SFK-300HP 300AH 4.0KW SELF HEATING 13.6v Lithium Iron Phosphate Battery

Sun Fun Kits
Return Policy:
30 Day Returnable - No Restocking ( Restocking Fee : $0.00 )
Shipping Availability:
2 to 3 Days
Stock Status:
In Stock

Heat Switch:
Heat Switch
This Add-on will enable full control of the 300HP's heating pads. You can now turn on your heating pads and keep your battery warm even when not charging. Makes an excellent combo with the insulated heating jacket.
Removable silicone sealant is added to the tongue and grove lid to aid in moisture resistance and thermal retention (No charge).
Lithium Charger:
Lithium Charger
The SFK-330 is a 23 amp charger and can charge your battery from 0% to 100% in about 12 hours (overnight).
Battery Cable Kit:
Great way to add a quick disconnect to your battery, rated for up to 175A.
Add Jacket:
Add Jacket
Our Regular Price: $1,750.00 (6% OFF)
Introductory Special: $1,645.00
Configuration Price: $1,675.00

Sun Fun Kits presents: The SFK-300HP Self heated lithium iron phosphate battery! Yes the lightest and most energy dense LFP battery on the market that also features built in heating elements for low temperature charging, a 200A bms, support for 4s series (48v) connections, and an easy to use smart app that allows you to monitor a single or up to 4 batteries simultaneously!


Built with certified automotive grade cells with complete manufacturer test reports, you will love the reliability of EV class cells that will stay in balance, hold voltage during heavy loads, and also have the power to output up to 2200 watts to power up even the most demanding of devices.


The SFK-300HP is hand built by Sun Fun Kits technicians in Baton Rouge, Louisiana and is built to order. This battery uses components from the United Sates, China and India and has gone through a complete balance, capacity and load test to ensure it is built to industry standards. Your battery comes ready to use and we recommend you review the user guide on how to get the optimum performance and longevity of your unit.


The SFK-300HP battery may be used anywhere typical deep cycle lead acid/agm/flooded batteries are used and does not require special charging equipment as they have built in circuitry that ensures proper charging and discharging.

  • 4.0 kilowatts of reliable lithium power, replaces up to 6 lead acid / agm batteries (100ah) and is designed to be discharged to 100% of available capacity without harm to the battery.
  • Up to 2.2 kilowatts of peak power, and 1500 watts of continuous power.
  • Expected cycle life of 2000-3000 cycles at 80% DOD, and up to 5000 cycles at 50% DOD, 10-15 year usage life.
  • Fully compatible with existing 12v infrastructure including standard 12v lead acid/agm battery chargers, trickle chargers and high voltage DC systems up to 48v (when linked in series with 4 batteries).
  • Built-in cell heaters to allow for low temperature charging, temperature to activate heaters can be set inside the app.
  • Smart phone/device compatible with Bluetooth monitoring/configurable app. Available for IOS/Android.
  • Can be linked in series up to 48v (4 batteries in series) as well as up to 4 in parallel with a combined output of 3.5 KW continuous.
  • Automatic low/high temperature and low/high voltage cut-off to stop battery damage from occurring.
  • Automatic short circuit prevention as well as over charge and over discharge prevention.
Recommended Uses

  • Use in RVs as a 12-48 volt power source, or as part of an inverter bank to provide standby power
  • Use in solar panel installs as a power source for storing power
  • Use in troller motor applications for boats (requires ensuring that the battery is isolated and protected from water intrusion)
  • Use in Golf Carts or other small electric vehicles that have amperage governors (care must be taken to ensure that the batters are protected from water intrusion)
  • As a DC power source for power supplies and other items needing DC power
  • Use in DC to AC inverters where standby / backup power is needed such as data centers, or residential power sources.

Shipping Availability 2 to 3 Days
GTIN 00850036385073
Manufacturer Sun Fun Kits
Battery Specs
Chemistry LifePo4 (lithium Iron Phosphate)
Sealant Add removable silicone sealant to lid.
Continuous Discharge (Watts) 1500
Cells 4
Battery Capacity (AH) 300
Voltage 13.6
Watt Hour Capacity (Kwh) 4.0
Max Discharge (Amps) 200
Max Charge (Amps) 80 , 160
Construction Material ABS, Aluminum, PCB
Battery Weight (Lbs) 60 , 57.8
Balance Capacity (mAH) 5200
Terminal Studs M8
Physical Specs
Item Weight 57.8
Height 245 MM , 9.65 Inch , 11 inch / 280 MM including Terminal Screw
Width 180 MM , 7.5 Inch
Length 345 MM , 13.6 Inch , 14.6 Inch / 371 MM Including handles
General Information
Service and Support Serviced, Repairs in USA
Warranty 8 Year 60/96 Month Warranty
Customer Review