The Universal Standard

12V Batteries

Our widest shelf — 12-volt starting, deep cycle and dual purpose in lithium, AGM and flooded, from compact U1 to Group 8D.

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All Voltages 6V 8V 12V 16V 24V 36V 48V 72V

12V Power

Every chemistry and every group size we build at 12 volts.

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Twelve Volts Runs Everything

The Shelf Everything Starts From

Boats, RVs, mowers, jacks, consoles — almost everything with a battery runs 12 volts somewhere. That makes this the shelf where the chemistry decision matters most, because you can buy the same 12V capacity three different ways.

45 Years of Expertise
Dependable battery solutions since day one
Warranty-Backed
Coverage terms listed on every product page
US-Based Battery Experts
Talk fitment before you buy
Trusted by Professionals
Anglers, courses, fleets and dealers alike

The Right Voltage, First Time

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Where This Voltage Is Used

The applications that run on this system voltage.

Lithium vs. Lead-Acid

Why Pro-Guide customers make the switch.

Specification Lead-Acid (standard) Pro-Guide LiFePO4
Weight ~65–70 lbs per battery ~24–28 lbs per battery
Lifespan 1–2 years typical 10+ years
Charge time 8+ hours 2–3 hours
Maintenance Regular watering and terminal checks None
Warranty 90 days – 1 year 10-year limited + 36-month free replacement

Compare 12V Batteries

Because our customers shop by the numbers.

ModelVoltageCapacityGroup SizeBest ForPrice
12V 100AH Group 24 LiFePO4 Deep Cycle Battery 12 100AH 24 All-day 12V electronics and house loads $699.99
12V 300AH Group 8D LiFePO4 Deep Cycle Battery 12 300AH 8D Largest 12V bank we build $1,499.99
12V Group 31 AGM Deep Cycle Battery 12 — 31 Sealed AGM deep cycle on a budget $450.95

Frequently Asked Questions

Choosing the Right Battery

What does LiFePO4 mean, and why does Pro-Guide use it?

LiFePO4 — lithium iron phosphate — is the most thermally stable lithium chemistry in common use. Compared with lead-acid it holds voltage under load far longer, weighs a fraction as much for the same usable capacity, and needs no watering or terminal maintenance.

How do I know which group size I need?

Group size describes the case dimensions and terminal layout, not the capacity. Match the group size stamped on your current battery — every product page lists the group size and dimensions so you can confirm it fits the tray you already have.

How many amp hours do I actually need?

Add up the amp draw of everything the battery has to run, multiply by the hours you want between charges, and leave some headroom. If you would rather not do the math, our team will size it with you over the phone.

Charging & Maintenance

Can I keep using my existing lead-acid charger?

A lead-acid charger can undercharge a lithium pack and shorten its life. Use a lithium-compatible charger — everything in our Lithium-Compatible collection is profiled for LiFePO4.

What maintenance do these batteries need?

None of the routine watering or terminal cleaning that flooded lead-acid requires. The built-in BMS manages charge and discharge protection automatically.

Warranty & Support

What warranty comes with these batteries?

Terms vary by product line — the term for each battery is listed on its product page, and the full details are on our Warranty Information page. Register your battery online after purchase to activate coverage.

What if I am still not sure which one to buy?

Call our US-based battery team on 1-800-827-3232 before you order. Tell us the machine, the tray you are working with and how long you need to run between charges, and we will point you at the right part number, or message us.

Find Your 12V Battery

Narrow by chemistry and group size, or ask us to match your part number.

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