24V80AH Sport Series Lithium Battery with Bluetooth (2480-BT)


Do you have a 24V trolling motor or 24V solar system. If yes then this battery is for you. With 20KWH of storage, engineered to fit within our compact group 31 case, this tank will take your power system to the next level. Built in bluetooth gives you peace of mind at your fingertips. Also has built in low-temp charging protection!

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Capacity   Voltage    Weight           Size             Warranty
 80AH        25.6V       40 lbs.    13” x 6.75” x 9”   10 years

BMS: Yes
Chemistry: LFP
Efficiency: 98%
Memory: None
Terminals: M8
Max Charge/Voltage: 29V
Low Cut-off Voltage: 22V

Max Charge/Discharge Current: 80A
Peak Discharge Current: 240A – 3 sec
Low Temp Charging Protection: Yes
Operating Temp: 32°-130°
Cell Type: 4 Parallel
Bluetooth: Yes



The 24V 80AH will power your trolling motor under heavy use for a minimum of 6+ hours. 2 of these 2V 80AH connected in parallel will power your motor for 12+ hours. We have reports of anglers using 1x 24V 80AH for multiple days without killing it. Although that is very likely true, at Millertech we believe in giving you real world numbers that do not lie. We would much rather under promise than over promise! We believe the long term results are much more important than todays fame. 


Since 2015 MillerTech has been selling thousands of batteries each year within our local Amish communities. We have developed a reputation for having the best warranty in the current Lithium Battery Market. (For this we give all Glory to God) We believe this reputation was not developed because we offered a longer or flashier warranty than anyone else, what we did was stand true to our statements and use every customer exactly like we would want to be treated in a similar situation! Our goal is to bring these same values and commitments and offer them to millions of passionate people that care about a better future in the Great USA and around the world. A warranty can be 1 year or 20 years, this warranty is still only as good as the company standing behind it. Us and our people are here ready to step up and take responsibility where it is due.


MillerTech Energy Solutions LLC (The Manufacturer) warrants each MillerTech Sport Series branded battery bought from MillerTech or one of its authorized resellers to be free of defects in materials and workmanship for a period of 10 years from the date of the original purchase. The date of purchase will be determined by the original sales receipt. If this receipt is not available the warranty will be issued using the manufacturing date printed directly on the battery. Within the first 6 years of the warranty period, subject to the exclusions listed below, the manufacturer (MillerTech) will repair (if serviceable) or replace (with a new or refurbished product with equal to, or higher value) if the components in question are determined to be defective in material or workmanship. After 6 years up to 10 years if the battery is deemed repairable, the manufacturer will repair and return the battery at no cost to the customer. If the battery is deemed to be unrepairable, the manufacturer will offer a similar battery to the customer at a discount of 50% off of the Retail Price at the time of the offer. The offer will be valid for a period of 30 days after the date of notification.


Within the first 5 years of the warranty period if it is determined by our warranty department that your battery needs further testing, MillerTech will pay all shipping charges to and from our testing facility. Within the last 5 years of this warranty period, all incoming shipping charges are the full responsibility of the customer. All outgoing shipping fees will be paid by MillerTech.


Who has time to register a warranty? With MillerTech this is not required. We want to make things simple and easy. Just save your point of purchase receipt, should you have issues and need to warranty your battery. If you happen to lose the receipt, don’t worry, each battery has a serial number that we can use!


The liability of MillerTech Energy Solutions LLC and this warranty policy shall be limited, at the sole discretion of the manufacturer to either repair or replace defective items. Any repaired or replaced items shall be of equal or greater value than the warranted product in terms of cycle life trajectory for the corresponding age of the product. If a defective product is replaced, the original unit shall become the property of MillerTech Energy Solutions LLC.

NOT COVERED BY THIS WARRANTY: The manufacturer is not obligated to warrant the battery in question if defects are related to damages caused by abuse, neglect, or from the following:
  • * Damage from shipping, loose terminal bolts, or corroded hardware.
  • * Manufacturer codes tampering or removal
  • * Failure to properly install the battery, in addition to keeping the battery properly charged and maintained.
  • * Breakage from collision, fire, or freezing which includes damage from extreme heat or cold, improper storage, water damage, or tampering.
  • * A defective (SOC) meter will not affect the performance of the lithium battery, therefore the (SOC) meter is not covered by the MillerTech warranty.
  • * The warranty does not cover a battery reaching its normal end of life which may occur prior to the warranty. As stated above. Depending on the application a battery can reach its normal life before the end of the applicable warranty period. A battery can deliver only a fixed number of usable amp-hours over its lifetime and is considered to have reached its normal end of life if the application used up all of those amp-hours, regardless of the time the battery has been in service. Therefore manufacturer reserves the right to deny a warranty claim if it determines the battery to be at its normal end of life, even if the claim is lodged within the applicable warranty period.
EMAIL:  [email protected]

If it is determined that your battery requires further inspection, arrangements will be made to ship it to the MillerTech manufacturing site. Proof of purchase is required and should include the original invoice and serial number.

Customer Reviews

Based on 6 reviews
patrick Conners
24v 80ah marine.

Very impressed so far with the longevity of the batteries. Ran 5 hours in erie with 10 mph winds still had 78% left.

Patrick Williams
Great batteries!

I’ve got the 135amp 12v and 24v 80amp. 10 hours bass fishing on the water and we still had 75% left. We have a scope, 360, and another depth finder. I bought a dynamic charger but if I’d had to do again I would not spend the money buying for fancy charger. Highly recommend MillerTech batteries!

Christopher Ratliff

Customer service and the batteries are top notch. Cant thank them enough for helping me get back on the water

Joshua Reid
Great Battery!!

Almost overkill for my Ultrex. But a long day of fishing it’ll barely run down halfway. Highly recommend.

Nathan Mast

24V80AH Sport Series Lithium Battery with Bluetooth

What the pros are saying about Miller Tech batteries

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