Frankly, 200 lumens isn’t that much for this tech and there are a TON of cheap LED flashlights which use such a chip and illuminate at approximately 200 lumens with a single chip. Might be same chip.
If the price is right, I’d try those for backup lights.
Well, that’s interesting all on it’s own. What chip 2mm square is being used in flashlights with actual (as opposed to eBay, etc. ratings) 200 lumen output? I have higher lumen output flashlights but they use bigger chips, and consequently less tight beams. If I knew what chip to look for, that’d narrow the search for a new head flashlight. :-)
As for the backup bulb, the price is pretty reasonable - $10 for a pair. Higher output bulbs are available but are larger & heavier, which is an issue as those bulbs tend to vibrate out of their sockets if the bulb is horizontal when mounted in the vehicle.
In any event, it’d be nice to find real specs on these 2020 series LED’s.