SFK-275SE 12v 275 AH 3.6 kWh Smart Active Balance Endurance Battery Lithium Iron Phosphate

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SFK-275SE Battery

• 275 AH/3.6 kWh Capacity
• Low/High Temp. Protection
• Smart BMS W/Bluetooth
• RS-485 Data Port (Optional)
• Multifunction I/O
• 150A Discharge
• Serviceable / Upgradeable

CERTIFIED

ESS GRADE

Every SFK-275SE 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. ll Sun Fun Kits batteries use Certified Automotive Grade Cells.

Victron (Cerbo Gx)

The SFK-275SE is Victron comms ready and supports multiple batteries!

The GEN2B Switch allows users to disable Bluetooth functionality, control the Smart Active Balancer in 3 modes.

GEN 2B includes the ability to view internal battery temperature via a button press.

 

 

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-275SE 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 5 years with our USA warranty (60 months full replacement, and 36 months prorated).

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 lightest battery in it's class at only 55.65 Lbs., while also heaving the smallest possible footprint.

Bespoke Construction using purpose built casings, not generic space wasting molds common form many Asian brands.

Bespoke
Construction

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

A 5 Amp active balancer ensures the SFK-275SE's cells do not drift like other batteries. Certified ESS cells ensure long usage life worry free.

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Sun Fun Kits presents: The SFK-275SE Smart Endurance Active Balancing Battery! Yes the lightest and most energy dense LFP battery on the market that also features  a 150 amp bms, support for 4s series (48v) connections, active balancing and balancing control, and an easy to use smart app that allows you to monitor a single or up to 4 batteries simultaneously!

The GEN 2B  switch gives users greater control over their battery as now the Bluetooth system can be turned on or off with a touch of the button giving increased security. Users are now able to fully manage the built-in active balancer as it can be set to run in normal mode, in hi-mode (here the active balancer will only turn on when the battery is over 13.3 volts), or it can be turned off entirely and the battery will use passive BMS balancing to manage the cells. Finally we have added a button to view internal battery temperature via a button press (this is represented using different colors to indicate battery temperature).

Built with certified ESS (Energy Storage System) cells with complete manufacturer test reports and certified to UL1973 standards, you will love the reliability of ESS cells that will stay in balance, have a long service life, and also have the power to output up to 1800 watts of  power. ESS cells have  an increased   cycle life of 6000 cycles at 80% depth of discharge, or up to 8000 cycles at 50% depth of discharge compared to automotive grade cells.

The SFK-275SE 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-275SE battery may be used anywhere where 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 5 lead acid / agm batteries (100ah) and is designed to be discharged to 100% of available capacity without harm to the battery.
• Up to 1.8 kilowatts of peak power, and 1250 watts of continuous power.
• Expected cycle life of 6000 cycles at 80% DOD, and up to 8000 cycles at 50% DOD, 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).
• Smart phone/device compatible with Bluetooth monitoring/configurable app. Available for IOS/Android.
• Bluetooth functionality can be disabled for extra security
• Onboard temperature monitoring via the GEN 2 B switch
• 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.
• Active Balancing System that allows up to 5 amps of cell balancing, can be configured to always run, or turn on only when the battery is near full, or disabled (use bms passive balancing).
• Optional RS-485 data port to allow for integration with smart/closed loop systems such as the Victron Cerbo GX.
• 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.
• Serviceable and upgradeable allowing users to replace BMS, cells, wiring, battery wiring and more.
• 7 Year USA Warranty (when installed through the certified Sun Fun Kits dealer network), 5 year USA warranty for direct purchases or webstores.

An excellent budget battery for those do not require built in heating. Built with the same certified cells as the 275EX, the SFK-275SE includes options such as the GEN2B Switch, RS-485 data port, Victron Communication, and is also the lightest battery we sell (under 56 lbs).

• 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.