Vince Barma wrote: > > * LP8.2: HTML/Attachments detected, removed from message *
Vince, can you set your software to sent plain text so everyone can see your messages? Thanks! I believe your question was about the difference between Costco "Kirkland" (Johnson Control?) 12v batteries and Trojan 12 volt deep cycle (SCS225 or 27TM? families). To a first approximation, you get what you pay for. The Costco battery is cheaper, so you can expect it to perform worse. It would help if you can find out exactly what this battery is: it's specs, intended use, life, capacity, etc. Next point: As a rule, 12v flooded batteries do not work very well in EVs. They are generally not true deep-cycle batteries, and are designed for lower currents and shorter life expectancies. You will only aggravate matters if you use too few of them in an EV and expect high speeds and fast accellerations. For example, I took a look at a Geo Metro with ten Trojan SCS225 batteries. The owner had driven it at freeway speeds, climbed hills at 500 amps, run them dead a few times, etc. and the batteries were dying in less than a year with under 5000 miles. Even if he had driven like a little old lady and babied these batteries, I doubt they would last over 2 years or even reach 10,000 miles. I suspect that the Costco batteries would be a lot like the SCS225. If you stayed with Trojan, the 27TMH may be about the best of their offerings in this size range. I think John Bryan got pretty good life out of a set of them (perhaps he'll respond). If it were me, I'd either use 8v floodeds to keep cost low, or go to a premium 12v AGM battery if cost is less important. The 8v batteries have at least twice the life, and you can probably get 12 of them in a Metro (96v pack). For AGMs, the Optima, Hawker, or Concorde batteries are possible choices. -- Lee A. Hart Ring the bells that still can ring 814 8th Ave. N. Forget your perfect offering Sartell, MN 56377 USA There is a crack in everything leeahart_at_earthlink.net That's how the light gets in - Leonard Cohen
