A tip first; These blocks are fantastic when paired with a cell phone power adapter. I have several Anker PowerCore+ Mini 3350s that can run blocks for weeks depending on how often they are used. This is much more convenient than changing the batteries in the base because you need a screwdriver to remove it and of course just throw the batteries in the trash every time. Anyway, my four year old loves it. The lighting works surprisingly well, even with only one plug on the corner piece. I built an inverted pyramid from the base and all 102 elements glowed well. I still had a few pieces from their Creative 30 set and a few more pieces made the whole thing lame; probably draws more current than a single base can supply. The brightness is amazing; Also works great in a daylight room.
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