Sun Fun Kits SFK-260 User manual

sunfunkits.com
SFK-260/275EX USER MANUAL
REVISION 1.5

01
SFK-260/275EX Lithium Iron Phosphate
TABLE OF CONTENTS
INTRODUCTION 02
WEIGHT & DIMENSIONS 05
SAFETY 06
GENERAL USAGE 07
SAFE MODE 09
MAX AMPS & VOLTAGE 09
CHARGING & DISCHARGING 12
LOW TEMP CHARGING 13
MAINTENANCE 15
MULTIBATTERY SETUPS 17
IOS & ANDROID APPS 22
BMS ALERTS 24
MULTIVIEW 35
8 YEAR WARRANTY 41
LEGAL INFORMATION 43
TEST REPORT & QR CODE 46

02
SFK-260/275EX Lithium Iron Phosphate
Introduction
THANK YOU
Thank you for purchasing your Sun Fun Kits battery kit system, your battery has been hand built by Sun
Fun Kits technicians in our Baton Rouge (Louisiana, USA) facility using components from China, United
States, and India. We have tested your battery by performing 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
this manual on how to get the optimum performance and longevity of your unit.
We have built the SFK-260/275EX battery to be serviceable and upgradeable, this allows for efficient
service and repairs and ensures product longevity. The nature of kit built products comes with some con-
siderations; they are not as rugged as non serviceable products so care needs to be given when handling
battery kits. However non serviceable products generally have to be disposed of in case of issues (regard-
less of how insignificant) this contributes to e-waste and is against many right to repair laws; because of
this we feel our kit approach offers the best in reliability and longevity for our customers.
Please review this usage manual before using your battery/kit to ensure many years of reliable use. NOTE:
The battery will arrive with approximately 35% SOC (state of charge) and should be charged to 80-100%
before use. This is necessary to comply with shipping regulations; see the charging section for details.
Introduction
OVERVIEW
The SFK-260/275EX is a high performance battery made with EVE, REPT, LISHEN, or CALB certified au-
tomotive grade cells, under optimal conditions it can provide up to 6000 cycles at a depth of discharge of
80% and has an expected life cycle of about 12-15 years. Below we highlight some of the core features of
this unit:

03
SFK-260/275EX Lithium Iron Phosphate
Made in the USA with domestic and globally sourced components in our facility in Baton Rouge,
Louisiana.
Made with CERTIFIED AUTOMOTIVE GRADE cells. Every cell in our batteries has its full auto-
motive grade report on its label and this can also be viewed on our website by logging into your
account. Sun Fun Kits batteries DO NOT use reject / failed / grade B cells in their construction as is
the case with practically all batteries coming straight from China and being sold online by retailers.
Upgradable and serviceable, features a tongue & groove construction to allow for sealing the lid to
the body for marine use (can be done with permanent or removable sealant).
USA 8 year warranty including all support, service, and repair in the USA.
Introduction
CONSTRUCTION
3.4-3.6 kilowatt-hours of reliable lithium power, replaces up to 5 lead acid / agm batteries (100ah)
and is designed to be fully utilized 0-100%
2.2 kilowatts of peak power, and 1500 watts of continuous power. Using Amp Boost, max output
increases to 2.4 kilowatts with 200 amp discharge.
Expected cycle life of 6000 cycles at 80% depth of discharge, and up to 7000 cycles at 50% depth
of discharge, 12-15 year usage life.
Introduction
PERFORMANCE

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SFK-260/275EX Lithium Iron Phosphate
Fully compatible with existing 12v infrastructure including standard 12v lead acid/agm battery char-
gers, trickle chargers and high voltage DC systems up to 48v (when in 4s series configuration).
High and low temperature protection including built in heating pads to allow for low temperature
charging.
Automatic low/high voltage cut-off to stop battery damage from occurring.
Automatic short circuit prevention as well as overcharge and over discharge prevention.
Only 57.7 lbs, one of the lightest watt / pound batteries on the market.
The battery can be monitored via bluetooth and has apps for Apple IOS & Google Android; view
the status of charge, the health of your cells, power output, temperature readings and more.
Users can adjust battery parameters such as setting up power output limits, max/min soc, turn the
battery on or off via a software switch and also set up pin code protected access to the battery.
View the combined output of multiple batteries using multi-view; supports up to 4 batteries at the
same time.
Coming Soon: Wireless to inverter communication, send battery information to many inverter
makes & models such as: Victron, Voltronix (MMPT Solar, EG4, PowMR, Growatt, Renogy), Magnum
energy and more.
Introduction
SMART FEATURES