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Ximimark 2Pcs Micro USB 18650 Battery Shield Expansion Board Wemos ESP32 V3 Cable Development Tool LED for Arduino and Raspberry Pi（with Cable）

Q: A charged battery inserted does not activate, nor button, until first power to micro usb. tell me what j4 does! will it provide functionality?

Not sure what j4 is. I use the to power projects that need both 3.3V and 5V power sources, I don't often use the on/off switch.

Product ID: 306081798

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Ximimark 2Pcs Micro USB 18650 Battery Shield Expansion Board Wemos ESP32 V3 Cable Development Tool LED for Arduino and Raspberry Pi（with Cable）

Have a Question? See What Others Asked

A charged battery inserted does not activate, nor button, until first power to micro usb. tell me what j4 does! will it provide functionality?

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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Smooth transaction and product arrived in perfect condition.

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278 DH

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