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Portable battery bank for Garmin Varia

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Portable battery bank for Garmin Varia

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Old 05-01-22, 09:48 AM
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drshadowblack
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Portable battery bank for Garmin Varia

Hello,

Does anyone have any suggestions for a portable battery pack to charge the Garmin Varia headlamp and tail radar? These devices have shorter battery life and I've ran out of battery on several of my longer rides. Thoughts?
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Old 05-01-22, 09:51 AM
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Polaris OBark
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I have the first gen Varia radar, and I still get a full day out of the battery, despite having used it since around 2015. The battery lasts longer if you run the light in the flash mode. Any portable battery pack should work. I have no experience with the headlight. It might be more expedient to use a cheaper Cygolite on longer rides (or at least bring it as a backup).
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Old 05-01-22, 10:20 AM
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Originally Posted by drshadowblack
Hello,

Does anyone have any suggestions for a portable battery pack to charge the Garmin Varia headlamp and tail radar? These devices have shorter battery life and I've ran out of battery on several of my longer rides. Thoughts?
doesn't the varia not work while charging? when i plug mine in, it immediately disconnects and the light turns off. or are you thinking of charging while on a break? in that case, any small USB power bank would do as the varia charges at around 4.3 watts (according to a charger i have with an output display) and probably has a battery of around 10Wh (based on how long it takes to charge and the weight.) i'd probably get the smallest one i could find with an integrated micro usb cable.

as noted above, remember that the battery lasts ±6 hours in solid light mode and ±14 hours in flashing mode...
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Old 05-01-22, 10:45 AM
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How long are your long rides? I've never come close to out-riding a full battery in Daylight Flash (or whatever the mode is called), despite doing several centuries per year.
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Old 05-01-22, 11:15 AM
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I use a GoalZero flip24 (6700mAh) and stash it either in the seat tube bag or seat bag and run a USB cable to the device. Given the size of the Garmin Varia and head lamp I guess the internal battery is 2000-3000mAh, don't know for sure, so you get about 2~3 recharges with this kind of setup. I only carry one flip and switch it around based on who needs extra juice. The GoalZero is slightly more expensive per mAh then some other USB recharge stations you can buy, but I think they're a bit more rugged and standup to outdoor abuse a little better.
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Old 05-01-22, 04:44 PM
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Old 05-01-22, 04:50 PM
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Shane Miller, (Gplama ) in a video I watched the other day, shows a battery pack connected to the Varia. Does not really discuss it to much, but does go over some batter saving tips.

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Old 05-01-22, 06:31 PM
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Flash mode is 15 hours.
If you really feel the need for a solid light, get a cheap one and add that in addition to the varia's light.
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Old 05-02-22, 08:18 AM
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Of note..........folks "trick" the usb devices that want to stop working when charging by utilizing a special usb cable with a different pin order that causes the device to charge while operating.

I know this from an old topic on here from the randoneurring folks doing this with those little lipstick battery packs and their gps. They could charge the gps while still going.

For the rear light, just cable tie one of those chargers under the saddle and plug the special cable to the Varia then switch on the charger when necessary. Same for front.

I think it's a "usb charge only pinout" as the usb cables included with these devices have the data pins also usually.
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