Sun Fun Kits SFK-315EX User Manual

315 ah | 4.1 kwh | 12.8v deep cycle lithium iron phosphate battery

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315EX/EX+

315 AH | 4.1 kWh | 12.8v Deep Cycle Lithium Iron

Phosphate Battery

REVISION 1.4

sunfunkits.com

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Page 1 315EX/EX+ 315 AH | 4.1 kWh | 12.8v Deep Cycle Lithium Iron Phosphate Battery REVISION 1.4 sunfunkits.com...
Page 2: Table Of Contents
315EX/EX+ 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 �� 10 Low Temp Charging �� 13 Gen 2 Switch ��...
Page 3: Introduction
Lithium Iron Phosphate Introduction Thank you for purchasing your Sun Fun Kits battery, your battery has been hand built by Sun Fun Kits technicians in our Baton Rouge (Louisiana, USA) facility using components from China, The 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.
Page 4 Every cell in our battery has its manufacturer testing report on its label and this can also be viewed on our website by logging into your account or scanning the qr code on the battery. Sun Fun Kits batteries DO NOT use reject / failed / grade B cells which do not have test reports or valid manufacturing QR codes..
Page 5: Smart Features
315EX/EX+ Lithium Iron Phosphate 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 in 4s series configuration). High and low temperature protection including built in heating pads to allow for low temperature charging or standby heating.
Page 6: Weight & Dimensions
315EX/EX+ Lithium Iron Phosphate Weight & Dimensions WIDTH: 7.5” HEIGHT: 10.6” Physical, terminal studs will add 1”, total height combined is 11.6” LENGTH: 14.6” (including handles) Physical Attribute Value Notes Width 190 MM , 7.5 Inch The width will tapper out 6mm from the bottom to top.
Page 7: Safety
Lithium Iron Phosphate Safety Sun Fun Kits recommends an experienced electrician setup your battery bank system, or you have extensive knowledge and experience in setting up high power DC systems. Setting up batteries improperly can result in severe injury and even death. Please take...
Page 8: General Usage
(FAA transportation study https://www.fire.tc.faa.gov/pdf/TC-16-17.pdf). Sun Fun Kits LifePo4 batteries may be used anywhere typical deep cycle lead acid/agm/ flooded batteries are used and do not require special charging equipment as they have built in circuitry that ensures proper charging and discharging. It is recommended that you use lithium LifePo4 chargers whenever possible or set your charging apparatus to the AGM charging profile to ensure that your batteries can get fully charged.
Page 9 136v-400-watt-30-amp-lithium-charger-lifepo4 ) charger that can be used to fully charge your LifePo4 batteries for customers looking for a stand-alone wall outlet charger. Here are some acceptable uses for the SFK-315EX/EX+ battery: Use in RVs as a 12-48 volt power source, or as part of an inverter bank to provide...
Page 10: Safe Mode
12v charger. Max Amps & Vol tage Sun Fun Kits SFK315EX/EX+ batteries can be connected in parallel or in series. You can connect up to 4 batteries in series to achieve a maximum voltage of 58 volts (this is generally shown as 48v, the nominal reading) and you can parallel these batteries up to 4 units.
Page 11: Charging & Discharging
*For power requirements greater than 4 kw continuous, you will need to have multiple banks of batteries connected to different inverters / dc banks. Sun Fun kits recommends using the highest possible voltage available in your power system for multi battery setups, and limiting the total output to below 125 amps for continuous use, we also recommend using 2 awg or lower pure copper wire.
Page 12 315EX/EX+ Lithium Iron Phosphate The charging and discharging parameters for the SFK-315EX/EX+ are listed below: Parameter Value Notes Low voltage cut-off 10.0-12.0 volts / 2.5 - 3.0 Battery will go into Safe Mode at this volts (cell) voltage, may be adjusted in the Sun Fun Kits BMS App.
Page 13: Maintenance
Maintenance Sun Fun Kits Lithium Iron Phosphate batteries require minimal maintenance and do not need to have any liquid added to them such as water (as is the case with flooded lead acid) in order to keep charge. The only maintenance required is to ensure that the state of charge of the battery is in a reasonable state depending on how it is being used.
Page 14: Low Temp Charging
315EX/EX+ Lithium Iron Phosphate State of Charge Recommended Use Notes Low charge! 15% or lower Charge This is a low SOC, do not keep your battery battery ASAP. in this state for a long period of time or it will cause permanent damage to it. Low Temp Charging The SFK315EX/EX+ is equipped with internal heating elements (silicone rubber heater pads) that are designed to turn on and warm up the battery during cold environments...
Page 15: Gen 2 Switch
