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› Eagletree Data Logger Battery usage VS. Charger
04-08-2010 03:31 AM  8 years agoPost 1
rjhpilot91

rrApprentice

somers point, nj

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I usually compare my battery milliamp usage to what the charger puts back in, except that the charger always puts in an extra 4-500 more mah than the data logger says the flight used?

Which one is correct in assuming the 80% rule, should I go by the eagletree recorder numbers or what the charger actually puts back into the battery?

Helicopters don't fly, they beat the air into submission!

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04-08-2010 05:00 AM  8 years agoPost 2
tadawson

rrElite Veteran

Lewisville, TX

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They are likely both correct - charging is not 100% efficient and neither is discharge!

- Tim

Friends don't let friends become electrotarded . . . .

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04-08-2010 06:10 AM  8 years agoPost 3
AWittleWabbit

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O.C., CA

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The battery is the safe bet. Like Dawson mentioned, charging or discharging is not 100% efficient. You'll never get 100% out of what you put in. The battery is the more conservative number.

Heli-itis sufferer.

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04-08-2010 07:04 AM  8 years agoPost 4
jackheli

rrProfessor

Vancouver - Canada

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Do you use a balancer? That is were the extra milliamps go: while you charge from the discharge lead the balancer applies a load and discharges individual cells that are at a higher voltage on the balancer lead .

It's easy to find an excuse to do wrong. Hard is not to find an excuse to do right.

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04-08-2010 12:00 PM  8 years agoPost 5
rjhpilot91

rrApprentice

somers point, nj

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Very good points. Maybe I will just split the difference between what the data logger says and the charger and call that my usage number.

Helicopters don't fly, they beat the air into submission!

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