Up to eight on the Max 8.0 hub (four USB-A and four USB-C) and up to four on the Max 4.0 hub (two of each). That’s enough to keep the whole group’s phones charged at camp.

The Max 8.0 gives you roughly 15 to 20 full charges for a typical smartphone, or four to five for a mid-size laptop. The Max 4.0 gives you about half that. Those numbers assume a completely dead device charged all the way to full.

About 30,000 trail camera photos with the Max 8.0 and about 15,000 with the Max 4.0. Your count will vary with camera model, settings and temperature.

More than 2,000 times. Recharge it every few months for your trail camera and it’ll be around for a lot of hunting seasons. It has a Millertech 5 year No Hassle warranty!

1Ah equals 1,000mAh, so the Max 8.0 is a 28,000mAh battery and the Max 4.0 is a 14,000mAh battery. Watt-hours (Wh) are the fairest way to compare packs at different voltages: the Max 8.0 stores 310Wh and the Max 4.0 stores 155Wh.

The battery, a battery charger, an adjustable mounting strap and three connector cables that fit most major trail camera brands (5.5mm x 2.1mm, 4.0mm x 1.7mm and 4.8mm x 1.7mm). The USB hub, security camera adapter, splitter and 6V converter are sold separately.

Fish finders and LED lighting, too. Fish finders need a cord sold separately.

It’s a compact, rechargeable lithium battery pack, designed by Millertech, that powers your trail camera for months at a time so you’re not hiking in to swap AAs. Hang it on the tree next to the camera and plug it in. Add the slide-on USB hub and the same battery becomes a power station for phones, tablets and other USB gear at camp, on the boat or in the blind.

It’s an add-on that slides onto your auxiliary battery and turns it into a USB power station. If it charges from a USB cord, you can power it from your Millertech battery. There’s one hub for each size, sold separately:

A lightweight, rechargeable lithium battery built to handle 2,000+ recharges. It comes with a Millertech 5 year No Hassle warranty!

A five-year guaranteed warranty, and it’s simple. If your battery stops working in the first five years, we’ll repair it or replace it with one of equal or greater value, free. We pay the shipping both ways. There are no exclusions, and you don’t need proof of purchase: if it’s Millertech, it’s covered. For warranty service, call 855-MAX-LITH or email [email protected].

The Max 8.0 holds twice the energy and takes a bigger USB hub. The Max 4.0 is smaller and lighter to carry.

Right here at millertechenergy.com, or find a Millertech dealer near you on our Dealers Near Me page.

Pick the Max 8.0 if you want the longest time between trips to the tree, or you plan to charge several people’s phones and a laptop at camp. Pick the Max 4.0 if you’re running one camera, want something smaller in your pack, or you’ll only have a few devices to keep charged. Not sure? Call our Support Team at 855-MAX-LITH and tell us how you’ll use it.

Pick the Max 8.0 if you want the longest time between trips to the tree, or you plan to charge several people’s phones and a laptop at camp. Pick the Max 4.0 if you’re running one camera, want something smaller in your pack, or you’ll only have a few devices to keep charged. Not sure? Call our Support Team at 855-MAX-LITH and tell us how you’ll use it.