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Question - Touch Screen GPS - battery life

Discussion in 'Computers, Websites and Technology' started by Oxygen Thief, Apr 10, 2015.

  1. Oxygen Thief

    Oxygen Thief Admin
    Staff Member Admin

    Oct 17, 2005
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    One of my regrets is selling my old Garmin Etrex. I thought it would be replaced by the geocaching app (excellent) on my GPS equipped phone (awful). It absolutely rinses the batteries, and quite often the GPS doesn't lock on or isn't accurate.

    So, I'm thinking about buying a Dakota 20... http://www.gooutdoors.co.uk/garmin-dakota-20-gps-navigation-system-p103487
    Battery: 2 AA batteries (not included), NiMH or Lithium recommended
    Battery life: 20 hours

    or ultimately a GPSMAP62 with full UK 50k mapping... http://www.gooutdoors.co.uk/gps62s-with-full-country-p166194
    Battery: 2xAA batteries (not included)(NiMH or Lithium recommended)
    Battery life: 20hrs

    But, despite what the manufacturers say, is 20 hours a realistic battery life in service?


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  2. Lock smith

    Lock smith 28DL Full Member
    28DL Full Member

    Apr 6, 2015
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    In my experience running on lithium batteries you'll probably get that, but doubtful you will if you use alkaline batteries
    My satmap 12 seems to run forever on lithium batteries but on alkaline batteries it has a really poor runtime especially in heavy tree cover

    Lithium are expensive but they certainly seem to outlast alkaline in my experience by a factor of 6, so lithium probably works out cheaper

    Plus you don't have to carry spare batteries, which is what I like as I'm always losing one thing or another when out exploring
    Although maybe I'm just taking more stuff with me than I need lol
  3. DubbedNavigator

    DubbedNavigator 28DL Regular User
    Regular User

    Sep 11, 2008
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    Echo the comment on poor phone GPS. I made the huge mistake of relying on one last weekend, and got horribly lost - it just fell straight on its arse when it got on GPRS....
    Oxygen Thief likes this.
  4. Maniac

    Maniac rebmeM LD82
    Regular User

    Mar 5, 2007
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    The AA lithium batteries are significantly better than the NI-MH, I use them in the radio mics where I work and they last for ages!

    I use viewranger on my phone for all my navigational needs - runs offline and does not require 3G/GPRS so if you stick your phone in airplane mode, you actually get a reasonable length of time out of it, maybe not 20hrs mind, but certainly 8-10 is achieveable, but much more with with a battery pack. The GPS on my phone is pretty good thou, only is really thick cloud cover does it fail to lock on. Can't beat a dedicated GPS device thou, but for the amount I use it, it does the trick.
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