What’s the Difference Between Dual Purpose and Deep Cycle?
A deep cycle battery delivers steady power over a long time, like a trolling motor needs. A Dual Purpose battery does that too, and it also has the cranking amps to start large marine engines. Use it as one battery for starting plus graphs and accessories.
Which Pros Run Millertech Batteries?
Millertech’s pro team includes some of the biggest names in bass fishing:
• Jacob Wheeler
• Kevin VanDam
• Greg Hackney
• Brent Ehrler
• Dustin Connell
• Nick LeBrun
• Justin Lucas
• Mark Zona
• Anthony Gagliardi
• Brent Chapman
• Jacob Powroznik
• Greg Vinson
• About a dozen more, listed on the partners page: https://millertechenergy.com/partners/
Will Forward-Facing Sonar Drain My Battery Faster?
It adds load. A forward-facing sonar unit typically draws about 3–5A, depending on brightness and settings.
Will Lithium Fix the Noise on My Sonar Screen?
A dedicated Millertech Electronics battery gives your graphs clean, steady voltage. That means "consistently clearer images and stronger signals."
Will My Trolling Motor Have Full Power All Day?
Yes. LiFePO4 has a very flat discharge curve, so voltage stays steady instead of sagging the way lead-acid does. Your motor pulls as hard at 3 p.m. as it did at sunrise. In Greg Hackney’s words: “I can just stand on my trolling motor ALL DAY LONG — it can be cold, hot, it doesn’t make any difference.”
Will Summer Heat in a Closed Compartment Hurt My Batteries?
Sport Series batteries are rated to operate up to 140°F. The built-in BMS also protects against internal over-temperature.
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