external power supply.

9. Dual power design, the unit can be powered by all cells or external power supply.

10. Detect cell count at any time, and compare with the count detected when switch on first time. If it is not

uniformity, the device will alarm and cutoff charge or discharge according to users’ setup, the feature can

prevent any cell connection from loosing.

11. Sound alarm and LED alarm will be triggered when any warning events happened, and then wait several

seconds cut off or Don’t cut off charge or discharge. The delay time can be programmed.

12. Charge relay and discharge relay are controlled independently.

13. Two temperature sensors monitor battery temperature on different position.

14. Supports upgrading the firmware program by USB port.

15. BMS16T provide users the maximal flexibility, key parameters can be programmed.

16. BMS16T display battery SOC or called battery gauge similar with car dashboard. Cell count, battery pack

voltage and battery gauge (%) is displayed simultaneously.

17. In case that the battery pack need not be charged and discharged, Press STOP button enter into sleep mode

to save energy consumption, at this mode, Charge and Discharge is forbidden, and LCD back light is off.

Press any key to resume normal work mode.

18. LCD back light ON time can be programmed to save energy, when it is OFF, press any key to resume “ON”.

Protection functions

1. Cell count error protection

2. Over charge protection

3. Under voltage protection

4. Over current protection when charge or discharge

5. Over temperature protection

6. Over differential cell voltage protection

7. Over differential battery temperature protection

8. Under SOC protection

Specifications

1. Battery range: 2S-16S LiPo & LiFe, LTO battery pack on BMS16T

2. Accurate scope of the cell voltage: -5mV/+5mV on BMS16T

3. Cell Voltage display range: 0.10~4.99V 4. The voltage of external power：15-60V

5. Balance current:1.2A per cell 6. Temperature display range:-20℃~150℃,

7. SOC indicator:  RED area @ 0~15% of SOC  YELLOW area @ 16~35% of SOC  GREEN area @ 36~100% of SOC 8. Main module Size: 124×95×30 (L×W×T, mm) or 4.88×3.74×1.18 (L×W×T, inch)

9. Main module weight: 365g excluding accessories 10. Display module size:96×80×24 (L×W×T, mm) or 3.8×3.2×0.95 (L×W×T, inch)

11. Warning LED: 11000mCd, @ 2.0V, 20mA

12. Warning beeper: 85dB @ 12V, 25mA

13. Package: AL alloy case

Special update

1. Add RS232 port, external device can read out all data from BMS16T

2. Improve cell detection accuracy

3. Add over current protection during balancing

4. Optimized SOC accuracy, new approaches are voltage based and coulomb counting, consideration the cell

impedance at the same time. Please setup accurate battery capacity on Program setup menu before using

the BMS.

5. Add current, AH and WH, SOC interface, it is easy to read charge or discharge current, capacity, power and

state of Capacity of battery pack on one interface.

6. Relay controller use 12V 3A large current regulator from 16S battery pack. it can drive larger current

mechanical and state solid relay.

7. If use external adaptor, the BMS can do 2S -16S battery, and the external voltage range is 15-60V.

Balancer

BMS16T can resume cell voltage balanced status at the shortest time, it is based on 1.2A balance current per

cell, balancing accuracy is 8mV. Balance can be operated in Storage, in charge or in discharge or in all status,

the feature can be setup on program setup menu. The balance function is disable before delivery, after the

BMS display each cell voltage, please enter into program setup menu to enable balance.

Although balance current per cell is larger than other brand BMS, Chargery BMS16T use temperature

protection prevent BMS from overheating, and has a over current protection for each cell

Daly 500A BMS

DALY BMS 4S 12V 500A LiFePO4 Battery Protection Module PCB Protection Board with Balance Leads Wires BMS for 18650 Battery Pack 12V with Cooling Fan. Note Max cell balancing amps is 39ma

Over current protection—18650 LiFePO4 battery pack will stop charge when current over 800A(AMP) and will stop discharging when current over 1500A(AMP).
Over-charge over-discharge protection—18650 LiFePO4 battery pack will stop charge when its voltage reaches 3.75V and stop discharge when its voltage reaches 2.2V.
Cell Balancing amps is 39 m/a
Temperature protection—low temperature -7℃ battery protection and high temperature 70℃ discharging battery protection.
Quality Guarantee— ISO/ FCC/ RoHS/ PSE/ CE APPROVED.
Estimated Receipt Time— within 8-14 days ( including weekends, holidays, weather, different cities and other unpredictable factors ). Tracking information available.

