"There are a lot of weird scam tools out there. Soaring power bills have made the " power saver" scam devices popular, but the other day I came across another odd one called a "USB Phone Battery Repair Multipurpose Battery Restorer Efficient Repair" dongle. Also: Want to cut your electric bill? Skip these scam 'power-saving' devices, and buy this instead It claims to do a lot, but rest assured, all it does is take your money."
"Before I plugged it into any device, I took precautions in case the dongle wanted to do something nefarious. After all, the duck on the box made me wonder if this was some sort of Rubber Ducky hack dongle. For the $5 I'd paid for it, that would have been cool. Also: You can buy refurbished tech from Back Market in person now - here's where But alas, apart from being a useless scam, it's quite innocent."
"I tore mine apart, and inside is very little. Inside the plastic box is a circuit board, and on that are two blue LEDs and a tiny resistor to stop the LEDs from blowing up. Also: This overlooked phone accessory gave me a greater sense of security - and it's not a case Also: 10 pocket-sized tools that make life easier - and how I use each That's it. The purpose of the LEDs is to illuminate a fake "display" with Chinese writing that says "under repair.""
A cheap USB "battery repair" dongle markets itself as a multipurpose battery restorer but performs no electrical repair. The device contains only a small circuit board with two blue LEDs and a resistor. The LEDs light a fake display that reads "under repair" in Chinese. The marketing instructs multi-hour sessions over weeks to purportedly fix batteries, a schedule that can prevent returns. The gadget wastes money but poses little direct physical harm. Users should take precautions before connecting unknown accessories, rely on reputable repair services, and practice proper battery maintenance to extend phone life.
Read at ZDNET
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