Millertech 12V 40AH Sport Series Lithium Battery with Bluetooth

This 12.8V 40AH lithium battery delivers reliable power with high efficiency and long cycle life, making it ideal for marine, RV, or trolling motor applications. Built with LFP (LiFePO4) prismatic cells and equipped with a Battery Management System (BMS), it ensures safe operation, durable performance, and convenient monitoring via Bluetooth. Its lightweight design and full 10-year warranty make it a dependable choice for both heavy and moderate use.

Product Details

• Capacity: 40AH
• Voltage: 12.8V
• Weight: 14 lbs
• Size: 7.6” x 5.2” x 7.25”
• Warranty: 10 years
• BMS: Yes
• Chemistry: LFP (LiFePO4)
• Efficiency: 98%
• Memory Effect: None
• Max Charge Voltage: 14.6V
• Peak Discharge: 120A for 3 seconds
• Cut-off Voltage: 10V
• Max Charge/Discharge Current: 40A
• Operating Temperature: 32°F – 130°F
• Cell Type: Prismatic
• Bluetooth: Yes
• Low-Temperature Charging Protection: Yes

Product Features

• Lightweight and compact design for easy installation
• High efficiency (98%) for extended runtime
• Built-in BMS for safety and performance monitoring
• Bluetooth-enabled for real-time monitoring via smartphone
• Durable LFP chemistry for long cycle life
• Supports high peak discharge for demanding applications
• Low-temperature charging protection for safe operation
• 10-year full warranty ensures reliability and peace of mind