yogazoo Posted February 9, 2008 Share Posted February 9, 2008 (edited) A little background... UNIT 1) I had recieved my first Colorado 300 on January 18th. I was immediately dissapointed with the battery life. I couldn't even get 2 hours of 100% backlight from a set of fresh NIMH eneloops. I had noticed that this unit had the clock memory issue and sent it back for replacement. UNIT 2) I recieved this unit and the only difference in operation was that the clock memory actually worked. Still got lousy battery life, but at least it worked. I noticed some residue under the LCD cover and sent this unit back for replacement. UNIT 3) I recieved this unit and immediately noticed the higher serial # (16900027**) compared to both the older units (in the hundreds). I immediately loaded the new versions (2.3/2.6) with the updater and noticed something I didn't see before. In the web-updater dialogue box it said "GARMIN CHIPSET TYPE M". ??? Yeah, the other units didn't give me this dialogue. Whats was up? I went on to notice that this unit operated just fine, i.e. the clock kept the time when off, the alarm worked, BUT the barometer failed to log data when the unit was off, even if SAVE ALWAYS was chosen. Hmmm. Also strangely enough the backlight blinks every so often when the unit is off. I know, wierd right? Wait it gets better... Tonight I was able to test the battery life with the "M" chips. Man, was I blown away!! On a set of freshly charged eneloop NIMH rechargables I got just over FIVE HOURS with a 100% backlight and full battery meter for 3 1/2 of those!! WOW. Man it blew me away. I had WAAS on and the compass off and the battery type set to NIMH. Let me be clear, I only tested how long the unit remained at the 100% backlight level. Based upon this though it is a vast improvement. Total run times may or may not be affected. I hope for the sake of everyone out there with "G" chips that they can craft some firmware to fix the efficiency. This explains the dichotomy between those who reported 5 hours and those who reported 2 (hours of 100% backlight before autodimming). Edited February 9, 2008 by yogazoo Quote Link to comment
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