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Model Forum / Radio Controlled / Air Models / August 2004newbe question
On the Rx full charge voltage show 4.19 volt and after 90 minute still at 3.89 is this pack OK to fly with? "poorman" <nleb@nbnet.nb.ca> wrote in news:ZYBQc.89412$Np3.4312862@ursa- nb00s0.nbnet.nb.ca: > On the Rx full charge voltage show 4.19 volt and after 90 minute still at > 3.89 is this pack OK > to fly with? If it's a 4-cell nicad pack, then it's acting like it has a dead cell. I'd strongly recommend dumping it.  Signature"Be assured that a walk through the ocean of most souls would scarcely get your feet wet." - Deteriorata No. > On the Rx full charge voltage show 4.19 volt and after 90 minute still at > 3.89 is this pack OK > to fly with? >On the Rx full charge voltage show 4.19 volt and after 90 minute still at >3.89 is this pack OK >to fly with? I wouldn't. It measures like there's a dead cell. "Fully" discharged voltage should be 4.4v. If it's just idling (doing no work), the pack should stay in the green longer than 90 minutes. Full charge voltage should be much more than 4.19v. Dr.1 Driver "There's a Hun in the sun!" > >On the Rx full charge voltage show 4.19 volt and after 90 minute still at > >3.89 is this pack OK [quoted text clipped - 6 lines] > Dr.1 Driver > "There's a Hun in the sun!" That's a bad battery. After a full charge, using Hobbico voltmeter, it should be at least 5.40 under load. I agree, it sounds like a dead cell. Heraus mit ihm! Nope, that voltage suggests that there's a dead cell in that 4-cell pack. Take your pick; pay $20 for a new pack and the time it takes to buy it, or $200 for a new airplane and the many hours it takes to build a new one. MJC > On the Rx full charge voltage show 4.19 volt and after 90 minute still at > 3.89 is this pack OK > to fly with? |
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