Today, let's test and open another powerbank with the help of my cat. This time it's a 10 000 mAh rated powerbank made by "mm" with two USB ports (1A and 2.1A). Is the capacity and current capability is real or fake? What battery and circuitry does it contain? Let's see. Note: the clamp meter measurement may have been influenced by a transformer or inductor in the nearby charger SMPS.
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