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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.

3.1/5

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?

Common Questions

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TrustScore 4.5 | 7,300+ reviews

Vikram D.

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

2 weeks ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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RM164

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Malaysiastore

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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