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Old 08-24-2004 | 07:18 PM
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Hepdog
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From: Stonewall, MB, CANADA
Default RE: GWS issues

Agcatsbest I like your fuel tank analogy and think that is bang on for every other battery except Lipos. From what I've been told, most Lipo's are rated at around 8c with new ones handling 10c to even 12c. The meaning of that I am told is that a 10c 1500 mah lipo battery should be good for 15 amps continuous. 1000 mah for 10 amps and so on. Wire 2 10c 1500 mah packs in parallel and they can handle 30 amps! Apparently that was done with older Lipos before the amp draw ratings started to become useable.

That is consistent with the 3 GP Lipo packs that I have. I also tried drawing 12 amps once from a 3s 1200 mah pack that was rated at 9 amps continuous and my CC 25 ESC said no thank you. What CC said in email was that the voltage drop on Lipo's happens very quickly if you over draw them and the ESC was cutting out due low volts. Inadvertant saftey feature of that ESC I guess, but it saved me buring up a pack. After some digging I found that particular pack only rated to 8c or 9 amps continuous so I smartened up and propped down. Works fine now. Same plane etc but 1500 mah pack easily handles much bigger prop and amp draw. Pack is same make/product but 1500 mah and rated at 11 amps. So if that is correct, with Lipo's the bigger the tank - the more power you can get from them.

Ps always check the ratings of YOUR Lipo pack before cranking out the juice. That and I'm still no expert either. Pls correct me it I'm wrong