Magnet wireless charging battery pack (EB-U2500) issues

If your mobile device does not charge when connected to the Magnet Wireless Charging Battery Pack (EB-U2500), or if charging stops unexpectedly, this guide provides solutions. These steps will help you troubleshoot and resolve the issue effectively.
A Galaxy S26 Ultra in an orange case attached to a gray Samsung magnetic wireless battery pack.
A Galaxy S26 Ultra in an orange case attached to a gray Samsung magnetic wireless battery pack.

Magnet wireless charging battery pack (EB-U2500) issues

1

Charge the battery pack.

For the first use or after extended periods of inactivity, charge the battery pack before using it.

A gray Samsung battery pack lying on a wooden surface being charged by a white USB cable.

2

Troubleshoot charging issues.

If your mobile device does not charge when connected, connect the battery pack to a charger. Then, press and hold the side button (Battery level check/Wireless charging standby/Reset button) for more than 7 seconds.

The battery pack will automatically detect your mobile device and start charging wirelessly.

A finger pressing the side power button on a gray Samsung battery pack with five white LED lights lit up.

3

Address blinking LED issues.

If only one battery status indicator LED is blinking, the connected mobile device may not charge properly. Fully charge the battery pack until at least one more LED is lit, then reconnect your mobile device to resume charging.

A gray Samsung battery pack standing on a wooden surface with four white LED lights illuminated at the bottom.

4

Reconnect the USB cable.

If the connected device is not charging, disconnect the USB cable from the battery pack and reconnect it. Or, press and hold the side button (Battery level check/Wireless charging standby/Reset button) for more than 7 seconds.

Hands holding a gray Samsung battery pack while connecting a white USB cable to the charging port.

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