Sonoro GoLondon Mode D'emploi page 45

b. Use alkaline batteries
WARNING!
Never mix different batteries, nor types or brands and never mix
the polarity! Serious damage or explosions may result!
Install 6 pieces of 1,5 Volt AA or LR6 alkaline batteries or 6 pieces of
1,2 Volt HR6 rechargeable Ni-MH batteries, and make sure that the
polarity is as shown in the battery compartment.
AA LR6 HR6
HR6 LR6 AA
AA LR6 HR6
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