Product description

Adopt top quality (A-level) Seiko IC from Japan.
BMS owning waterproof patent, no worry in rainy days.
Extending battery life-span, improve performance.
Parameters:
BMS protect battery charge current: 800A.
BMS protect battery discharge current: 1500A.
BMS protect battery charge voltage: 3.75V.
BMS protect battery discharge voltage: 2.2V.
Continuous charging current: 250A.
Continuous discharging current: 500A.
Balance voltage: 3.7V. Balance amps: 0.039 (39 m/a)

Package:
3.2V LiFePO4 BMS*1, matching balance wires*1, English version wiring manual*1.

Currently unavailable.

We don’t know when or if this item will be back in stock.

Over current protection—18650 LiFePO4 battery pack will stop charge when current over 800A(AMP) and will stop discharging when current over 1500A(AMP).
Over-charge over-discharge protection—18650 LiFePO4 battery pack will stop charge when its voltage reaches 3.75V and stop discharge when its voltage reaches 2.2V.
Temperature protection—low temperature -7℃ battery protection and high temperature 70℃ discharging battery protection.
Quality Guarantee— ISO/ FCC/ RoHS/ PSE/ CE APPROVED.
Estimated Receipt Time— within 8-14 days ( including weekends, holidays, weather, different cities and other unpredictable factors ). Tracking information available.

Lynx Smart BMS LYN034160200

Victron Energy – Lynx Smart BMS 500 LYN034160200

The Lynx Smart BMS is a dedicated Battery Management System for Victron Lithium Smart Batteries. There are multiple BMS-es available for our Smart Lithium series of batteries, and the Lynx Smart is the most feature rich and complete option. Its main features are:

Built-in 500A contactor, used as a fall-back safety mechanism and also available as a remote controllable main systems switch,
Battery monitor, indicating state of charge percentage and more data,
Pre-alarm signal: provide a warning before the system shuts down due to -for example- a low cell,
Bluetooth for use with our VictronConnect App, for setup and monitoring,
Local and remote monitoring using a Victron GX device, for example the Cerbo GX.

The Lynx Distribution System

The Lynx Distribution System is a modular busbar system that incorporates DC connections, distribution, fusing, battery
monitoring and/or Lithium battery management. For more information also see the DC Distribution Systems product page.

The Lynx Distribution System consist of the following parts:

Lynx Power In – A positive and negative busbar with 4 connections for batteries or DC equipment.

Lynx Distributor – A positive and negative busbar with 4 fused connections for batteries or DC equipment together with fuse
monitoring.

Lynx Shunt VE.Can – A positive busbar with a space for a main system fuse and a negative busbar with a shunt for battery
monitoring. It has VE.Can communication for monitoring and setup with a GX device.

Lynx Smart BMS – For use together with Victron Energy Smart Lithium batteries. It contains a positive busbar with a contactor
that is driven by a battery management system (BMS) and a negative busbar with a shunt for battery monitoring. It has
Bluetooth communication for monitoring and setup via the VictronConnect App and VE.Can communication for monitoring with
a GX device and the VRM portal

Pre-charge circuit

The Lynx Smart BMS is equipped with a pre-charge circuit. This will pre charge capacitive loads such as inverters or inverter/
chargers before the contactor closes.
Checks are performed during pre-charge cycle. If the connected load is less than 20 Ohm, the current is too large or if pre-charge
is taking too long, the contactor will not close and an error will be generated.
If a pre-charge error has occurred, the Lynx Smart BMS will wait for 30 seconds and then will try again try to perform a pre-
charge. It will repeat this for maximum of 20 times.
The lynx Smart BMS pre-charge circuit has more advantages than other BMS designs that simply use a fuse

Charge and discharge control via DVCC
If a GX device is connected to the Lynx Smart BMS and “DVCC capable” Victron devices are connected to the same GX device,
the Lynx Smart BMS will control the charge and discharge functionality of these devices. This takes place via the GX device
DVCC feature (Distributed Voltage and Current Control). It is then is not necessary to wire the ATD and ATC contacts to these
devices, the GX device connection is used instead.
The Smart Lynx BMS will control the following:
• Set the charge current and charge voltages of the connected devices
• Stop discharge when there is a low cell voltage or low battery voltage
• Stop charging when a cell voltage or the battery voltage is too high
• Stop charging when the battery temperature to low or too high

Gigavac Solinoids

GX14 Non Latching Solenoid Spec Sheet

GXL14 Latching Gigavac Solenoid Spec Sheet

The GIGAVAC GX Series is hermetically sealed using our patented ceramic header. GX contactors can switch DC loads up to 800VDC. These small RoHS compliant contactors can be mounted in any position and can be used in nearly any harsh environment including under water and at temperatures from –55°C to 85°C. They are the preferred contactor (a.k.a. relay or solenoid) for heavy trucks and equipment, buses, emergency vehicles, electric vehicles, hybrid vehicles, boats, light rail, mining, oil and factory automation, power management systems for battery charging, fuel cells, battery backup, solar, wind, and wave power systems where long life and high reliability are essential. Most are cRUus recognized.

