FYI: I have been posting updates for those of us who have already read the OP below. For anyone new to the thread, it might be best to skip down below all of these updates, read the body of the post...
Check this LINK for a lower price for the 18 5050 COB LEDs. He also has the 24 5050 COB, and 20 of the 18 5050 COB for $75.
If your motivation for switching to LEDs is to reduce the current drain, thereby increasing time between charging, consider the current drain of the 18 vs 24 5050 COBs, or 36 vs 48 1210 panels. On the other hand if you want brighter lights, the more LEDs of the same type, the brighter, and they will still draw less current than the 1141s.
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