Question about GPS
The 478 does have a user replaceable battery, There appears to be an issue with the recharge circuit/sense on these units. Contact Garmin. There is a software upgrade.
That said, batteries typically only last a year or two so you may be at the end of its service life.
Posted on May 19, 2009
The rechargeable battery in your GPS receiver may be going bad. Over the lifetime of the battery the amount of operating time you can expect in between charges will naturally decrease until the battery gets to a point where it is no longer able to power the unit. That may be what is happening.
Unfortunately most GPS batteries are not considered to be user replaceable. You should contact Garmin to find out about battery replacement service.
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Posted on Jun 18, 2008
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Posted on Jan 02, 2017
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