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Quadrocopter - X525 XQuad - Battery issue

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Published on Mar 30, 2012

I am posting this video in hopes that some of you other guys out there with quads and RC experience can help me understand the problem I am having.

A few possible causes I can think of:
- The battery is 'bad'/defective
- The battery does not give enough current (the 'C' rating times 'mah', to get Amps per Cycle)
- Motors are drawing more current than they should
- anything else....

Please leave a comment with your thoughts!

Facts:
- At the start of the video, the battery was fully charged to ~12.4 volts. LiPo monitor shows 12.3 volts at the start.
- Drops to 11.8 volts when motors are stated at minimum throttle
- at 10.4 volts the lipo alarm goes off. Alarm was set for 3.3 volts for one cell. I have since changed it to 3.1 volts to give me a bit more time during testing. Will change back later when I actually fly it to give time to land without battery damage.
- Returns to 11.9 volts with the motors off/throttle all the way down
- After a total of 33 seconds of the motors running (not even flying!) until the lipo alarm went off due to cell number 3 dropping below 3.3 volts. It returned to 3.92 once the motors were stopped.
- When cell 3 went below 3.3v, cells 1 and 2 were at 3.43v and 3.73v.
- battery specs are: 11.1v 2280mah 30C (35C max), made by "GE Power", purchased from GoodLuckBuy

2012-03-30

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