Hey! So, about how long the Neewer 20-inch LED Ring Light will last before it gives up on you — let's break it down.
First, the light can be powered by plugging it into an outlet using a DC adapter or by using the Sony NP-F550/F970 replacement Li-ion batteries that come with it.
The manufacturer describes this setup as portable for things like outdoor shoots. However, keep in mind that using the batteries can cause the light to be a bit dimmer, by about 10 watts, compared to when it's plugged in. If you're running on battery, expect a full charge to last around 48 minutes, which might be a bit short for longer sessions without nearby outlets.
From what we've gathered, some folks have noted that when using the batteries, the brightness isn't quite as intense as when it's plugged in, which can be a downside if you need consistent lighting for photos or videos.
Also, it's worth mentioning that, according to our research, once the batteries run out, the light might not continue working even if you plug it in, because the adapter doesn't charge the batteries.
Overall, while having both power options is nice for portability, the DC adapter is probably the way to go if steady and reliable lighting is a bigger priority for you. It seems to help avoid any dips in brightness, which is especially useful in professional settings.
Now, for how long the light itself might last before it fails: like many LED products, it should be good for several years if taken care of, particularly if you're mostly using it with the AC power source.
Just stick to the recommended usage tips, and you should be golden!