does this work by battery power (chargeable) or does it have to be plugged in?
1406415
There is an AC adapter with the unit. That is the only way I can see to power it.
1406416
We only have it plugged in. As far as we cal tell it does not accept batteries.
1406417
It is plugged in. Great Sound especially for the Bluetooth function for my cellphone.
8844
you have to plug it into a usb or get an adapter plug to plug in outlet. They are built in batteries.
1135004
It runs and charges off of usb power. You can use a usb ac adaptor and leave it on, but at some point the battery may get damaged always being plugged in.
1384200
no you have to plug it into a power source. that's the only way it will work.
1041862
Its not battery operated if that's what you are asking. You have to plug it in to use it.
1569732
It must be plugged in. But it does have a battery because there is a CAUTION: Risk of explosion if battery is replaced by an incorrect type.
1777271
It's plug in. But weaker than the two battery operated ones I've owned. And the cord is constantly in the way.
1842070
Only works when plugged in. There is a battery backup to keep the time during a power failure.
617737
No, it actually comes with a power cord. You connect the cord to the bottom of the front of the device and plug it into the wall. I prefer it to battery powered.
59497
It is powered through the USB port. Just plug into the USB port and it is ready to work.
513559
Yes it can be used plugged in. Also it can be used without being plugged in.
1813273
From what I have experienced, there is not "battery" on this product. So it has to be plugged to a power source.
2256709
Does not have to be plugged in all the time. Just after using it and every 30 days. I don't know how much current it uses but you can keep it plugged in and it'll stop charging it once it's fully charged
1460615
It's designed to be plugged in. I think it has a battery but it's only for when the power goes out.
649562
It has to be plugged in to a long electric cord. Tie the cord to your belt loop and walk so the cord is always behind you, it works fine this way and you won't ever have to deal with charging a battery or replacing a battery.
499961
It charges while plugged in. It basically replaces the batteries and you plug the charger into the hole in the device, not the battery pack.
1819489
No, it plugs in. When I first saw it, I assumed it was battery-powered (and weak), or even manual. But it plugs into a standard outlet, and is plenty powerful.