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Old Aug 19, 2011, 12:48 PM
Registered User
United States, MA, Newburyport
Joined Aug 2011
22 Posts
Question
Cox Sky Cruiser Battery Error

Just got this plane and flew it a couple times. Flew until battery was depleted each time. Now when I go to charge the battery (LiPo 2S 7.4V 250mAh) I get a battery error. I have used it no more than 3 times. Charger LEDS both blink and beeps.

Any clues?

Thanks.

Doug
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Old Aug 19, 2011, 01:05 PM
An itch?. Scratch build.
eflightray's Avatar
South Wales U.K.
Joined Mar 2003
13,257 Posts
Flying until a Lipo is 'depleted', is a good way to ruin them.

By 'depleted', I take it you mean that the speed controller cut the motor, but you still had radio control. It's called flying until the LVC, (Low Voltage Cutout), triggers.

Not a good way to fly, much better to do timed flights and land before it gets that low, (if you want Lipos to last).

Once a Lipo has been below a set voltage, it's chemistry is damaged and basically cannot be recovered, or if it does take a charge, it's unlikely to last much longer.

Sorry.
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Old Aug 19, 2011, 02:38 PM
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United States, MA, Newburyport
Joined Aug 2011
22 Posts
Quote:
Originally Posted by eflightray View Post
Flying until a Lipo is 'depleted', is a good way to ruin them.

By 'depleted', I take it you mean that the speed controller cut the motor, but you still had radio control. It's called flying until the LVC, (Low Voltage Cutout), triggers.

Not a good way to fly, much better to do timed flights and land before it gets that low, (if you want Lipos to last).

Once a Lipo has been below a set voltage, it's chemistry is damaged and basically cannot be recovered, or if it does take a charge, it's unlikely to last much longer.

Sorry.
No problem. Lesson learned. I can just order another for $16 or so. Thank you!

I am old skool. My most recent RC history was dominated by AM radio and Nicads. Learning the new stuff quite rapidly.

Doug
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Old Aug 19, 2011, 07:43 PM
Wake up, feel pulse, be happy!
C₄H₁₀'s Avatar
United States, AK, Fairbanks
Joined Aug 2009
12,411 Posts
Don't pay sixteen bucks for a single lipo that small This pack is a little bigger and heavier. It'll increase flight times at the expense of some floatiness, but it's only like three bucks. You could get a bunch and still come out under $16, even with shipping... Of course, overseas lipo shipping is notoriously slow, so you might have to be patient.
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