THE ORIGINAL ONLINE HOME OF MILLERTECH BATTERIES SINCE 2017

  • Fisherman in a boat

    STAY OUT LONGER ON THE WATER

    Your electronics, trolling motor, and outboard will all perform better and longer with lithium batteries!

    SHOP BOAT BATTERIES 

  • BOONDOCK WITH CONFIDENCE

    Enjoy more of the comforts of home while saving precious weight and cargo space.

    SHOP RV BATTERIES 

  • SUPERCHARGE YOUR SOLAR INSTALL

    Solar is a long term investment so get a long-life battery that is more cost-effective over time.

    SHOP SOLAR BATTERIES 

INTRODUCING RACK-MOUNTABLE BATTERIES FROM MILLERTECH

Give your battery bank a professional, tidy appearance while maximizing space with this innovative battery series and stackable racking system.

SHOP LIFE BATTERIES

RECENT BATTERY BLOG POSTS

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  • Protecting Your Lithium Batteries From Cold

    Protecting Your Lithium Batteries From Cold

    As you may have heard while researching lithium batteries for your boat, RV, golf cart, or off-grid solar application, they don't like freezing temperatures.  Not only will their output and...

    Protecting Your Lithium Batteries From Cold

    As you may have heard while researching lithium batteries for your boat, RV, golf cart, or off-grid solar application, they don't like freezing temperatures.  Not only will their output and...

  • Grade A Versus Grade B Lithium Deep Cycle Batteries

    Grade A Versus Grade B Lithium Deep Cycle Batte...

    The consumer market for lithium deep cycle batteries is flooded with inexpensive batteries that are less than half the price of the established name brands in the industry. These batteries...

    Grade A Versus Grade B Lithium Deep Cycle Batte...

    The consumer market for lithium deep cycle batteries is flooded with inexpensive batteries that are less than half the price of the established name brands in the industry. These batteries...

  • How To Determine Battery Size When Switching To Lithium

    How To Determine Battery Size When Switching To...

    One of the most common questions we get from boaters and fishermen when they call us is what size deep cycle battery do I need for my electronics and/or trolling...

    How To Determine Battery Size When Switching To...

    One of the most common questions we get from boaters and fishermen when they call us is what size deep cycle battery do I need for my electronics and/or trolling...

  • All About Cold Charging Protection

    All About Cold Charging Protection

    You may have heard that lithium deep cycle batteries, including the Lithium Iron Phosphate (LFP or LiFePO4) variety, will be damaged if you charge them in cold weather.  Is it...

    3 comments

    All About Cold Charging Protection

    You may have heard that lithium deep cycle batteries, including the Lithium Iron Phosphate (LFP or LiFePO4) variety, will be damaged if you charge them in cold weather.  Is it...

    3 comments
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RECENT SOLAR BLOG POSTS

  • How To Avoid Bad Solar - 5 Tips To Make Sure You Don't Get Screwed Going Solar

    How To Avoid Bad Solar - 5 Tips To Make Sure Yo...

    As more and more people go solar, there are more and more solar companies and contractors popping up to take their money. And not all of them are trustworthy or...

    How To Avoid Bad Solar - 5 Tips To Make Sure Yo...

    As more and more people go solar, there are more and more solar companies and contractors popping up to take their money. And not all of them are trustworthy or...

  • What is the future for solar?

    What is the future for solar?

    There are bright, sunny days ahead for solar.  The adoption rate for grid tied solar has been staggering since the year 2010 (see picture below).  But with higher adoption rates,...

    What is the future for solar?

    There are bright, sunny days ahead for solar.  The adoption rate for grid tied solar has been staggering since the year 2010 (see picture below).  But with higher adoption rates,...