The devices "are safe to use with the OnePlus 2, but are not exactly playing nice with non-OnePlus devices.
OnePlus is offering refunds on its USB-C charging cables and adapter after a Google engineer warned that they could be dangerous.
The devices "are safe to use with the OnePlus 2," OnePlus said, but they're not exactly playing nice with non-OnePlus devices.
"Many of you have bought them to use with your other USB Type-C devices. That may be fine, but depending on the devices and power sources you're using them with we can't guarantee full compatibility with those products," OnePlus co-founder Carl Pei wrote in a forum post.
As a result, OnePlus will offer refunds on USB-C products purchased on its website. The cables included in the box with your OnePlus 2 are not eligible since OnePlus considers them to be safe.
Customers in North America and Europe can apply online; those in India and China can take their cable or adapter to a OnePlus repair center. The offer is good through Dec. 31.
"In the meantime, our team has already begun developing improved Type-C cables and adapters," Pei said. "We'll keep you posted when they're ready for release."
The move comes after Google engineer Benson Leung warned people not to buy the OnePlus USB-C cables. "It is not spec compliant (uses a 3A identifier resistor instead of the "Default USB Power" one), and may cause damage to your charger, hub, or PC USB port" on the Chromebook Pixel, Nexus 6P, or Nexus 5X, he wrote on Google+.
Leung has been reviewing third-party USB Type-C cables on Amazon after he became fed up with early cables from third-party vendors "that so blatantly flaunt the specification."
"I want to hold them to task," he said earlier this month.
According to Pei, the issue with the USB-C devices from OnePlus is that "our cable and adapter use a 10kΩ resistor, but according to version 1.1 of the Type-C port standard, these products should be using a 56kΩ resistor.
"The cable and adapter are designed for a maximum of 2 amps of power, but the resistor will allow fast-charging devices to try to draw more power than a power source may allow," he continued. "This could result in damage to the power source (third-party charger, USB port, etc.) if the device and power source do not have an internal mechanism to self-regulate the amount of power flowing to or from them."
For those who want a OnePlus device, meanwhile, the company is dropping its invite-only process for Black Friday and letting anyone buy one now through Nov. 30. The company is selling its OnePlus 2 and OnePlus X smartphones, as well as other accessories.