Sun Fun Kits 200A V2 4s Lithium BMS w/Bluetooth

Return Policy:
30 Day Returnable ( Restocking Fee : $0.00 )
Shipping Availability:
1 Day
Stock Status:
In Stock
Max Discharge (Amps)

Max Discharge (Amps)



Data Port

Data Port

RS-485 Data Port with RJ-45 Jack (not mounted)
BMS Add-Ons
BMS Add-Ons

Add Pre-crimped BMS Wires & Sized Cables.:
Heating Options:
Heating Options
Heating Pads
Includes 2 Pads
Includes 2 Pads
Data Port:
Data Port
Upgrades the BMS to include an RS-485 interface as well as a mountable RJ-45 data Port.
Our Regular Price: $199.00 (30% OFF)
On Sale: $140.00
Configuration Price: $140.00

The Sun Fun Kits 200A  V2 4S (12v) Lithium BMS is a kit ready battery management device that can be used to make your own battery packs. This is the same BMS used in our ready made heated batteries and is the preferred option for our battery kits (v3) for those looking for more power and the option to have built-in battery heating (charging only).

The BMS includes the option to have professionally crimped wires cut to the correct length for the Balancer, positive, and negative terminals. Tinned pure copper lugs are matched to fit battery terminals and posts which makes install in battery packs a breeze. No special tools needed, just a standard screw driver.


The wiring harness is designed to fit our DIY kits and include flexible silicone wires for the terminals and the battery to BMS cable. The BMS has 3 temperature probes 1 internal and 2 external which will ensure low & high temperature protection for you battery.

The SFK-200 bms features a built in heating port that can drive heating elements and provides up to 10 amps of power at 12v. The heating system will automatically turn on heating elements if the temperature falls below the low temperature threshold when the battery is being charged.

Sun Fun Kits have also created IOS and Android companion apps that are compatible with the SFK-BMS-200-4S and allow users to monitor battery operations as well as turn off charging/discharging when the battery is to be used in storage along with other battery options.

  • NEW V2 Version supports up to 4s series connection (48V total)
  • 200 Amp continuous operation capable (discharge).
  • 100 Amp charge rate.
  • Built in heating port to drive heating elements during battery charging while in below freezing temperatures.
  • Up to 2.4 kilowatts of peak power.
  • Fully compatible with Lithium Iron Phosphate chemistry and will work with  existing 12v infrastructure including standard 12v lead acid/agm battery chargers, trickle chargers.
  • Can be connected in series up to 4 units (48v) (when linked in series with 4 batteries).
  • Smart phone/device compatible with Bluetooth monitoring/configurable app. Available for IOS/Android.
  • Automatic low temperature (32 degree Fahrenheit) and low voltage cut-off (can be adjusted, default is set to 2.6v/cell) to stop battery damage from occurring. 3 separate temperature monitoring diodes.
  • Automatic short circuit prevention as well as over charge and over discharge prevention.
GTIN 00850036385141
Shipping Availability 1 Day
Manufacturer SUN FUN KITS
Battery Specs
Data Port RS-485 Data Port with RJ-45 Jack (not mounted)
Cells 4
Voltage 12 , 24 , 36 , 48
Max Discharge (Amps) 200
Max Charge (Amps) 150
Balance Capacity (AH) 150
Terminal Studs M6
Cable Specs
Wire Gauge 22 Awg w/6MM ring terminals , 6 Awg Negative Lugs , 6 Awg Dual Positive Lugs
Physical Specs
Item Weight 1 Lb
General Information
Country of Origin China
Service and Support Service & Repairs in USA
Warranty 2 Year 12/24 , Sun Fun Kits USA Warranty
Kit Configurator
Heating Options In Between Cell Heating Pads , Sidewall Cell Heating Pads
Customer Review