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So this is not a car but it is the same concept. I am working on a solar powered boat for a competition and am looking at batteries. We are limited to 100 lbs of lead acid batteries so i am trying to get the most power for the weight. I was wondering what the difference between a cheap battery and a more expensive battery is? For example the 35 amp hour Mighty Max battery(a cheap Walmart brand), https://www.mightymaxbattery.com/p3421769/ml35-12-12-volt-35-ah-sla-battery.html, weights 23 lbs and is only around $65. The Enersys Genesis G26EP has 28 Ah, http://www.enersys.com/WorkArea/DownloadAsset.aspx?id=492, and is over 2 times more expensive but appears to have less Ah/capacity and weighs about the same. Why is this? I assume the enersys is a better battery but it does not appear so.
Some more information is that I am trying to chose batteries (24 volt configuration) to run a 2 hour endurance race and then a pack for a 300 meter sprint race (36 volt configuration).
Some more information is that I am trying to chose batteries (24 volt configuration) to run a 2 hour endurance race and then a pack for a 300 meter sprint race (36 volt configuration).