BatteriesAmerica.com has a cell pack pre-configured for this. Just search garmin 696 on their site. Just bought one last month, good service and delivery
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William Slaughter
Houston, TX
RV-8QB
This is definitely a "some assembly required" project, but no additional stuff needs to be purchased. Once you cut the plastic case open, you can compare the existing install and the new cell pack to see what gets reused. This project requires some solid soldering skills.
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William Slaughter
Houston, TX
RV-8QB