Sonoro GoLondon Mode D'emploi page 46

c. Use Ni-MH rechargeable batteries
The GoLondon radio is designed with a Ni-MH battery charger. It uses an
extra pin for this charging function. The pin is located in the middle of the
inside of the battery compartment.
NOTE!
For rechargeable batteries it is vital that one battery jack is peeled
off by 1 cm at the negative pole and installed in the bottom battery
layer of the middle slot. You will find a small metal contact that
needs to be connected directly to the batteries metal jack.
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