Jabadoo Jsound JS1 Owner's Manual - page 5
Manual is about: Solar Wireless Speaker
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12
5
Charging the built in battery Process
The time it takes to charge the batteries is significantly
relevant to the operation (battery duration) of the speaker.
This speaker can be operated whilst in charge condition.
The rechargeable batteries, contained in the speaker will
automatically be disconnected when fully charged.
The battery pack installed is supplied charged, however, for
maximum performance this should be charged for 12 hours
prior to first use!
When the Charging process is interrupted or surged, which
means external power is disconnected, the battery sign on
the display starts to show the energy stored within the battery.
(You can check when you need to charge the battery by
pushing the battery icon button on the speaker).