Reddit reviews Onite Female 5.5x2.1mm to Male 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm Jack, USB to DC 5.5x2.1mm Cord (DC4+1)
We found 3 Reddit comments about Onite Female 5.5x2.1mm to Male 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm Jack, USB to DC 5.5x2.1mm Cord (DC4+1). Here are the top ones, ranked by their Reddit score.
PLEASE NOTE: The size are listed in the products description below clearly, we suggest you to measure your DC interface size of your laptop or device, and make sure what size you want. These Plugs don’t fit ipod shuffle.These DC connectors are used for electronical devices, tablet, IP Camera, Massagers, Adult electric toy, Mini bluetooth headset, parts replacement, external power source or on-board transformer. We are not responsible for wrong purchase by yourself, but we provide free return and purchase guide.Handy connector works good for multiple applications: power your mobile devices from an external battery pack, making a battery box as a prepare thing, repair the different size of DC interface devices, replacement for laptop / notebook / tablet / mobile phone’s power adapter parts.Pros: Tips for conceivably most of DC powered device you can imagine; Works well with USB car chargers that can deliver enough amps.Compatible with most Bluetooth speakers, wireless charger pad, photo players, camera, GPS, android tablet, Bluetooth ear bud, external battery pack; Works with DC 5v 0.5A, 5v 1a, 5v 1.5a, 5v 2a and more 5v electronics. Note: Please check the DC plug size could meet your demand before purchase.
All you need is a USB to barrel jack kit from Amazon and use a spare USB power supply that most have laying around the house (old cell phone charger).
I used:
Onite DC Plugs for small electronics and devices universal 5.5X2.1mm Jack to 4 Plugs 4.0X1.7mm, 3.5X1.35mm, 3.0X1.0mm, 2.5X0.7mm with 1x Cable 5.5X2.1mm to USB (4 tips +1 cable) https://www.amazon.com/dp/B01C5KQD5I/ref=cm_sw_r_cp_apa_0kMYAbN9CCVVY
Plugged into a USB power hub in my networking closet. The base plug without any adapters works on my 2.0 hub.
Something like this and any standard USB-driven battery pack thing:
https://www.amazon.com/Super-Power-Supply-Android-eReader/dp/B00ROA3GB4
This type of plug is called "barrel jack" to just find a usb -> barrel jack cord that fits
Edit: Related amazon link
I've been out all day today without plugging in. My Chromebook is an Acer CB3 -111, which runs Ubuntu via Crouton and has a 3.22 amp hour battery. Its internal barely lasts a single 8 hour work day.
With my new [$45 18 amp hour battery pack] (https://www.amazon.com/gp/product/B00U0MH5V0/ref=as_li_ss_tl?ie=UTF8&linkCode=ll1&tag=battleforthew-20), my math says I should be able to run the Acer for 56 hours straight.
Usually, by this time of day (about 3pm Pacific), I'm starting to worry about my battery - not today. It still shows 100%.
One caveat - the power pack didn't come with a 3.00mm x 1.00mm DC plug that fits my computer, so I had to buy it separately as part of [this pack] (https://www.amazon.com/gp/product/B01C5KQD5I/ref=as_li_ss_tl?ie=UTF8&linkCode=ll1&tag=battleforthew-20).
I could use the highly efficient (~25%), compact and foldable [12W solar panel] (https://www.amazon.com/gp/product/B01ALRP46Q/ref=as_li_ss_tl?ie=UTF8&linkCode=ll1&tag=battleforthew-20) to trickle charge the power pack (with the USB to 12V cable that came with the 3.0mm x 1.0mm DC adapter - plus a [female cigarette lighter adapter] (https://www.amazon.com/gp/product/B00ISYGMWA/ref=as_li_ss_tl?ie=UTF8&linkCode=ll1&tag=battleforthew-20) and the male cigarette lighter adapter that came with the power pack), but I don't really need to since it already runs for days.
Instead, I'm using the solar panel and its dual USB outputs to keep my iPhone and Galaxy S6 Edge topped off with a couple of [iPhone/Android switchable cables] (https://www.amazon.com/gp/product/B0140SISYM/ref=as_li_ss_tl?ie=UTF8&linkCode=ll1&tag=battleforthew-20).
I've been using both phones all day and they're still at 100%.
I have experimented with a lot of mobile power setups - to include huge, inefficient flexible solar panels and carrying a lead acid power pack around - and this is the first one that actually works.
Hope this is helpful!