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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.
30-Day Return Policy
We have a 30-day return policy, meaning you have 30 days after receiving your item to request a return or exchange.
Eligibility for Returns
To be eligible for a return, your item must be in the same condition that you received it—unworn or unused, including tags, instruction manuals, warranty cards, and in its original packaging. You’ll also need the receipt or proof of purchase. We reserve the right to refuse returns or assess additional fees at our discretion if the merchandise is missing parts or is not in new condition.
If your return request is accepted, we’ll send you a return shipping label and instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
To start a return, please contact us at sales@theyachtrigger.com.
Damages and Warranties
Please inspect your order upon receipt and contact us immediately if the item is defective, damaged, or if you received the wrong item. Most items we sell are covered by manufacturers' warranties. If you experience difficulty with a product, please contact the appropriate manufacturer for assistance or email us at sales@theyachtrigger.com.
Exceptions / Non-Returnable Items
Certain types of items cannot be returned, such as custom products and special orders. We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item. Unfortunately, we cannot accept returns on sale items or gift cards.
Exchanges
The fastest way to ensure you get what you want is to request a return of the item you have. Once the return is accepted, you can make a separate purchase for the new item to ensure it is in stock.
European Union 14-Day Cooling Off Period
If the merchandise is being shipped to the European Union, you have the right to cancel or return your order within 14 days, for any reason and without justification. As above, your item must be in the same condition that you received it—unworn or unused, with tags, instruction manuals, warranty cards, and in its original packaging. You’ll also need the receipt or proof of purchase.
Refunds
We will notify you once we’ve received and inspected your return and inform you if the refund was approved. When processing a refund, no additional transaction fee is incurred; however, the original credit card transaction fee is not refunded. If approved, you’ll automatically be refunded to your original payment method within 10 business days. Please allow some time for your bank or credit card company to process and post the refund. If more than 15 business days have passed since we’ve approved your return, please contact us at sales@theyachtrigger.com.
Return Policy Abuse
We reserve the right to refuse service to anyone suspected of abusing any policy of The Yacht Rigger.
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I haven't installed yet, but Mike and Andre at The Yacht Rigger have been nothing short of excellent and patient in answering my numerous questions pertaining to my project of converting my house bank to LiFePo. Will be starting on the install shortly (which will include the installation of two Class T 400A fuses as well as other items purchased from TYR).
This is a review for my complete order of 2/0 AWG Battery Cable Red and Yellow, the Victron BMV-712 Black Smart Battery Monitor, 2 ea Blue Sea 5191 Terminal Fuse Block 30-300AMP with 2 ea Blue Sea 5189 250A Fuse Terminal and 5190 Blue Sea 5190 300A Fuse Terminal (1 installed, 1 standby), and 1 Egis XD Series Single Flex 2 Relay-ACR. All installed by me as directed by The Yacht Rigger electrical experts. New dual starter battery installation was smooth and easy. Works like a champ with no issues! This is the first time since I owned this boat that I can see the stater battery condition!
This is a review for my complete order of 2/0 AWG Battery Cable Red and Yellow, the Victron BMV-712 Black Smart Battery Monitor, 2 ea Blue Sea 5191 Terminal Fuse Block 30-300AMP with 2 ea Blue Sea 5189 250A Fuse Terminal and 5190 Blue Sea 5190 300A Fuse Terminal (1 installed, 1 standby), and 1 Egis XD Series Single Flex 2 Relay-ACR. All installed by me as directed by The Yacht Rigger electrical experts. New dual starter battery installation was smooth and easy. Works like a champ with no issues!
Arco A 275 alternator is almost a perfect fit on a yanmar 4jh3e. Installed with balmar pulley kit . Easy install and fast charging .n more belt dust covering everything.
3@405 watt rec panels on top of Bimini with 2@ Hyundai bifacials on top of Atlantic tower. 1x2 “ anodised aluminum used for supports . Each panel has their own mppt charge controller due to the amount of Shade on my sailboat.panels are providing a lot of power.