U1 Battery Store

U1 batteries are the most commonly used sealed lead acid battery for mobility scooters and power chairs, particularly for—but not restricted to—the ever popular Pride Mobility brands (Pride mobility chairs, and Jazzy and Jet power chairs) and Invacare brand mobility scooters. The U1 battery has achieved its remarkable market share through its reputation for being the ideal tradeoff between battery size and battery range. Depending on battery manufacturer, a group U1 battery can be rated anywhere between 31 Amp-hours (Ah) and 35 Amp-hours.

NOTE: For a limited time only, receive FREE USPS Priority Mail shipping on all U1 mobility batteries! Offer is valid for batteries shipped within the United States only. Free shipping will be applied to your shopping cart automatically.

What is a Sealed Lead Acid (SLA) Battery?

Rechargeable sealed lead acid (SLA) batteries are the most common battery found in scooters and motorcycles. A rechargeable SLA battery contains electrodes of lead and lead oxide suspended in sulfuric acid. As the lead and the sulfuric acid combine, there is a significant electrical discharge as a byproduct of the chemical reaction. This discharge in turn powers your scooter’s motor or electric ignition system. Sealed lead acid batteries have a low power-to-weight ratio compared to other commercially available batteries, which makes them ideal for high current applications such as mobility or recreational scooters.

How do I know if I need a U1 Battery?

As a general rule, you should always check the owner’s manual for your mobility scooter or power chair prior to purchasing a replacement battery. The U1 battery can be listed in documentation in a few different ways, but we at Monster Scooter Parts have seen it most commonly listed as "U1 Batteries (AGM/GEL)" and "31-35 Ah Batteries)". In the absence of the owner’s manual or other information direct from the manufacturer, a group U1 battery can be identified by reading the label on the battery cell. Any sealed lead acid battery rated at 12 volts with an Amp-hour rating of 31 through 35 is a U1 battery.

The following is a listing of U1 battery part numbers from some of the most prolific battery manufacturers:

MK Battery MU-1 SLD A

MK Battery MU-1 SLD M

Universal Battery UB12350

BB Battery EB50-12

BB Battery BP35-12H

BB Battery BP35-12S

BB Battery BP35-12F

IBT Battery BT33-12HC

IBT Battery BT35-12HC

Powercell Battery PC33-12

Powercell Battery PC33-12M

Powersonic Battery PS-12350

Rhino Battery 33-12

Rhino Battery 33-12FP