The Marantec 167329 Battery Back Up is an OEM accessory designed to keep compatible Marantec garage door openers operating during a power outage. Installed alongside the opener, it provides temporary DC power so you can open and close the door when utility power is unavailable, helping maintain access and security. It is suitable as a replacement part for an existing backup unit or as an upgrade on operators that support a battery-backup module, automatically charging from the opener when AC power is present and supplying power during interruptions.
Typical use is in residential garage door opener applications where reliable access is needed regardless of power conditions. Installation generally involves mounting the backup unit near the operator and connecting it to the opener’s dedicated battery-backup input as specified in the opener’s manual; after installation, allow it to charge fully before testing. For safety, ensure your opener’s photoelectric safety sensors are installed and aligned, test the system periodically under backup power, and replace the pack when capacity declines. Compatibility depends on the specific opener model and production version; verify support for part number 167329 in your operator’s documentation or with Marantec to confirm a proper match.