@PhysAssist Based on the USB-USB cable that is supplied with it, I assume the USB output can also be a USB input.
The common USB power bank chips that provide this function do it by providing power 99% of the time, and checking to see if they are plugged into a USB charger during the other 1%. Most battery charge circuits don’t mind those power interruptions, but some other circuits can’t handle it.
In particular, many Bluetooth devices lose their connection each time the power bank tests to see if there is a charger.
For those of you who buy a pair, can you see what happens if you plug them into each other when they are both half charged? My guess is that they will take turns charging and being charged until they are both dead.
@PhysAssist Some USB C with PD devices can accept anything from 3.3V to 20.0V through the USB C port.
This doesn’t have USB-C/PD. They are just saying you can plug the car adapter end into a 12v socket, and it will supply 5 volts on the USB port.
Depending on the internal design it may even charge itself while powering an external USB device. That often requires more parts, so most cheap ones don’t do it. On those, when you plug in a load, it diverts all of the power to the USB port. With no detectable load, the power is used to charge the battery.
My pebble watch charger uses so little current that many battery banks don’t see it.
So I’m not clear on somethings here - is the flashlight powered by the rechargable battery for the so-called power bank? And where is the part that cuts the seat belts, smashes windows and kills dinosaurs?
and 150 Lumens seems kind of low, like a key chain light. But I guess if it’s really dark …
/giphy not clear
This isn’t like some nice high-quality machined alloy or something, right? It looks kind-of like that special grade of Chinese plastic with various snappy hinge-y twisty-y parts that will probably just break apart with normal use?
It seems to be a lot of dollar-store components (USB-charger, USB cable, tiny flashlight) all bundled into one.
Actually kind-of a nice combination to have as an “emergency extra device” to keep in your car, except that it just appears to have that aura of cheapness. (well, there is that site that wants $37 for one, but I’m not convinced.)
Somebody convince me because I probably want to buy this but know I will regret it!
Wouldn’t you be better with a Swiss Army Knife and one of those Maglite mini’s? It just seems to be the worst of both worlds. It’s kind of like the thing you hope you would never have to rely on. 150 lumens needs a hi-lo switch? Really?
@Gypsigirl213 #1 No but it’s a great deal of if’s to make the phone thing happen Not sure this thing has enough portable juice to make a difference anyway… #2 Heck yes. Don’t you watch MacGyver for that matter anyone who made it through scouts could.
I looked at the manual and I might pick these up. You can plug it into the cigarette lighter to keep charged and the output from the USB port is then 2A, apparently it’s only 1A off the battery. This could be considered a car phone charger with extras. The primary drawback is then the seatbelt cutter is no longer attached since it’s part of the cover that goes over the cigarette lighter plug.
Just received mine… great little tool with a quality feel! VERY bright flashlight, (with 2 brightness levels… why?), VERY bright flashing red light for emergencies, and a magnet to stick it to the hood or roof of your car. Then you get a charger, power bank, seatbelt cutter, and a window buster on top of all that… no complaints, except what do I do with the 2nd one… wait for the first one to fail? Stocking stuffer?