Where is the battery connected and where did you measure the voltage ? Also, what kind of battery ? (7.5V is an odd number (5) so it doesn't suggest 1.5V batteries. Is it a 2S lipo ?
Where is the battery connected and where did you measure the voltage ? Also, what kind of battery ? (7.5V is an odd number (5) so it doesn't suggest 1.5V batteries. Is it a 2S lipo ?