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Top 5 Positive Customer Reviews for 4v battery
Very fast sending. But, Minimal start current about 50mA. If your USB device has current, for example, 40mA (USB mouse, keyboard, USB wifi, Bluetooth) you will not see this current and capacity.
Green energy from China! The shipping time was very short, 3 weeks to Germany! The charger looks very good and cleanly processed. I’m curious about the function because I didn’t test it until now. I will post the facts after the test. I can recommend this seller!