PLC (Programmable Logic Control) Batteries

Reliable Backup Power for Your Industrial Controls

Programmable Logic Controllers (PLCs) are the "brains" of your machinery, and the battery inside plays a vital role. While your system usually runs on main power, the PLC battery is what preserves your unique programming and data during a power failure or when the machine is turned off for maintenance. If that battery fails, you risk losing your settings, which can lead to hours of reprogramming and lost productivity.

We stock a specialized range of PLC batteries designed to meet the exact voltage and connector requirements of your specific controller. Whether you need a 3.6V Lithium battery or a specific lead-wire connector, we make it easy to find a reliable replacement that fits perfectly.

Why Order Your PLC Batteries from Battery Mart?

• Broad Compatibility: We stock replacements for many different PLC models across all major manufacturers like Modicon, Omron, and Panasonic.
• Quality You Can Trust: Industrial environments are tough. Our batteries are built to handle the demands of professional use.
• 1-Year Warranty: Every PLC battery we sell is backed by our one-year warranty, giving you peace of mind that your equipment is protected.
• Expert Support: Not sure which battery your controller takes? Our team can help you identify the correct replacement based on your part number or device model.

Frequently Asked Questions

How often should I replace my PLC battery?

Most manufacturers recommend replacing your PLC battery every 2 to 3 years as a part of regular preventative maintenance. It is much safer to replace the battery early than to wait for a "Low Battery" light, which could mean you are only minutes away from losing your data.

Will I lose my program if I change the battery?

In most cases, if you change the battery while the PLC is powered on, the internal capacitor will hold the memory, and you will not lose your program. However, we always recommend having a current backup of your program saved elsewhere before performing any maintenance.

How do I find the right battery for my PLC?

The easiest way is to look for the part number printed on your current battery. You can also search our site by the brand and model number of your PLC unit. Because these batteries often use specific plugs or connectors, we provide detailed photos to help you match your battery exactly.

What happens if the PLC battery dies?

If the battery dies while the power is off, the PLC will likely lose its "volatile" memory. This means the custom logic and settings that run your machine will be wiped, and the unit will need to be reloaded with its original software before it can work again.