A few years ago (pre-retirement) I had the good fortune of attending a symposium during which one of the country's (U.S.) leading experts on lithium batteries (from a chemistry/physics/design perspective) gave a talk. While much of it was beyond my knowledge, she gave a very clear warning to avoid lithium batteries not designed for specific chargers and products. Her examples came mostly from e-cigarettes and cell phones. The thermal events from mis-matches looked pretty bad.

Since then I've only bought batteries under the original manufacturer's label - I think (for cameras and radios, mostly ... from Amazon.com I never know if I'm ordering a genuine battery). The price can be much higher, but I really don't want to burn down my house.