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[Closed] Edge 820 with external battery

sockpuppet

Posts: 2057

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Topic starter

Does the Garmin edge 820 work while running off an external battery?

Not into dynamos and recharging (yet) but interested in boosting the life to allow longer rides (12hr+, up to 24hr) to be tracked.

I know some garmins work fine, some won't play while connected. Anybody got a definitive answer for the 820?

Spotted it for £256 in Canyon.com, and I'm tempted!

Posted : 01/02/2017 8:29 pm

dovebiker

Posts: 6926

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I've used a 18500 800mAh lithium USB top-up cell on my 800 - worked fine.

Posted : 01/02/2017 9:27 pm

dantsw13

Posts: 8469

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Yes, I have a little toptube bag that I use on long rides with a battery & food in it.

Posted : 01/02/2017 10:00 pm

sockpuppet

Posts: 2057

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Topic starter

Sounds good, cheers chaps

Posted : 01/02/2017 11:07 pm

breninbeener

Posts: 2819

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Dont u need a power lead with one of the pins disabled...or as soon as you plut the power in it goes into data transfer mode and stops recording your ride?

Posted : 02/02/2017 11:50 am

Mowgli

Posts: 1058

Free Member

So long as the two data pins in the USB cable aren't connected at the battery end it'll work. Otherwise it might think it's connected to a computer and won't work.

Posted : 02/02/2017 11:54 am

scud

Posts: 4108

Free Member

I found the USB lead from a Lezyne light good as they are "power only" not "data and power"

Posted : 02/02/2017 1:06 pm

ratherbeintobago

Posts: 8806

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Dont u need a power lead with one of the pins disabled...or as soon as you plut the power in it goes into data transfer mode and stops recording your ride?

Was certainly true of the 500; I [i]thought[/i] Garmin had addressed this?

Posted : 04/02/2017 1:02 pm