How to Replace Floor Scrubber Batteries for Maximum Runtime

If there is one piece of equipment that cannot afford downtime, it’s your floor scrubber. Whether you are managing a warehouse, a hospital, or a retail center, a dead battery means the job doesn't get done.

If your machine is struggling to hold a charge through a full shift, or if it feels sluggish on inclines, it is likely time to replace the power source. The good news? Upgrading to VMAX Batteries isn't just a repair—it’s a performance boost.

The Right Fit for Every Machine
Not all floor scrubbers are built the same, and neither are their battery trays. At VMAX, we specialize in Heavy Duty Deep Cycle AGM batteries designed specifically to handle the repetitive discharge and recharge cycles required by industrial cleaning machines.
We stock every major size required for the industry. Whether you have a compact walk-behind unit or a massive ride-on scrubber, we have the drop-in replacement you need, including:

GC2 (6 Volt Golf Cart Style): High-capacity options for 24V, 36V, and 48V banks.
Group 31: The heavy-duty standard for many mid-sized machines.
Group 27: Compact power for smaller footprint scrubbers.
And more: From small AGM units to massive 8D batteries.

DIY Guide: Replacing Your Floor Scrubber Batteries
Swapping out your batteries is a straightforward maintenance task that can save you service fees and get your machine back on the floor immediately.

Note: The following instructions apply to a standard 24-volt system using two 12-volt batteries (common in many walk-behind units). Always consult your machine’s manual for your specific voltage requirements.

1. Safety First
Before you grab a wrench, grab your safety gear. Wear gloves and safety glasses. Crucial: Remove any metal jewelry (rings, watches) to prevent accidental arcs, and ensure the machine is turned OFF and unplugged from the wall charger.

2. Out With the Old
Take a photo of your current wiring setup—this is your best "cheat sheet" for later.
Disconnect the Main Negative (Black) cable running from the machine to the battery.
Disconnect the Main Positive (Red) cable running from the machine to the battery.
Remove the "Jumper" cable connecting the two batteries together.
Lift the old batteries out. (Lift with your legs—deep cycle batteries are heavy!)

3. In With the New
Place your new VMAX AGM batteries into the tray. To make wiring easy, position them so the Positive terminal of one battery is close to the Negative terminal of the other.

4. The Series Connection (For 24V Systems)
To turn two 12V batteries into a 24V system, you need to wire them in Series:
The Bridge: Connect the Jumper cable from the Positive (+) of Battery A to the Negative (-) of Battery B.
The Power: Connect the machine’s Red cable to the remaining Positive (+) post.
The Ground: Connect the machine’s Black cable to the remaining Negative (-) post.

Tighten all connections securely. Loose terminals generate heat and are the #1 cause of reduced battery lifespan.

Which Battery Do I Need?
You don't need to guess. The easiest way to find the correct VMAX replacement is to look at the label on your old battery.

Find the "Group Size" (e.g., Group 31, Group 27, GC2).
Check the Voltage (6V, 8V, or 12V).
Scroll down to the product grid below.

Simply match your current battery’s size code to the VMAX options below to find your upgrade. Not sure which size you need? Contact our team for help selecting the right battery.

If you are ready for maintenance-free, vibration-resistant power that lasts longer, choose VMAX.