Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Will the transmitter work while charging it?
Document: Using this unit to hear television at night. I had a Sony TMR-BT10, but there was a noticable delay which was unacceptable for watching TV. This unit replaced the older transmitter but didn't work with my older headphones which were not A2DP - apparently this unit requires A2DP.
It only seems solid in transmitting and receiving at a range of 15 feet. At 28 feet, even so much as a human body between this device and the bluetooth transmitter can cause a long break in the signal. There is something of a tonal shift upwards after it loses its connection and then re-establishes it. The idea of having a little stand for it to sit in is cute, but it doesn't really work in practice.
New Sony Hwsbta2w Stereo Bluetooth Transmitter Receiver Supplied Stand Cradle...I did not like this product  I have hearing aids and when I set up this product, I noticed very little difference. I thought I would be able to hear the TV through my hearing aids but it didn't really work very well. I was very disappointed.
I was looking for a transmitter to use with my TV, and a pair of stereo bluetooth headphones that I already had. I tried several other transmitters, but they were too complicated and too hard to put into paring mode. This one just works! You simply hold the button down for 7 seconds, and do the same with the headphones, and it works every time. This is important when you're trying to get it to work while watching TV in the dark.
We really wanted to find a blue-tooth audio transmitter. We really wanted this to work. We ended up trying two of these. The first one didn't consistently or successfully enter into pairing mode for transmitting. Didn't perform the way the manual described. We returned it and obtained a replacement unit. That unit did successfully work for pairing transmitter-wise, but the audio had too much delay for our needs since we were attempting to watch TV.
It's a decent bluetooth receiver and transmitter. I personally use it for my laptop to wirelessly connect it to my soundsystem. The reason for this is I always have to unplug my audio cable from the laptop everyday to bring my computer to school or work. My last computer eventually had problems with the sound jack (but this was due to 3+ years of plugging/unplugging the cable from the sound jack.This product does away with the audio jack and reduces visible wires.There are 2 complaints with this item.
Bought this along with the Sony Bluetooth Wireless Transmitter for iPod. Connected the receiver to mini-jack input in my Bose Sound Dock (any amplified system with an aux input should work), and transmitter to my iPod Classic 160GB. Sounds good (hard to tell if there is any difference bet. direct docking the ipod and using the bluetooth system). Setup is easy as pie. When iPod battery eventually runs down, simply dock it on the Bose to recharge - and listen while recharging.
I purchased this Bluetooth adapter based on an email support request I sent to Sony asking whether the transmitter would work on more than one bluetooth devices at the same time. I wanted to "pair" the transmitter with two sets of headphones to listen to television and DVDs played through our home theater equipment. The technical support person from Sony emailed me back the next day and said the model I choose was compatible with more than one bluetooth devices at the same time.
For party? Yes, this would work.
May work perfectly fine transmitting regular music but just expect it to be out of sync while watching video.
Answer: There is no battery in it. It must work with 5V1A dc adaptor pluging into wall outlet.