Rescuing A Rescue Device With A DIY Battery Pack

A hobbyist reverse-engineered a McMurdo Personal Locator Beacon to build a DIY replacement battery pack after finding official replacements expensive and hard to obtain. The pack uses a custom PCB and two off-the-shelf 6V lithium manganese dioxide cells housed in a 3D printed, potting-compound-sealed enclosure that slots into the device. The creator explicitly warns this is for backup use only and recommends a genuine battery for actual emergency reliance.

Source: https://hackaday.com/2026/09/03/rescuing-a-rescue-device-with-a-diy-battery-pack. 8 Sync News only summarizes and links out; content copyright belongs to the authors and original sources.