Charging aftershokz in the field
This is a bit of an obscure question, but maybe someone here has figured out a solution.
I've got an Aftershokz Aeropex headset that I wear when riding. I've found that it will charge from a charger plugged into a wall socket, but not from a USB power bank--it draws so little power when charging that the power bank just shuts off after a minute. I'm wondering if anyone has found a magic power bank that will charge it, or knows of a way to force a power bank to keep charging it. I've got an upcoming event that will last considerably longer than the batteries on the headset, so I'd like to be able to recharge it in the field. I'll have a pit station, but without utilities, so I'll need to provide my own power. I'm not going to rent or borrow a gas generator just for this. |
Good question - essentially you're looking for a powerbank with a very low threshhold for auto-shutoff.
Just tried my Aeropex with the Aukey powerbank I had handy and it shuts off as you describe. . Here's a thought - what if you try a two-port powerbank and plug your phone into the 2nd port? Would that keep it awake sufficiently? Or perhaps one of those USB fans? Basically something to draw enough current to keep the powerbank from shutting itself off. |
If you are looking for something with a low constant draw on a USB port, perhaps something like:
https://www.ikea.com/us/en/p/jansjoe...lack-70291232/ |
I wondered whether having two drains on a USB power bank would keep it awake. It seems that they're smart enough to have separate detection on each port, which means I've been outsmarted. Perhaps if I had a really old and dumb power bank…
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I picked up one of these on a recommendation from Klite, for that exact reason. It has an on switch you need to press to start charging, which is maybe they key.
https://www.jaycar.com.au/5000mah-po...-bank/p/MB3724 |
Hmm. That particular item is out of stock and discontinued (also halfway around the world), but I did do a little more snooping, which led me to this (being offered by the same place I got my K-lite system), which advertises "provide low-current flow with no automatic shut off (this is critical for some low-current-draw devices - like the 40mA kLite Qube)"
Spendy for a power bank, but I may give it a shot. |
That Voltaic battery was $29 until last August when they hiked the price 30%.
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Originally Posted by adamrice
(Post 22368872)
I wondered whether having two drains on a USB power bank would keep it awake. It seems that they're smart enough to have separate detection on each port, which means I've been outsmarted. Perhaps if I had a really old and dumb power bank…
https://www.amazon.com/usb-y-splitte...splitter+cable |
Originally Posted by gpburdell
(Post 22369576)
Maybe use a splitter so both draws are from the same port?
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Originally Posted by adamrice
(Post 22369584)
Maybe? Hadn't thought of that.
Or perhaps a tiny two or three port hub? Example only, I've not tried this one - https://www.amazon.com/Splitter-LOBK.../dp/B095YBDCP2 |
I use power banks that are shells for 18650 batteries. The brand name is Tomo. My Aftershokz are OpenComm and I also have wired Sportz Titanium. They draw around 100mA when charged, 80mA for OpenComm and 125mA for Sportz. Those banks seem to charge them without shutting down.
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Originally Posted by 2_i
(Post 22370955)
I use power banks that are shells for 18650 batteries. The brand name is Tomo. My Aftershokz are OpenComm and I also have wired Sportz Titanium. They draw around 100mA when charged, 80mA for OpenComm and 125mA for Sportz. Those banks seem to charge them without shutting down.
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Originally Posted by BikeLite
(Post 22372049)
Do you like the Tomo P2 or another one?
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Originally Posted by 2_i
(Post 22370955)
I use power banks that are shells for 18650 batteries.
It's a technical challenge to design a current controlled circuit to be stable from zero current on up, so I suppose I shouldn't have been surprised that they refuse to charge at lower current draw |
Originally Posted by unterhausen
(Post 22374775)
I always called these "lipstick" batteries. I don't think they have enough circuitry to shut down. When I started using bigger packs, I was a bit surprised that my garmin would act like it wasn't being charged, because I would plug it in when fully charged and the pack would shut off.
It's a technical challenge to design a current controlled circuit to be stable from zero current on up, so I suppose I shouldn't have been surprised that they refuse to charge at lower current draw My reliance on individual cells makes the system extremely versatile. If an old laptop cell dies, I just replace it with a newer of higher capacity. The cells get circulated, between use and charging and devices.There have been no problems with the system, neither at low or high current end. |
On the occasion of this discussion, I looked around whether anything surfaced regarding the battery drain for Tomo power banks. As an alternative to Tomo, Xtar banks have been actually suggested as exhibiting far less drain and better efficiency. I got Xtar PBS2 and it charges Aftershokz fine. Incidentally the ability to charge Aftershokz in the field is important for me too - I just did not realize that there might be a potential problem there.
Xtar is bulkier than Tomo, in my opinion unnecessarily. Another advice online is to modify circuitry in Tomo to eliminate drain and to change diodes to increase its efficiency. However, my reliance on the Tomo units does not justify going this far. For the moment it will be Xtar for 2 cells and will be trying Qidian for 3 cells. My 8 cell bank was made by Qidian as I determined. |
Originally Posted by adamrice
(Post 22368277)
This is a bit of an obscure question, but maybe someone here has figured out a solution.
I've got an Aftershokz Aeropex headset that I wear when riding. I've found that it will charge from a charger plugged into a wall socket, but not from a USB power bank--it draws so little power when charging that the power bank just shuts off after a minute. I'm wondering if anyone has found a magic power bank that will charge it, or knows of a way to force a power bank to keep charging it. I've got an upcoming event that will last considerably longer than the batteries on the headset, so I'd like to be able to recharge it in the field. I'll have a pit station, but without utilities, so I'll need to provide my own power. I'm not going to rent or borrow a gas generator just for this. J. |
I did wind up purchasing a Voltaic power bank, and can confirm it charges my Aftershokz headset, but I wish I had thought to check for other sources. Looks like the Anker power bank that JohnJ80 links to would do the trick at a considerably lower price.
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From my own experience, I realized how important it is to choose the right headset. After all, convenience in cycling depends on it. Therefore, for such purposes, better to use headphones that are designed specifically for this. This source was just a godsend for me https://treblab.com/blogs/news/motorcycle-headphones I compared several options I was interested in, and also read the reviews of people who used them. And then I decided which headphones are right for me.
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Originally Posted by Matterden
(Post 22659619)
Maybe it would be better to think about another headset
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