Notes & Definitions:1 Auxiliary contact rating is 2A, 24Vdc Resistive load, 100,000 cycles. Minimum current is 0.1mA, 5V. The auxiliary contact is mechanically linked to the main power contacts.
2 Contact resisitance measured at currents higher than 100A.
3 Operation time is measured at 25°C and includes maximum 7ms bounce.
4 Insulation resistance is 50 Mohms after life.
5 Contactor can operate up to 125°C in special cases – contact GIGAVAC for details.
6 Contactor has two coils. Both are used for pick-up, and then in approximately 75 milliseconds, one coil is electronically removed from the coil drive circuit. The remaining coil supplies low continuous hold power sufficient for the contactor to meet all of its specified performance specifications. This provides low coil power without PWM electronics that can cause EMI emissions and/or cross-talk on control power.
7 Contactor is operated by a coil that changes resistance with temperature. Since Pick-up Current, Coil Current and Coil Power are specified at Nominal Voltage, they will be lower than indicated at temperatures above 25°C and higher than indicated at temperatures below 25°C. Similarly, Pick-up and Drop-out Voltages will be higher than indicated at temperatures above 25°C and lower than indicated at temperatures below 25°C.
8 For pick-up testing of contactors with dual coils, the voltage can not be ramped up slowly, but must be applied instantly to at least the maximum Pick-up Voltage. Otherwise, the contactor will not pick-up.
9 Limit make current to 600A to avoid contact welding. For AC power switching cycles, contact factory.

APPLICATION NOTES
• Contactors feature internal transorb for coil suppression. No external diodes should be added across the coil. The use of additional external coil suppression can slow the release time and invalidate the life cycle ratings, or can cause the contactor not to be able to interrupt the maximum current specified. If lower coil back EMF is required, please contact GIGAVAC for assistance.
• Power switching lifecycles are based on current flow from A2(+) to A1(-). For best breaking performance, the contactor should be installed so that current flows from A2(+) to A1(-). There are cases where the contactor will interrupt power in the opposite direction but please contact GIGAVAC to confirm suitability. Direction of current flow is not relevant during make or when flowing on closed contacts. For bi-directional contactors, please contact GIGAVAC.
• Applications with capacitors will require a pre-charge circuit.
• Electrical life rating is based on resistive load with 27μH maximum inductance in circuit. Because your application may be different, we suggest you test the contactor in your circuit to verify life is as required.
• End of life is defined as when the dielectric, insulation resistance or contact resistance fails the specifications listed

Assorted Battery Management Items, For details on each Brand please select the Correct Tabs

123 Smart KIT

123SmartBMS Gen3

123 In-between Board

Extra In-between Boards for the center Cells of a Battery

123 Smart Setup

Chargery BMS

Daly 500A BMS

DALY BMS 4S 12V 500A LiFePO4 Battery Protection Module PCB Protection Board with Balance Leads Wires BMS for 18650 Battery Pack 12V with Cooling Fan. Note Max cell balancing amps is 39ma

Product description

Lynx Smart BMS LYN034160200

Gigavac Solinoids

LiFePO4 Lithium Phosphate Battery 12.8 Volt-200Ah 2.6 Kw – Smart

Storage 3.6 Kw to 100 Kw Range of Lithium Phosphate LiFePo4 Storage Batteries and Accessories

Engine Start Battery – High CCA LiFePO4 Pack 12V 600-1200CCA Lithium Phosphate Battery

TAO Advanced 12/24/48 Volt Lithium Battery Management System BMS

Assorted Battery Management Items, For details on each Brand please select the Correct Tabs

123 Smart KIT

123SmartBMS Gen3

123 In-between Board

Extra In-between Boards for the center Cells of a Battery

123 Smart Setup

Chargery BMS

Daly 500A BMS

DALY BMS 4S 12V 500A LiFePO4 Battery Protection Module PCB Protection Board with Balance Leads Wires BMS for 18650 Battery Pack 12V with Cooling Fan. Note Max cell balancing amps is 39ma

Product description

Lynx Smart BMS LYN034160200

Gigavac Solinoids

Related products

LiFePO4 Lithium Phosphate Battery 12.8 Volt-200Ah 2.6 Kw – Smart

Storage 3.6 Kw to 100 Kw Range of Lithium Phosphate LiFePo4 Storage Batteries and Accessories

Engine Start Battery – High CCA LiFePO4 Pack 12V 600-1200CCA Lithium Phosphate Battery

TAO Advanced 12/24/48 Volt Lithium Battery Management System BMS

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