SFK-275EX 12v 275 AH 3.6 KW Endurance Dual Heat Lithium Iron Phosphate Battery

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• 260AH/3.4KW CAPACITY
• LOW TEMPERATURE HEATING
• SMART BMS W/BLUETOOTH
• COMPATIBLE WITH AGM/PB
• CHARGING EQUIPMENT
• 200A DISCHARGE (120 SEC)
• SERVICEABLE / UPGRADEABLE
• EXTENDED 6000 CYCLE LIFE

CERTIFIED AUTOMOTIVE GRADE

Every SFK-275EX has its UNIQUE manufacturer test report and cell data on the battery. TRY IT OUT! Scan the QR code on this image with your phone and you will see the capacity tests, manufacture date, IR and voltage values as well as batch ids of each cell used in your battery. Sun Fun Kits batteries use Certified Automotive Grade Cells.

SFK-200V2 SMART BMS

The SFK-200V2 BMS is the heart of the SFK-275EX. A smart BMS that features 3 temperature probes, heating element support, powerful BMS management apps (Android & IOS), up to 2.6KW maximum duty, low/high voltage protection, support for 48v (4s) in series, and an intelligent nuvoton MCU.

USA WARRANTY & SUPPORT

All Sun Fun Kits products & batteries are built, warrantied, and supported in the USA in our facility in Baton Rouge, Louisiana. You will not need to call overseas in the middle of the night to get help, contact us or any of our growing list of dealers to help resolve any of your issues.

4 (48V) SERIES OR PARALLEL

The SFK-275EX is one of the very few batteries on the market that can be connected in series up to 48V while also including functionality to allow for low temperature self heating. You can also parallel your batteries with up to 4 units (bus bars are needed to ensure proper balancing).

Sun Fun Kits batteries are designed to be serviceable and upgradable which means you can easily change components or service your battery; but you won't have to worry about this because you're covered for 8 years with our USA warranty (60 months full replacement, and 36 months prorated).

LOW TEMPERATURE HEATING

High quality silicone rubber heating pads ensure your SFK-275EX stays nice and warm during cold weather charging. The system is automatic and does not require jumper cables or switches. Simply set the minimum required temperature in the SFK BMS app and your battery will begin to heat itself so you can charge your battery safely.

The Sun Fun Kits Smart BMS allows you to configure your batteries to suit your needs. Use Multi-View to see the combined output of multiple batteries, set charge and discharge limits in tools, or benchmark your battery to see its performance.

The SFK-275EX has 6 heating modes :
Automatic Low Temp Charging, and 5 manual pre-conditioning heating modes (with the external switch).

Coupled with Sun Fun Kits insulated jacket, it makes the SFK-260EX the ultimate cold weather battery.

100's of cycles later and your battery
will remain balanced guaranteed!

A 5 Amp active balancer ensures the SFK-2EX's cells do not drift like other batteries. Certified Automotive cells ensure long usage life worry free.

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Sun Fun Kits presents: The SFK-275EX Self heated lithium iron phosphate battery! Yes one of 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 and ESS 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 2400 watts to power up even the most demanding of devices.

The SFK-275EX 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-275EX 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.

• 3.6 kilowatt hours 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 2.4 kilowatts of peak power, and 1500 watts of continuous power.
• Expected cycle life of 6000 cycles at 80% DOD, and up to 8000 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 6.0 KW continuous.
• Automatic low/high temperature and low/high voltage cut-off to stop battery damage from occurring.
• Dual Heating Modes in either Standby or Automatic when charging under low temperature.
• Automatic short circuit prevention as well as over charge and over discharge prevention.

• 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.