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Odyssey Battery-Jerry Springer
Okay Jerry, I took your advice and spent $135 bucks today for an Odyssey 16 Amp-hr dry cell that weighs 15 pounds (the 680). I cut the aluminum for a bracket on the gyroscope to mount it but I gotta get Kevin to TIG weld it later today. As far as the battery goes, I hope that MOFO spools me up more than once and still starts the Rotax 582 to boot. I don't know how much current I'm pulling on the startup of the main rotor system but I'm using jumper cable wire and it heats up. I think I'll hand start the blades a bit first instead of just doing the dead start because the dead start looks like a dead short for the first few seconds of the sequence. When I was buying this battery at the store the guys there told me it was designed for Harley's of all things. They also told me that a battery that cost's half as much is the Deka Battery. But, the Deka does have a vent and it's a high pressure vent, where the Odyssey has none and no acid can leak out. I've not been to the Deka site to see the specs but I do have a spec sheet. Nowhere does it say that you can deep discharge this baby like the Odyssey and recharge it completely--400 times. Jesus...400 deep cycle recharges on the odyssey and they warrantee it. That's kicking some tall ass to do that. Another goofy thing about the Odyssey is that you can't recharge it using a trickle charger. Less than 1.25 Amps won't put all the energy back into the battery. You have to use a 10 Amp charger to get back to full energy. Anybody know the chemistry behind that? I don't get it. Lead peroxide is lead peroxide. When you drive the sulfate off the lead atom and reattach an oxygen, what the hell difference does it make how fast you do it (high Amps)? The only thing I can think of is that the battery itself has an internal resistance of 7 Ohms so the higher the current, the higher the temperature of the battery itself. And, as you all know, for every 10 degrees Centigrade, the chemical reactivity rate coefficient doubles. So, the rate constant will be higher for the charge cycle on a hot battery. They say you can completely recharge this baby in 2 hours if you use 10 Amps. I'm thinking that it heats up...that's why! Badwater "I got me a new stinking battery" Bill |
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