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MillerTech 12V 40AH Sport Series Lithium Battery with Bluetooth (1240-BT)


12V 40AH Sport Series Lithium Battery with Bluetooth (1240-BT) MillerTech

Introducing the MillerTech 12V 40AH Sport Series Lithium Battery with Bluetooth (1240-BT). 

The Sport Series Marine batteries are engineered to endure the harshest conditions. Featuring a custom case design for easy repair access and strategically placed vents to prevent rain and dirt accumulation, these batteries offer unmatched durability and convenience.

Voltage 12.8V
Capacity 40AH
Weight 14 lbs
Chemistry LFP
BMS Yes
Efficiency 98%
Memory None
Max Charge/Voltage 14.6V
Cut-off Voltage 10.5V
Max charge/Discharge Current 40A
Peak Discharge Current 120A – 3 Sec.
Low Temp Charging Protection  Yes
Connection Capability 4S-4P
Operating Temp 32°-130° F
Cell Type Prismatic
Bluetooth Yes
Warranty 10 years

Free shipping on a variety of products!

As soon as your product is on its way out of the warehouse, we will email you the tracking number for your shipment. 

Free Shipping on a variety of products! If the product you're interested includes free shipping, it will be indicated on the product page. Otherwise, shipping costs will be calculated based on the size of the package and your location.

No Risk Damage Policy

Easy Returns

For more information about Shipping and Returns CLICK HERE

Price Guarantee

We care about our customers and want to offer the best prices available for our top notch products.

Conditions of our 100% Price Match Guarantee:

  • The item must be purchased from us before we can match it

  • Buy one, get one free offers and Rebates are not eligible

  • The item must be in stock on the competitors website

  • The competitor must be an online store, not a retail location

  • The website can't be a discounter or auction website ( such as eBay, overstock, etc.)

  • The company must be an Authorized Retailer of the product in question

  • The Price Match Guarantee is based on the final price of the product including shipping and taxes

  1. We care about you. We don't want to just sell you something and never hear from you again. We know that in order to get return business, we need to provide not only good products, but good customer service.
  2. We're a family owned business! My wife and I run Wild Oak Trail, and when you buy from our store, you're actually making a difference to our family!
  3. We LOVE being prepared. In uncertain times, it feels really good knowing that we have backup power, food and water ready to go!
  4. We source QUALITY. We expect every one of our customers to be happy with their purchase and tell their friends and family about it!