QWinOut 2-4S 30A RC Brushless ESC Simonk Firmware Electric Speed Controller with 5V 3A BEC with 3.5mm Female Banana Bullet for 2 to 4s Lipo Battery,

The QWinOut 2-4S 30A RC Brushless ESC with Simonk Firmware Electric Speed Controller seems to have mixed reviews from customers. One customer had a negative experience with the product, stating that they had gone through four of these ESCs and experienced multiple issues such as burnouts and voltage transients, leading to plane crashes. They concluded by strongly advising against purchasing this product. On the other hand, another customer had a positive experience and found the ESC to be perfect for their brushless motor. They soldered the wires directly to the banana clips and found that the ESC worked perfectly with both 2S and 3S batteries, providing them with control over motor speed. They also used it for their battle bot and found it to be of great quality. Another customer mentioned that the ESC worked well for a motor pulling 18A but cautioned against using it with high KV motors as they had experienced failure when using them. Overall, it seems that the QWinOut 2-4S 30A RC Brushless ESC has had mixed reviews, with some customers experiencing issues and others having a positive experience. It may be worth Considering the specific requirements of your motor and setup before purchasing this product.