Initiate a Warranty Replacement for Internal Battery Failure

Because the '188' error caused by internal battery failure indicates a non-serviceable, hazardous hardware defect, you must not attempt to open or repair the unit. Follow these steps to process a warranty claim:

1. Gather your proof of purchase, such as an order confirmation email or digital receipt.
2. Locate the serial number, typically printed on the back of the power bank casing.
3. Contact the INIU customer support team directly at support@iniu.shop.
4. Provide them with the serial number, a description of the '188' error, and mention that you have performed the 3-hour charge test without success.
5. Follow the support team's instructions to return the defective unit and receive a replacement under the standard 24-month warranty.

Safety Warning: Do not attempt to disassemble, puncture, or dispose of the unit in household trash, as damaged lithium-ion batteries pose a significant fire risk.

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