Aimee Picchi is the associate managing editor for CBS MoneyWatch, where she covers business and personal finance. She previously worked at Bloomberg News and has written for national news outlets ...

In my 10-plus years of testing smartwatches, I've never had to actively try to drain a battery. That changed when I strapped on the $350 OnePlus Watch 3. Five days into my battery test ...

Finally, if a battery overheats, emits an odor, changes shape or color, leaks, makes noises, the FDNY instructs that one should call 911. Lithium-ion battery safety tips are pictured.