JBL Xtreme 2
15 h, Rechargeable battery operated
JBL Xtreme 2
15 h, Rechargeable battery operated
Frequency range: 55 - 20000 Hz
Music power (RMS): 2 x 20W (AC mode)
JBL Xtreme 2 has a good "sound and bass booster" with stereo, so the JBL 2 meets my needs perfectly.
I don't need a second JBL. The best thing is to contact the manufacturer or maybe there is something in the manual (pdf download).
It is best to buy a power bank with an integrated 230V connection, where you can simply use the original charging adapter. For example, the following product: RAVPower RP-PB054 (20100mAh, iSmart 2.0)