Home Training Technical Articles Index  

You must disconnect your battery charger before replacing a battery.

Standby generators use an automatic battery charger. Most owners’ manuals tell you to turn the battery charger off or disconnect it before replacing the battery. The reason is many chargers produce an AC voltage once the battery is disconnected. This can damage the generator control board causing an expensive repair.

The chargers pictured above are all excellent chargers and are safe to use. These photos are for example only of what a battery charger looks like and not intended to imply that any of the above chargers can create a damaging voltage.

Just remember, the service manual says to always turn your charger off before disconnecting the battery.

Be Careful!

Generators and automatic transfer switches as well as their appurtenant devices employ high voltages that can hurt you. Do not attempt to work with this equipment unless you are qualified. Observe all rules and cautions found in the manufacturer’s manuals as well as NFPA 70E, Standard for Electrical Safety in the Workplace.

The assistance I provide is based on the questions you ask and the accuracy of the information you provide about your equipment or project. I cannot guarantee you will like or agree with my response.

Standby Power Solutions LLC disclaims any liability for any personal injury, property, or other damages of any nature whatsoever, whether special, indirect, consequential or compensatory, directly or indirectly resulting from the publication, use of, or reliance on this document. Standby Power Solutions, LLC also makes no guaranty or warranty as to the accuracy or completeness of any information contained herein. Anyone using this document should rely on his or her own independent judgment, or as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances.

©2013 by Standby Power Solutions, LLC. 1-816-373-5006. All rights reserved. Do not reproduce without express written permission.