Active basses with built-in lithium battery (e.g. Warwick Master Builts)

Discussion in 'Basses [BG]' started by Taustin Powers, Sep 19, 2017.


  1. So I got a new Warwick Thumb NT and was surprised to find a mini USB jack on the back plate to charge the electronics. Turns out there is a lithium battery built in there, with the option to reroute to a normal 9V battery if you forget to charge.

    Does anyone have experience with that? How long does a fully charged lithium battery last compared to a throw-away 9V battery? Is it sensitive to temperature changes? Any problems with drained batteries when driving to a gig in freezing winter?

    I have had issues like that with a wireless system with built-in lithium battery, so I am curious whether this can happen here as well.

    Example:

    rbuilt-Basses-to-Be-Equipped-with-a-New-Onboard-Preamp-with-Rechargeable-Lithium-Battery-768x575.