The speaker has a 2500mAh battery. With this battery you can enjoy up to 10 hours* in Bluetooth mode, at 65% (medium volume).
It takes 2 hours to fully charge your Tube Speaker's battery. We recommend using a 5V/1.0A power supply.
When it is close to running out, the speaker will emit a warning sound. That is when you should charge your SPC Tube.
Even so, if you connect an iOS device, you can see what the speaker's battery percentage is at each moment.
*Note*The battery life varies according to the volume level and the type of music.