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Post by Garf on Mar 22, 2012 20:12:48 GMT -7
I am always looking for an improved starting battery. My last example was a disaster. This one looks interesting. NiZn. Nickle Zinc. After I got them, I found out it has to be charged very differently than the others. I will see if they will survive my techniques. The static voltage is 1.6V to a max of 1.9V at charge.   |
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Post by Garf on Mar 24, 2012 15:11:24 GMT -7
I made one of these things into a starting battery and plan to test it tomorrow. It should work very well.
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Post by bigiron13 on Mar 25, 2012 8:54:57 GMT -7
You may find that the 1.8 volt will burn out some plugs pretty quickly. Also My experience with Nickle/zinc batteries is that their service life is fairly short. About one to two years.
Hope they have improved the life span since I used them ( about 40 years ago).
Bigiron
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Post by Garf on Mar 25, 2012 13:32:36 GMT -7
I would hope that they would have improved them some over 40 years. I made up a battery and used it today at the field using whatever charge that it came with. It worked perfectly. Charging it without damaging it will be the trick.
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Post by Garf on Apr 4, 2012 17:29:18 GMT -7
I have used the battery for 2 Sundays so far with no signs of weakening.
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Post by Garf on Apr 16, 2012 10:28:18 GMT -7
So far, I have used this thing for 3 flying sessions over 5 weeks. Not bad for the factory charge it came with.
UPDATE: Make it 4 flying sessions.
UPDATE: It has been 8 flying sessions since I made up the battery and it has not been recharged.
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Post by Garf on Jun 17, 2012 13:28:34 GMT -7
The battery finally gave up during the 9th flying session. Not bad at all. Now to see how it reacts to charging.
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Post by Garf on Jun 22, 2012 9:34:17 GMT -7
I've given the battery a partial charge. I will have to see how long it lasts.
UPDATE: Did fine today. 7/1/12
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Post by Garf on Jul 30, 2012 11:41:26 GMT -7
2 flying sessions in 4 weeks. Still going strong. some of my older NiCads are failing. I need to get more of these.
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Post by Garf on Aug 12, 2012 13:19:28 GMT -7
The battery went dead early into the 3rd flying session. My charging technique doesn't work. Back to the drawing board.
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Post by Garf on Aug 18, 2012 16:28:49 GMT -7
Since the last charging session didn't do too well, I put this thing on charge overnight. Lets see what is left in the morning.
UPDATE: I took it off of charge after a few hours. Lets see what happens this time.
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Post by Garf on Aug 19, 2012 12:38:16 GMT -7
Did well today, second charge, first use.
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Post by Garf on Sept 2, 2012 7:39:24 GMT -7
The battery died on the second use. Something is wrong.
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Post by Garf on Sept 3, 2012 19:35:00 GMT -7
I was going to charge the battery at 400 ma for 5 hours. I ended up leaving it on for 9 hours. Lets see what happens now.
09/09/12-first session
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Post by Garf on Aug 14, 2014 12:58:53 GMT -7
The battery has done well till this point. I accidentally reverse charged it and apparently damaged it. We'll have to see if it recovers, or if it is shot. I need to check my backup batteries now.
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Post by jehold66203 on Aug 14, 2014 17:02:50 GMT -7
Now I know why I stay with my 12 volt gel cell battery. I do charge it about every three months. The little nicads seem like they need charging after two or three sessions. Depends on if I have and engine that starts quickly or gives me fits.
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Post by Garf on Aug 16, 2014 11:41:39 GMT -7
The last time out, it failed before I was ready to quit flying. If it doesn't recover some, I will have to trash it.
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