I need PCB for power bank with following specification:Output: 5V 2.1ABattery: 1 series lithium battery - 3.7 to 4.2VCharging current more than 2A4 or 5A charging current is betterI need 4-5 types, 100 each per month1 port output, 2 port output, 3 port output, 4 port output and 2 port output with display
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