I bought a power bank around 1 year+ ago from Shopee for $30.90, the seller claimed that it is a 50,000mah power bank.
But it was barely able to charge a device more than twice. As it was a cheap power bank I did not bother to go down to the shop to do a 1-for-1 exchange as it was not worth the transportation nor worth the hassle of getting a refund.
I set it aside and left it on the table.
Earlier today, the front lid of the power bank popped out and the cover fell to the floor. I noticed that the battery had expanded, forcing the cover to open, and attached to the cover were multiple layers of weight metal plates to make the power bank stronger. I started to think that maybe they were put in there on purpose. I started to investigate further and I found out that the weight plates were placed inside the bank to make it appear as if it had a higher capacity than it actually did.

I urge all consumers to be cautious when purchasing products from online retailers. Always make sure to check the product’s specifications and reviews before making a purchase. This incident is a reminder of how important it is to be diligent when shopping online.
Product details:

Brand: WK Powerbank (bought from Shopee)
Fake power banks can explode anytime
Fake power banks are typically much cheaper than genuine power banks, which makes them an attractive option for budget-conscious consumers. Unfortunately, these products can be difficult to distinguish from genuine product, as they often look and feel almost indistinguishable. It is important to be aware of the potential risks associated with purchasing fake power banks, as they can cause damage to your device or potentially even cause injury.
When purchasing a power bank, it is important to take the time to identify a reputable supplier. Look for signs of authenticity such as a warranty, product literature, or a trusted brand name. Additionally, it is important to read reviews before making a purchase, as this can help to identify potential issues with a product. If a product seems too good to be true, it is probably best to avoid it.
Fake power banks can be a serious risk, especially for those who are unaware of the potential problems associated with them. It is important to be aware of the potential risks and to always purchase from a reputable supplier. By doing so, you can ensure that your device is safe and secure.