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Which Power Adapter/Charger for Portable Radio?

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Boris_yo:
Hello,

I want to buy portable radio that can work on included 1000mAh lithium battery or power adapter/charger which is not included.

Attached are photos of radio's power input specifications and 2 chargers that I have at home. Which charger should I use?

Thanks

Cyberdragon:
Lithium battery systems have internal current regulation. It will always take 500mA as long as the voltage is 5V, just like USB devices do.

Boris_yo:
What if I won't use lithium battery and plug radio in the mains? What will regulate voltage?

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