315EX/EX+ Lithium Iron Phosphate Gen 2 Switch The SFK GEN 2 B switch expands the functionality of the battery by allowing the users to monitor and control various functions such as enabling / disabling Bluetooth connectivity, setting up active balancer behavior, and having a way to monitor internal battery temperature while the battery is in use or at idle.
Page 16: Data Port
BMS data from the battery. The official SFK data cable is recommended for best results. Sun Fun Kits will be releasing the SFK HUB soon that will allow the SFK315EX/EX+ to communicate with lithium compatible inverters & chargers via a hard link, the data port option is highly recommended for customers looking for hardware integrations such as the Victron Multipluss and Cerbo Gx family or products.
Page 17: Inverter Settings
315EX/EX+ Lithium Iron Phosphate Inverter Settings The SFK315EX/EX+ is able to work with almost any 12v based inverter or charge converter as LFP chemistry by its nature allows it to be a drop-in replacement battery. If your device has a lithium mode, you can select this setting for optimal lithium settings. You can also use the guide below to configure your charging/inverter settings if you have a user defined settings or want to set custom settings for best compatibility with your device: Parameter...
Page 18: Victron Settings
Only genuine SFK data cables are supported by the driver. The Cerbo Gx is a popular device that is used in many Victron Energy setups. The SFK-315EX/EX+ when equipped with the data port and the SFK RS-485 data cable is Victron Communications ready with the installation of the SFK Ve- nus OS driver.
Page 19: Maintenance
315EX/EX+ Lithium Iron Phosphate Maintenance It is recommended to periodically inspect your wiring schematic and ensure all bolts and terminals are properly installed and tight. Depending on the discharge/charge rate you may experience loosening of terminals due to thermal expansion. If this occurs you will need to re-tighten your bolts.
Page 20 315EX/EX+ Lithium Iron Phosphate We only recommend opening the lid of your battery with hand tools and not with powered screwdrivers or impact drivers. Only use insulated tools when working with the battery with its lid open. Ensure the wires are tight and make good contact with components, tighten if needed.
Page 21: Multi-Battery Setups
NOTE: for many parallel setups we recommend the use of a common DC bus bar with equal wire lengths to ensure proper load splitting. The Sun Fun Kits DC Bus Bar works great for most parallel setups: https://www.sunfunkits.com/product/35/heavy-duty-bus- bars-250a-600v . We always recommend you consult an electrician before proceeding to ensure your loads are adequately spread among your batteries.
Page 22: Parallel Operation
315EX/EX+ Lithium Iron Phosphate Parallel Operation The most common parallel setup is the 2P setup, where two batteries are connected in parallel thereby increasing battery capacity to 630 AH while keeping the voltage at 13.6 volts. These setups can be used with piggyback cables, or can be set up using DC bus bars.
Page 23 945AH and 1260AH respectively. dedicated bus bars are required for 3P and 4P setups. Sun Fun Kits does not support more than 4P connections due to the very high amp loads it can generate.
Page 24: Series Operation
315EX/EX+ Lithium Iron Phosphate Series Operation With series configurations, you can increase your overall pack voltage while keeping the capacity the same. Below we show a 2S and a 2S2P setup (where two sets of 24v batteries are connected in parallel to increase voltage and capacity) this provides 24V - 315AH and 24v - 660AH respectively.
Page 25 SFK315EX/EX+, anything greater than this will permanently damage your battery. 3S setups are not as common but provide 36 volts which is used by some marine troller motors. 4S (48v) is the highest series configuration supported by the SFK-315EX/EX+ battery.
Page 26: Ios & Android Apps
Android devices), these apps are available at no charge and can work with all Sun Fun Kits products. Below we provide a basic overview of the app’s features (images in this manual are from the android version of the app):...
Page 27 315EX/EX+ Lithium Iron Phosphate NOTE: Quitting the app will not close the app as it will continue to run in the background, use your device’s close app feature to permanently close the app. PIN CODE: If you have setup an access pin the device will ask you for the 6 digit pin MAIN TAB After downloading and connecting to your battery you can view information in 5 tabs.
Page 28 315EX/EX+ Lithium Iron Phosphate We explain what the icons represent in the list below and are starting with the newest options that are available in the latest firmware for the SFK315EX/EX+ battery: SOC Lower Limit This shows the lower SOC limit of the battery, once the soc meter reaches a value set by the user in the tools tab, the battery will disable discharging.
Page 29 315EX/EX+ Lithium Iron Phosphate Charging Discharging Status Charging Enabled Charging Disabled This symbol indicates that charging This symbol indicates that charging for the battery is enabled. for the battery is disabled. Discharging Disabled Discharging Enabled This symbol indicates that This symbol indicates that discharging for the battery is discharging for the battery is enabled.
