It sounds perfectly fine to use for a Pi. The Pi 3's requirements are listed in the FAQ:
The device is powered by 5V micro-USB.
Recommended PSU current capacity: 2.5 A
Maximum total USB peripheral current draw: 1.2 A
Typical bare-board active current consumption: 400 mA
Using a 2.5 A supply is recommended by the Pi Foundation, and it appears that one reviewer tried it with a Pi:
I also use one of these for my Raspberry Pi 3, because it can run 2.85A@5V, which is notably higher than other chargers, which seem to max out at 2.3-2.4A.
It sounds successful enough. It doesn't matter too much that the current rating is beyond the recommended, as current is only drawn through as required. Having a slightly higher rating (only 12% above the 2.5 A recommendation anyway) won't matter a lot.
Note that the turbo modes would not be appropriate, unless you like fried Pi!
No, seriously, using a 12 V supply will destroy your Pi. While it probably won't actually ignite (that was a 12 V lead-acid battery which probably supplied a lot more current), it certainly will be a paperweight after overloading it.
Fortunately, a brief read of the technical documents (that's for Quick Charge, which is largely the same as turbopower; see the marketing material for a reference) suggests that a device specifically has to negotiate for higher voltage; by default, it'll send just the normal 5 V of the USB standards.