The Hobbywing 5V cooling fan is the perfect accessory for keeping your ESC or motor cool during operation. Mount it on cooling fins of the ESC or motor and watch the temperatures drop under extreme conditions. Perfect for planes, boats, cars, and trucks.

Specification:
Input: 4-6cells NiMH or 2S LiPo. 
Size:  24.5mm(L) * 24.5mm(W) * 7mm(H).
Weight: 7.2g 
Suitable for:
        XERUN-120A-SD, XERUN-60A-SD, XERUN-120A-1S-SD
        EZRUN-25A-H, EZRUN-35A, EZRUN-60A
 
How to Use: 
For the above ESC, please choose different cooling fans in different applications: 
- For 4-6 cells NiMH or 2S Lipo: Needn't change the 5V cooling fan on the ESC;
- For 7-9 cells NiMH or 3S Lipo: Please choose a 12V cooling  fan or supply the 5V fan from the receiver (+6V);
- For 10-12 cells NiMH or 4S Lipo: Please choose a 12V cooling fan, and cut the output of the built-in BEC, then supply the receiver with an UBEC (An additional external DC-DC regulator);