PS BATTERIES in GPS technology and devices Posted December 2, 2007 I own a Garmin GPSMAP 60CXs and was wondering what the best battery option is. Re-chargables or Energizer Lithiums ? I use Energizer rechargeable NiMH batteries in a garmin gpsmap76. They seem to last quite well between charges but power level indicated [by the GPSr] tends to drop away very sharply nearing recharge time. A cable for the car cigarette lighter is next on my shopping list.