TechniSat DIGITRADIO 2 Instruction Manual page 88

Normal batteries may not be recharged. Batteries must not be reactivated by
other means, not taken apart, heated or thrown into an open fire (danger of
explosion!).
Clean battery contacts and device contacts before inserting.
If the rechargeable battery is inserted incorrectly, there is a danger of explosion!
Replace only with rechargeable batteries of the correct type and model number
Caution! Do not expose batteries to extreme conditions.
Do not place them on radiators, or expose them to direct sunlight.
Leaking or damaged batteries can cause burns if they come into contact with the
skin. In this case use suitable protective gloves. Clean the battery compartment
with a dry cloth.
Remove the battery if the device will not be used for a long time,.
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