inputs.text: worked great easy replace - worked great easy replacethere several youtube videos showing replacement process separating case little bit scary ultimately open correctly important thing remember cut wire separately avoid shorting garmin heat shrink tubing cover solder leads available auto supply stores soldering two wires new battery use small soldering iron not put much heatafter replacement new battery lasted approximately 9 hours 3 3 hour outings needing recharged much better one old one replaced