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Electronics, Lighting, & Gadgets HRM, GPS, MP3, HID. Whether it's got an acronym or not, here's where you'll find discussions on all sorts of tools, toys and gadgets.

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Old 01-15-14, 12:10 PM   #26
gecho
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My Garmin 800 lasted 13:20 on 320km ride but I was cutting it close. Next time I'll take my external battery pack to top it up.
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Old 01-15-14, 06:36 PM   #27
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Just noticed Garmin makes an external battery pack, specifically aimed to the ultra-long distance (or time, I suppose) riders out there.

http://www.artscyclery.com/Garmin_Ex...rumb=RDMACCESS
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Old 01-15-14, 06:44 PM   #28
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Originally Posted by KenshiBiker View Post
Just noticed Garmin makes an external battery pack, specifically aimed to the ultra-long distance (or time, I suppose) riders out there.

http://www.artscyclery.com/Garmin_Ex...rumb=RDMACCESS
It's $90. You don't have to spend that much. Though, it does address the issue of where to put the battery. It also provides a solar panel to recharge it (but probably it's too slow to be very useful).

Last edited by njkayaker; 01-15-14 at 06:47 PM.
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Old 01-16-14, 11:25 AM   #29
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I pointed out in an earlier post that Gomadic has an external AA battery pack for $20 that powers the 500 in operation. You can use rechargeable AAs if desired and they also sell dedicated rechargeable aux power packs. All allow the 500 to operate drawing power from the aux pack.
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Old 01-16-14, 10:29 PM   #30
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The Garmin 500 is rated at 18hrs.
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Old 01-16-14, 10:40 PM   #31
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Great info, everybody. This has been super informative, so thank you. It sounds like there isn't really an easy GPS option with the features I want and the battery life I need, so I think I'm just going to stick with something from CatEye for now.

Thanks again to everybody to chimed in.
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Old 02-05-14, 10:31 PM   #32
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Just to throw a coda on this, I thought I'd mention that I ended up getting CatEye's Strada Digital Wireless. I got the version with cadence, but skipped the heart monitor. I'm using Strava's app on my phone for basic GPS tracking, which is working out pretty well so far. I sacrifice the altimeter I wanted, but really I just lose the grade, since my phone will give me a raw elevation. I don't expect my phone to last a double century with the app running, but for training, this is a pretty solid compromise.
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Old 02-18-14, 08:41 PM   #33
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We have two 510s . Have ridden two centuries but on training rides i charge after about 200 miles or so. I know the 510 has 2 gps settings, one with just US sats and one that adds russian sats. The manual says adding the Russian ones drains life, as does running other things like backlight etc.
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Old 02-18-14, 11:54 PM   #34
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turning off GPS on an Edge 500 yields 25 hours of run time

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But that is useless for cycling.
Power and/or heart rate and elapsed time are all you need when riding. After the fact cadence can be interesting (how low do you need to go before you get too fatigued for today's ride or tomorrow's at a given output?). GPS is just a bonus.

I bought my $149 Garmin 500 because it was the least expensive way to get recording with one second intervals with a back lit screen.
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Old 02-19-14, 04:55 PM   #35
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Originally Posted by Curbendo View Post
Just to throw a coda on this, I thought I'd mention that I ended up getting CatEye's Strada Digital Wireless. I got the version with cadence, but skipped the heart monitor. I'm using Strava's app on my phone for basic GPS tracking, which is working out pretty well so far. I sacrifice the altimeter I wanted, but really I just lose the grade, since my phone will give me a raw elevation. I don't expect my phone to last a double century with the app running, but for training, this is a pretty solid compromise.
I have now switched over completely to my phone for a bike computer. I'm using an iPhone with an iBattz case. The neat thing about this is that you can change the battery in the case so you basically have unlimited battery power. It uses the i9300 batteries (ironically for a Samsung phone) which are cheap and plentiful. I attach it to the bike with the http://www.quadlockcase.com. The iPhone battery plus one battery in the case is good for 10 hours. I have four batteries, so that would probably go for more than 24 hours if needed.

J
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Old 02-25-14, 12:36 AM   #36
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I know you said just a single charge, but how about replaceable batteries? I'm pretty happy with my Garmin Dakota 20, which takes rechargeable AAs.
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Old 03-02-14, 08:38 PM   #37
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Garmin indicates it and other devices will last "up to 17 hours." Seems like a red flag to me, since I find specs usually err on the most optimistic/unrealistic side..
I use Garmin Forerunner 305 for the last 3 years. Its a multi sport GPS. Garmin website say it have 10 hrs of battery life. Fully charged and set up for less accurate tracking - it always lasted around 12 hrs. First I get a message that battery is low, but I still get around 2 more hours. It was the same when it was new, and now even after 3 years of heavy use. It seems that they didn't cut any corners on quality of their batteries.
If this is the same for newer versions - 17 hours may end up being 20 or more.
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Old 04-19-14, 04:15 AM   #38
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I don't expect my phone to last a double century with the app running, but for training, this is a pretty solid compromise.
I plan to attempt my first double century this summer. I intend to use the mapmyride app on my Iphone. My phone has a mophi, which is supposed to double the battery life. I will still be close I think, as it will probably take a good 16 hours. I was looking for another possible source, but just found out today that my son is ditching his mophi, b/c it was too bulky for his pocket. So with an extra mophi, should be covered.
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Old 04-19-14, 12:07 PM   #39
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I plan to attempt my first double century this summer. I intend to use the mapmyride app on my Iphone. My phone has a mophi, which is supposed to double the battery life. I will still be close I think, as it will probably take a good 16 hours. I was looking for another possible source, but just found out today that my son is ditching his mophi, b/c it was too bulky for his pocket. So with an extra mophi, should be covered.
I ended up doing something similar. I got a Mophie Powerstation Mini and a 1 ft cord with a left angle micro usb plug, and it fit very neatly with my Android in my top tube bag. Its 2500mAh is good for almost exactly one full charge, and it charges reasonably quickly. To play it safe, I turned off the wifi and mobile data to conserve juice, but the Strava app just needs the GPS active to gather data. I think I plugged it in around the ten hour mark when I had about 15% of my original charge left, then unplugged it an hour or two later when the Mophie had fully discharged. Overall, it was probably seventeen hours between wall outlets, and I think I still had like 40% remaining.
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