Ebay mains COB LED grow light test

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Testing two mains COB LED's from EBAY for grow light spectrum and PAR output efficiency. One is a 'blurple' and the other a warm white COB LED.

Excellent teardown video by bigclivedotcom 'Driverless 50W LED teardown and schematic' here: https://youtu.be/KKd2L9Exw0M

Results as follows:
Warm white:
48.8 Watts
31.7 PAR
0.65 PPFD/Watt efficiency
Spectrum: Warm white, 3100K
Link: https://www.ebay.com/itm/New-Smart-IC-Driver-LED-light-Bulb-COB-Chip-110V-220V-Input-Integrated20-30-50W-/272419003968

'Blurple' COB
47.5 Watts
14 PAR
0.29PPFD/Watt efficiency
Link: https://www.ebay.com/itm/Full-Spectrum-LED-Red-Blue-20W-30W-50W-Smart-IC-Spotlight-Driverless-110-220VAC/264064761812?hash=item3d7b7c7fd4:m:mj3J0yiUk56XkajqDLMGf7A:rk:6:pf:0

Видео Ebay mains COB LED grow light test канала MIGRO