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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?

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TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

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HK$241

Duties & taxes incl.

Hong Kongstore

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30 daysfor PRO membership users

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

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