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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

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

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€ 33.11

Duties & taxes incl.

GERMANYstore

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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