Page 30 315EX/EX+ Lithium Iron Phosphate Details & Tools Tab The details tab includes many sub-tabs which can allow you to drill down and view detailed battery information. The details tab provides additional information for your battery, this can be useful in finding out issues you may be experiencing such as HVC or LVC (high/low voltage cut-off).
Page 31 315EX/EX+ Lithium Iron Phosphate The tools tab is a powerful device management system that allows you to set parameters for the SFK315EX/EX+ battery, these options are discussed below: Battery Output: You can set options on your unit to enable or disable charging and discharging.
Page 32 The heating pad test function allows users to verify the heating pads are working properly; this is normally used by Sun Fun Kits technicians to verify heating pad functionality but it is now available to all users. To test heating pads, click the orange button and the app and will send a command to run the heating pads for about 15 seconds (you can view the amps being used on the main tab).
Page 33 / discharging at set state of charge in the inverter settings and this may conflict with the SFK-315EX/EX+ if it also has its own state of charge limits that differ from the inverter/charger settings.
Page 34 315EX/EX+ Lithium Iron Phosphate Maximum Charge Amps: This setting allows you to adjust the maximum amperage going into your battery during charging. This setting can be useful if your setup is using higher gauge wiring or you do not want to overload your charging NOTE: apparatus.
Page 35 Sun Fun Kits to unlock your battery. You also have the option to disable the pin code; once updated, the app will no longer request a pin code to grant access to battery information.
Page 36 5-9 hours to complete. An Android based tablet is the recommended device for most tests. You can view the results on your device, or upload them to the Sun Fun Kits’ website to share with SFK technicians or your friends.
Page 37: Bms Alert & Error Log
315EX/EX+ Lithium Iron Phosphate Bms Alert & Error Log The logs tab will show you a summary of alerts & errors generated by the BMS inside your battery. This tab can help diagnose recurring issues you may be experiencing. NOTE: not all alerts are considered to be issues, it is Cell &...
Page 38: Ex+ Exclusive Features
315EX/EX+ Lithium Iron Phosphate Ex+ Exclusive Features The SFK315EX/EX+ is available in 2 versions, the EX series and the EX+ series. The EX+ variant of the battery features a new communications module that enhances the connectivity stack of the battery by adding support for Thread & Zigbee protocols. Additionally the logging system has been expanded to record the battery’s condition and usage to provide users with a long term view on it’s health and performance.
Page 39 315EX/EX+ Lithium Iron Phosphate No. of hours at high temperature: Shows the number of hours the battery has been kept in high temperature (100° Fahrenheit or 38° Celsius or higher). It is recommended to keep the batteries at around 70° Fahrenheit or 24° Celsius for the longest usage life. No.
Page 40 315EX/EX+ Lithium Iron Phosphate Bms Alerts Cell Condition Normal This symbol indicates that the battery is in normal condition and is operating optimally. Cell Overvolt Disables charging if the voltage of any cell exceeds 3.65. Charging is re-enabled when the cell’s voltage falls to 3.5. Cell Undervolt Disables discharging if any cell’s voltage drops below 2.5 - 2.9 volts (depending on the settings in tools).
Page 41 315EX/EX+ Lithium Iron Phosphate Bms Alerts Charge Over Temp Battery temperature exceeded the high temp threshold (130° F) during charging. Charging will be enabled once internal temperature falls below 115° F. Charge Under Temp Battery temperature is below the threshold (34° - 55° F) while charging. Heating pads will turn on and charging will be re-enabled once internal temperature rises above 40°...
Page 42 315EX/EX+ Lithium Iron Phosphate Bms Alerts SOC Limit If you have set an upper soc limit of less than 100% or a lower soc limit above 0%, you will see a SOC Limit alert to you that either the upper or lower limit has been reached.
Page 43 BMS damage. Charging / Discharging functions will be disabled until the short circuit has been corrected. Front-end IC Error This is a hardware error, please contact Sun Fun Kits Techs to request repair service for your battery. You can also submit a ticket online: https://www.sunfunkits.com/app/support...
Page 44 Accessing this menu requires an access code that is only available to Sun Fun Kits Dealers and Sun Fun Kits Techs, you must contact them to obtain the code in order to access this menu.
Page 45: About Tab
Sun Fun Kits will be releasing options to update the firmware, however, this requires the Data Port add-on as well as the official RS-485 Sun...
