[millertech_product_videos]
[millertech_additional_gallery columns=”3″]
Free shipping
12V 40AH Sport Series Lithium Battery w/ Bluetooth (1240-BT)
$299.00
Applications For This Battery
12V40AH Sport Series Lithium Battery with Bluetooth and Built in low-temp charging protection! (1240-BT).
| Capacity 40AH |
Voltage 12.8V |
Weight 14 lbs |
Size 7.6” x 5.2” x 7.25” |
Warranty 10 years |
BMS: Yes
Chemistry: LFP
Efficiency: 98%
Memory: None
Max Charge/Voltage: 14.6V
Peak Discharge: 120A – 3sec
Cut-off Voltage: 10.5V
Max Charge/Discharge Current: 40A
Operating Temp: -4°F – 140°F
Low Temp Charging Protection: Yes
Cell Type: Prismatic
Bluetooth: Yes
Customer Reviews
Quality product!
12V 40AH Sport Series Lithium Battery w/ Bluetooth (1240-BT)
Wed Nov 05 2025 13:33:26 GMT+0000 (Coordinated Universal Time)
Great Product
The 40 Amp Hour is Perfect for my Garman 106SV with Live scope bundle. I’m able to fish 14 hours a day without worries.
Tue Aug 19 2025 23:21:40 GMT+0000 (Coordinated Universal Time)
12V 40AH Sport Series Lithium Battery w/ Bluetooth (1240-BT)
Wed Jun 18 2025 00:31:32 GMT+0000 (Coordinated Universal Time)
Best batteries available
Tue Apr 01 2025 14:47:46 GMT+0000 (Coordinated Universal Time)
Battery
Shipping was fast. Haven’t hooked up the battery yet but I’m sure it will work fine.
Thu Dec 05 2024 15:10:00 GMT+0000 (Coordinated Universal Time)
What the pros are saying about Millertech batteries
