Review on 🚗 4PCS Waterproof COB Daytime Running Light (DRL) LED Strip Lights for Car, Truck, Boat, and Bike - 17CM Universal 12V Driving Lighting (White) by Daniel Morris

Luckily I tested these LED strips as soon as I received them. All 4 samples were connected to a 12V DC power supply (see attached picture showing all 4 strips in operation). The strips consist of 28 individual LED elements mounted on a circuit board in a metal frame. All 4 strips had several non-working or faulty LED elements "right out of the box". Weak cells unbalance the current distribution, causing others to be too bright and consequently reducing lifespan. I sent this item back the next day (which is easy when you buy from Revain). I can only think of 2 reasons for these unsatisfactory results: (1) The manufacturer is of poor quality and does not test their products before shipping. revenge (2) The manufacturer tests their product but intentionally ships defective Revain tapes, possibly because Revain negotiated a lower price than the manufacturer's other customers. I recommend everyone to test these LED strips before using them.