What are you folks using as a portable emergency charger for your wahoo/garmin/cell phone when out on rides that might last longer than your batteries? Thanks!
Goal Zero or Anker are my preferred brands. A 2500-3000 mAh pack will keep a Garmin 820 going through the entire DK200 as long as your settings are reasonable (i.e. not running backlight and map view all day). 5000 mAh should provide enough for a Garmin and a solid one charge boost for your phone.
Agree with the above, and a second vote for Anker. I bought a larger model (slightly larger than a deck of cards) that is 13,000mAh, mainly because it had two output ports instead of one. This gives you the option to charge a light or a cell phone at the same time as your Garmin, or vice versa.
stud.beefpile wrote:A 2500-3000 mAh pack will keep a Garmin 820 going through the entire DK200 as long as your settings are reasonable (i.e. not running backlight and map view all day).
Huh, so is the main driver for increased battery use just having the map view up and not running a course?
I attended a session at my local bike shop where a purported employee of Garmin (I didn't know this individual personally, thus the "purported") recommended the information I presented above (regarding ONLY the 2500-3000 mAh battery back supplementing the onboard Garmin battery and minimal backlight and little or no map view use).
I completed the 2017 DK200 in roughly 19 hours, and can vouch for the above information. I ran the turn-by-turn prompts in the data view exclusively (with NO map view at the turning prompts) with automatic backlighting adjustment on, and still had capacity in my supplemental (2500-3000 mAh) USB battery pack when I crossed the finish line. This was with a Garmin 820. I started the day with the supplemental battery pack (charged and) plugged into my Garmin which also started with a 100% charge.
Not sure if this would help you guys, but Garmin not giving the device battery ratings was really hampering my lifespan estimates. They only give the device ratings in hours, which is not only subjective for the reasons you've listed above, but also very generous. But, they did give the mAh rating for their new battery pack, which is 3100mAh. They also give an hour estimation of 24hrs, which is based on the Edge 1030. The Edge 1030 is given a rating of 20hrs, so we can assume the battery size is roughly 2600mAh. The Edge 1000 is rated at 15hrs, so the battery should be around 1950mAh. This equates to about 130mah per hour, so then you can calculate you external battery pack's lifespan from there. Hopefully that's useful to someone; I already did the math so why not share it?
