Yes, if you use the battery back up feature and keep power alive the unit will store the data and provide warm starts. The ISM400x GPS do not require the battery back up.
Does the ISM300x store Ephemeris data automatically?
Warning: count(): Parameter must be an array or an object that implements Countable in /hermes/bosnacweb09/bosnacweb09ad/b1528/ipg.lindatierney/public_html/wp-content/plugins/q-and-a/inc/functions.php on line 252