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MillerTech 40Ah 12V MARINE Bluetooth Lithium Iron Phosphate (LiFePO4) Deep Cycle Battery (1240BT)

MillerTech 40Ah 12V MARINE Bluetooth Lithium Iron Phosphate (LiFePO4) Deep Cycle Battery (1240BT)

Regular price $285.00 USD
Regular price $299.00 USD Sale price $285.00 USD
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MillerTech MARINE lithium batteries are the perfect choice for your trolling motor.  They are built with Grade A lithium iron phosphate (LiFePO4 or LFP) cells and are guaranteed for 10 years with a full repair/replace warranty. They feature Bluetooth battery monitoring with a smart phone app to keep track of vitals.  Each battery will last over 3,000 cycles at the most extreme use: its full discharge rate (1C or 40A) all the way to empty (100% depth of discharge). Or if you are a lighter user it will last well over 8,000 cycles at 40% depth of discharge.

*Perfect size for running electronics on your bass boat!*

To download the owner's manual, click here.

To download the bluetooth app, search for MillerTech in the Google Play Store or Apple App Store.


40Ah 12V MARINE Bluetooth LiFePO4 Battery Specifications:

  • Energy Storage:  512Wh
  • Cell Grade:  Certified Grade A
  • Max Charge Voltage:  14.6V
  • Cut Off Voltage:  10.5V
  • Continuous Charge/discharge current:  40A
  • Peak Discharge Current:  120A for 5 seconds
  • Operating Temperature:  -4F to 140F
  • Low Temperature Charging Protection: Cutoff 30F, Reconnect 32F
  • Cell Construction:  Nano Prismatic
  • Connection Capability:  4S or 4P
  • Terminals:  M8
  • Weight:  14 pounds
  • Size:  9" x 5.5" x 8.5"
  • Warranty:  Full 10 years (not prorated)
  • Cycle life @ 100% depth of discharge:  3000+ cycles (>80% capacity remaining)
  • Cycle life @ 40% depth of discharge:  8000+ cycles (>80% capacity remaining)

To download the warranty document, click here.

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