My Viomi A11 Cordless Vacuum Stopped Working And Was Repaired With A Used Battery

I purchased a brand-new Viomi A11 cordless vacuum directly from the company. After the very first use, I fully charged the device to 100%, but only about five seconds after disconnecting it from the charger, the vacuum stopped working completely. Because of this, I sent the product in for service under warranty, expecting a proper replacement since it failed on day one.

To my disappointment, instead of providing a replacement device, I was informed that only the battery was changed. When the vacuum was returned, I discovered that the new battery was clearly used, with visible scratches and stains. This is completely unacceptable—it is not only unethical but also violates the principle of selling a device as “new.”

I refuse to accept a so-called repair made with secondhand parts. As a consumer, I have the right to a brand-new, defect-free product, not one patched with used components. For this reason, I have not taken delivery of the device.

If this issue is not resolved immediately, I will file an official complaint with the Consumer Arbitration Committee and pursue all necessary legal action to protect my rights.

I demand that Viomi replace my defective vacuum with a new, fully functional device at once. Anything less is unacceptable, and I expect this matter to be handled promptly and responsibly.