rbort
Elite Veteran
Location: Franklin, MA - U.S.A.
My Posts This: Topic Forum | Not quiteThe jewel does in fact charge your battery if the voltage is low, but at it nears 5.4v the charge rate drops off and the eventually becomes ineffective. A fully charged battery might actually drain some, but will find a happy medium of balance where it stops draining and holds steady due to the jewel charge current. I expect that to be about 70% capacity of the battery.
The other day at the Delaware funfly I forgot to turn off my receiver after the first flight of the day. When I got back to it a couple of hours later the battery voltage was showing at 4.8 volts. I did a 4 minute flight (rest of the fuel tank) as I was packing up and going home Sunday end of weekend so to speak, and after 4 minutes the battery was showing 4.94v. It does charge if its low, and the happy medium is about 5.1v from my findings.
But in any case, while you fly you run on the jewel, so charge or not if the motor is running you got power forever. Idle is not a good test as the engine speed is low and erratic, the servos are drawing from vibration, and the jewel has barely enough rpms to keep up with the load, which, the battery is sharing at that speed. Throttle up and the battery goes offline and everything at that point is on the Jewel. Your voltmeter will show a rise in voltage as soon as you throttle up.
-=>Raja.
1005 Gasser, G26 3DMax++, 2205+ flights
Spectra-g, G26 3DMax, 870+ flights |
