24V 80AH Heated Sport Series Lithium Battery w/ Bluetooth (2480-BTH)

THE MILLERTECH® SPORT SERIES LITHIUM BATTERY
10 YEAR GUARANTEED WARRANTY IS SIMPLE!

TERMS:

From the date of your battery purchase through year number 10 of ownership, your battery is covered. If it stops working during this time, we will repair or replace it with a battery of equal or greater value for FREE!

SHIPPING:

We cover all shipping costs associated with shuttling your battery back and forth for repair or replacement. It is our warranty; it is our cost; not yours.

EXCLUSIONS:

There are NONE! You trusted Millertech®, and if it’s within the warranty period your Millertech® battery is completely covered for everything!

PROOF OF PURCHASE:

You don’t need one. If it’s Millertech®, it’s covered!

FOR WARRANTY SERVICE CALL: 855-MAX-LITH

EMAIL:  warranty@millertechenergy.com

Recommended Chargers

The Millertech 12V 135Ah Heated Dual Purpose lithium battery is engineered for a max charge voltage of 14.4V charging profile.

1) 12V 10A Charger (1210C)

What it is: A small 110V AC plug-in lithium charger that outputs 14.6V at 10A (2-stage).  Typical speed (100Ah battery): roughly 10–12 hours from low to full (real-world varies). Why choose it:

• Most Economical option

• Good if you charge overnight or you don’t drain the battery hard each day

• Handy when charging off a solar + inverter type setup (smaller AC charger). 

2) 12V 20A Charger (1220C)

What it is: A small 110V AC plug-in lithium charger that outputs 14.6V at 20A (2-stage; automatic fuse).  Typical speed (100Ah battery): roughly 5-6 hours 

Why choose it:

• You want the same simle plug-in AC charger, but almost twice as fast

• A better option for those who use the battery hard and want same-day recharge

3) 12V 20A On-Board Charger (1220M)

What it is: The 1220M is a single-bank, permanently mounted lithium charger designed mainly for boats and other setups where the charger stays installed on the equipment. It runs on 110 V AC input and outputs about 14.5 V at 20 amps, with a charging profile designed specifically for LiFePO₄ batteries. It also has an IP65 waterproof rating, making it suitable for wet or marine environments

.  Typical speed (100Ah battery): roughly 5-6 hours 

Why choose it:

• Permanent Installation:

  • Ideal for bass boats, trolling motor batteries, or electronics batteries

  • Just plug in shore power and it charges automatically.

• Waterproof/Marine Durability:

  The IP65 waterproof rating means it can handle splashes, humidity, and vibration typical in boats.

4) 12V-24V Dark Speed “On The Run” Dual Marine Charger

A dual-output marine charger that can charge a 12V bank and a 24V bank (listed outputs: 14.5V 15A and 28.8V 15A) and is IP65. It’s designed around the idea of charging “on the run,” using your system while operating, with logic to protect/priority-manage the starting battery.

Why choose it:

• You run a 12V + 24V system (great in Marine Setups: starting/house + 24V Trolling)

• You want charging while you are out (less dependence on shore power or generator)

• You want ‘smart’ behavior (prioritize starting battery, protections, BMS wake-up)

5) 12V-36V Dark Speed “On The Run” Dual Marine Charger

Same concept as #3 above, but for 12V + 36V (outputs: 14.5V 15A and 42.6V 15A) and is IP65.

Why choose it:

• You run a 36V system 36V Trolling motor lithium bank plus a 12V battery system

• You want “all-day” convenience of topping up while operating, and the built-in protections/priority behavior