The 50,000 hours are for standard grade LEDs.
Please search in this forum, we have talked about this type of LED panels and real life experiences multiple times. These types are not the same type as power LEDs found in aquarium LED fixtures-the material, the power design and the MOST IMPORTANT the sourcing of the LEDs. If it happens that the manufacturer decided to buy toy grade LED(the case and physical design suggested so), you can expect them to die within 3 months. 3 years ago, I have traded in some of these similar looking panels with a member to illustrate this point, one of the panel started to burn within 3 weeks.
If you are going to the swap, I can bring those to show you.
Note: I do not object the OP to test but just to warn him he should make sure he is not liable. May be the company that make this one is much better than before. We never know until we test. So without a liability, then go ahead.
Note:Toy grade LED are leds that the fabricator found not performing to the standard of their regular diodes. Instead of wasting them, they were selected to sell to the toy makers for which the toys may not last a week before the kids trashed the whole toy. A real life example: have you ever wondered why the LEDs on a, say, Panasonic VCR or TV never dies after even 10 years while a Toy's R Us kid bike LED blinker die in the first couple months? Better yet, try the $3 LED light flashers that people use in the parties. Some of them die right out of the box even if you change the batteries.
