Review on Wagan EL9903 5A Power Adapter - Efficiently 🔌 Converts 110V AC to 12V DC, UL Listed, Black by Homer Reed

Works as expected. The packaging was very minimal. The item came in a box with no plastic wrap, printed material, or other packaging material. After plugging the device into the wall, it took a full 10 seconds for the power light to come on. The reason for the delay is that the internal capacitors need time to charge up. Some complain about DOA (Dead on Arrival), but if they haven't waited long enough for the device to fully boot up, it could be mistaken for a failed device. I used this power supply for my thermoelectric cooler and it lasted 18 hours. During operation, the device got very hot, but not by much. The operating temperature is comparable to that of a laptop power supply. In general, the purchase is satisfied.