Page 46 Lithium Iron Phosphate APP LINKS: You can find the Sun Fun Kits BMS app on your device’s app store; if you are having difficulty, use the links below to go directly to the device listing: Sun Fun Kits BMS App for Android devices (Tablets & Smartphones): https://play.google.com/store/apps/details?id=com.companyname.sfkble&hl=en_US&gl=US...
Page 47: Multi-View
315EX/EX+ Lithium Iron Phosphate Multi-View With Multi-View, the Sun Fun Kits BMS app allows you to simultaneously view up to 6 devices. Multi-View will also show the combined amp and watt output of your batteries. NOTE: when connected in multi-view, many details such as tools and device details will not be available;...
Page 48 315EX/EX+ Lithium Iron Phosphate The Multi-View system allows you to view up to 6 batteries simultaneously. Here you can view a condensed version of information that is normally available when you connect to a single battery at a time. Due to space constraints some information is not displayed or has been truncated to fit on screen.
Page 49 315EX/EX+ Lithium Iron Phosphate Mul ti-View Details & Tools Tab When connected to Multi- View you will notice various options that differ from the single view. Here you can analyze information that represents all of your connected batteries as a single bank.
Page 50 315EX/EX+ Lithium Iron Phosphate Auto Dashboard When the SFK315EX/EX+ is used in a small UTV or golf cart, customers can utilize the Auto Dashboard which will allow them to see a condensed view that will show the speed, state of charge (shown as a fuel pump icon), power output, and battery temperatures.
Page 51 315EX/EX+ Lithium Iron Phosphate Virtual Battery Settings: Multi-view supports saving battery configurations as virtual batteries. Virtual batteries are a quick way to reconnect to a configuration you have set up, e.g. if you have 2 batteries in parallel 12v, you can now save them as a virtual battery in the app.
Page 52 315EX/EX+ Lithium Iron Phosphate Temperature Units: Temperature units control how the temperature is displayed in multi-view. You can select between Celsius or Fahrenheit. Uneven Warnings: When connected to multiple batteries or a virtual battery, the SFK BMS app can inform you if deviation is detected in the amp draw or voltage among the batteries;...
Page 53: 10 Year Warranty
Lithium Iron Phosphate 10 Year Warranty Sun Fun Kits guarantees purchases made from its website or authorized retailers are free from manufacturer defects and will repair or replace battery and kits that fail to meet specifications at our discretion within the warranty period. Warranty is only offered to the original purchaser and will require a warranty transfer to any user that the battery has been sold to thereafter by the end user (limited to a maximum of 1 transfer).
Page 54 OEM specifications. Doing so will void the warranty. Changing BMS parameters with unauthorized tools Customer agrees to only use official Sun Fun Kits software tools made for IOS / Android / Windows to manage battery systems, the use of unauthorized software tools will void the warranty.
Page 55 Battery and kits must not be exposed to temperatures greater than 110° Fahrenheit or lower than 20° for an extended period (greater than 4 hours) NOTE: Sun Fun Kits BMS system keeps an internal log and Sun Fun Kits technicians can determine if proper maintenance was not done.
Page 56: Legal Information
Lithium Iron Phosphate Legal Information Sun Fun Kits LLC DBA Sun Fun Kits offers its products with the terms, conditions and notices as follows: The following terms and conditions apply to all sales and uses. Please review carefully. These terms and conditions include limited warranties and disclaimers of liabilities.
Page 57 In no event shall Sun Fun Kits; liability exceed the value of the product(s) sold. In no event shall Sun Fun Kits’ be liable for any direct, indirect, punitive, incidental, special or consequential damages whatsoever arising out of or connected with the use or misuse of any of its products.
Page 58: Applicable Law
Lithium Iron Phosphate Applicable Law Any and all disputes or claims relating in any way while using your Sun Fun Kits products or services will be resolved by arbitration rather than in court by the American Arbitration Association (AAA). Either party Sun Fun Kits or the customer may initiate the claim.
Page 59: Test Report & Qr Code
315EX/EX+ Lithium Iron Phosphate Modif ications To Terms Sun Fun Kits reserves the right to change the terms, conditions, and notices under which it’s products are offered at any time. Test Report & QR Code Technician Notes:...
Page 60 Share with us twitter.com/sunfunkits Share a photo of you new SFK battery in action! @sfkbattery and use #sunfunkits Sun Fun Kits LLC 11636 Industriplex Blvd Baton Rouge, Louisiana, 70809 United States of America 1-225-289-6525 www.sunfunkits.com cs@sunfunkits.com FCC ID: QDS-BRCM1078 sunfunkits.com...

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