ZDZ80 RV really sucks down a battery quick!  
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> ZDZ & RCS Support >> ZDZ80 RV really sucks down a battery quick!
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ZDZ80 RV really sucks down a battery quick! - 7/5/2007 3:11:54 PM   
mtwister


 

Posts: 703
Joined: 11/3/2005
From: Salem , OR, USA
Status: offline 		I have an older all gray ZDZ-80 rv with the older blue box Falkon ignition, and I had a 1500 mah nicad battery in it originally and after the first flight i'd have to recharge it. I replaced it this weekend with a brand new 2500 nicad pak, and after the 2nd flight, my battery checker was giving me the recharge warning. I thought at one point ok, maybe the battery checker is just sensitive, so I flew it again without recharge. About 8 minutes into the flight, it died on me and I crashed in the weeds. The battery was at 3.2 volts. Any ideas?
       Post #: 1

RE: ZDZ80 RV really sucks down a battery quick! - 7/5/2007 3:31:02 PM   
Mike Dooley/RCS


 

Posts: 514
Joined: 7/24/2002
From: MD
Status: offline 		Most likely you are simply not getting a proper charge into your battery pack. The Ignition will draw approx 600ma at full throttle...We have had a lot of battery issues , but once sorted out, all is well....
Keep me posted.

_____________________________

Mike Dooley
RC Showcase

(in reply to mtwister)
       Post #: 2

RE: ZDZ80 RV really sucks down a battery quick! - 7/7/2007 12:38:06 AM   
JoeAirPort



Posts: 7288
Joined: 8/11/2003
From: Milwaukee, WI, USA
Status: offline 		Slow charge that new battery at .250 amps or 250 ma for at least 15-16 hours. This should be done on all new packs. Discharge it and do it again for some added insurance that it is properly form charged (form = slow).

_____________________________

Joe AP

(in reply to Mike Dooley/RCS)
       Post #: 3

RE: ZDZ80 RV really sucks down a battery quick! - 7/14/2007 5:21:45 AM   
mtwister


 

Posts: 703
Joined: 11/3/2005
From: Salem , OR, USA
Status: offline 		It appears you guys are correct. I have always used just my field charger for my batteries, and it seems that by not doing a long slow charge and occasional discharge, it has weakend my batteries. I bought a nice charger, and went through all my packs, and it now seems I have to replace all but one. I used a brand new 4.8v 1500 mah pack last weekend that I slow charged and discharged twice, just as Joeairport recommended, and after two flights, the batteyr was still ok, but getting low. Normally, after one flight I'd have a low voltage warning. Thanks guys.

(in reply to JoeAirPort)
       Post #: 4

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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> ZDZ & RCS Support >> ZDZ80 RV really sucks down a battery quick!
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