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Old 09-12-2015, 06:11 AM
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Rocketman_
 
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Originally Posted by douglas racer
Rocketman Does this mean with Li ion cells you can rely on the voltage of the cell to tell you how much is left? I'm with you on not charging batteries at the field.
The answer is yes. I use the Hanger 9 Digital Variable Load Voltmeter. Just plug it into the plane's charging jack at the field, take a quick reading and you're done.
The instructions that I received with a 2-cell Li-Ion battery say stop flying when the voltage under load is 6.9v to 7.0v. At 6.8v under load the battery has no power left.
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