12V 100AH Sport Series Starting Battery Group Size 24 (12100DP-G24)

The time has come to upgrade to new lithium technology and with so many options available, Millertech stands out for checking off all of the boxes…. From size, weight, warranty, pricing, answering questions, etc…Was tired of replacing expensive AGM batteries every 3 or 4 years… and at the end of day if there is anything I can do to avoid a bad day on the water or a ruined trip… I’ll do it. Millertech and their reputation made the decision easy. Purchased 3 100ah dual purpose. Arrived on time and perform as promised. Warranty alone makes this a worthy investment and brings peace of mind. Couldn’t be happier.

The battery does the same as the cheap Walmart battery it replaced. However, I expect it to last much much longer. I have purchased several batteries from Millertech with all purchases preceded by a phone call to them to understand my options. Each time I was thoroughly impressed by their customer service. They replaced one of my batteries under warranty, no questions asked. I’ve bought other lithium batteries for boats and golf carts and Millertech is undoubtedly the only one deserving of the added cost of lithium. I will never buy another brand of lithium battery.

We purchased this battery as well as the 24V 60AH to future-proof our 18' 2018 Hewescraft that is mostly used for trout/salmon trolling and summertime swim outings in California Motherlode reservoirs. Our boat's original batteries were finally biting the dust and we were contemplating installing a livescope to increase our trolling catch rates. I wanted a large enough battery to power our to 10 Garmin screens and their associated livescope & sonar transducers for what can sometimes be 8-10hrs when we're scouting or experimenting with new lure designs. We've had two excursions since installing the new batteries and new livescope components (paired with a Monster Marine 12/24 On-The-Go Dual Charger) and the result have been wonderful. Thanks to the iphone app, I was able to see that the tarter battery never dipped below 70% after running equipment for about 6 hours (with no charging from on-the-go-charger). The trolling motor battery got down to about 45% as it was used to power our PowerTroll motor to keep us on predetermined headings paired with our 9hp kicker motor. Because of stiff headwinds, the PowerTroll was often running at level 7 (out of 10) and yet the 24V battery could have gone for almost another day in similar conditions. TL;DR These have been great batteries, and I hope they last as long as they are designed for. I feel extremely confident that our boat will never have electrical problems associated with the batteries and that it can accommodate and future electronics we decide to install.

Purchased two dual purpose 100ah to install in parallel to upgrade my Tracker Targa Mercury 150 Cranking and Accessories power system. Purchase was very simple, I received immediate customer service response when I forgot to provide my discount code at checkout and was taken care of right away. Initial customer service response was very impressive. Batteries arrived within 4 days of purchase. Batteries very well packaged and protected in shipping foam. Installation is typical nothing out of the ordinary for battery install. Battery to app integration was simple and seamless. App could use some updates and some additional user functions, but serves its purpose so far. Battery terminal protective covers or devices could be added as the ones provided do not cover all 6 exposed terminal posts, with so many exposed terminals the risk of arching is increased. Battery appears well manufactured and of quality. Hoping to get what I have paid for. 4/18/25

Great battery. No issues. App connectivity is great. Great company. Fast shipping. 10/10.

nice battery, shipping was fast, the bluetooth works perfect, will buy another battery