Recognise this type of connection?

[Driver101]

The charger is from a JBL Flip bluetooth speaker first edition.

I use it for my work and can't always get mains power after the battery has gone flat.

I see the input is 12v @1.5 amps.

Is there a connection with that end that leads to a USB connection? Secondly would a battery pack with a 5v and either 1.2amp or 2 amp output be enough to power it?

[Driver101]

Wouldn't 5v just be enough to keep it powered or extend the battery life of the speaker for a reasonable period?

When putting in 12v the speaker charges very quickly even when on.