Regularly it takes about 4 hours to charge the Mega speaker to full. You don't need to charge it specially for the first time.

Yes, we recommend to charge it to full when you receive it.

The Mode button indicator will stay in red when the speaker is in charging condition, once fully charged, the light will go off. Regularly it will takes around 3~4 hours to be fully charged.

First turn on Bluetooth on your MacBook or iMac, then power on the speaker, and find the speaker on the list of your device, pair the speaker. If you cannot pair the speaker, you can hold the play/pause button until the LED light flash to reset pairing record, and restart Bluetooth on your MacBook, then try again.

SBC.

You can use a normal cellphone charger(5V/1A) to charge the speaker, it would take 4-5 hours for a full charge, if using a QC charger(5V/2A or above) to charge it, time would be shorter, maybe 3 hours. We do not recommend connecting the speaker to a USB port on a PC for charging, current is too small. The Mode button indicator will stay in red when the speaker is in charging condition, once fully charged, the light will go off. Please do not use the speaker while it's charging, it would be better for battery life.

Yes, it can play music while charging, but we don't recommend using it like that, it will harm the battery life and decrease the lifespan of the speaker.

First, you need to clear the pairing records. You can hold the play/pause button until the LED lights flash, then turn on the Bluetooth of your Windows 10, wait for the PC to search for the speaker Bluetooth signal, once the speaker is on the Bluetooth devices list, pair it.

Yes, that is TWS Mode, and it is only available over Bluetooth and you’ll need two of the speakers to work together. Check below: Step 1: Turn on the two speakers and hold the Mode button on one speaker (not both of them) for 3 seconds till you hear voice reminder,then they will pair with each other automatically. Step 2: Activate the Bluetooth function from your Bluetooth enabled device end, scan “Tronsmart Element Mega” and pair, once successfully connected to your device, you can hear the sound come from the two speakers. Please check the google drive link below, it’s a short clip to demonstrate the procedure: https://drive.google.com/file/d/16XJ-I4Qs8QWJX0B4UqS6FaLHSgS6_cdq/view

40W is the maximum output.

No, there isn't an App for mega, but you can control the music/operation with Mega touch control or your music Apps.

On Bluetooth mode, it can support the formats that can be played on your device. On TF card mode, it supports MP3, WAV, APE, FLAC. Sampling rate is 44.1k, bit rate is 1411kbps.