cruz-in
Southern Maryland
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Hi All,
Just at Walmart and loooked thru thier battery catalog and reading the narrative was enlightening. A couple of interesting facts on thier "DC" ("Deep Cycle") batteries:
Normal ones (Everstart with 1 year warranty)are rated for 65 cycles
Higher end ones (MAXX with 2 year warranty) are rated for 85 cycles
In the narrative, the only "DC" battery that DID NOT list "starting" as one of it's uses was the 27DC-6
Just thought I would pass it on....
Edited to put Deep Cycle in quotes...
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smkettner
Southern California
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That must be cycling 100% down to 10.5 volts.
Here is a US Battery chart to compare:
http://www.usbattery.com/usb_images/cycle_life.xls.pdf
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cruz-in
Southern Maryland
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smkettner wrote:That must be cycling 100% down to 10.5 volts.
That was my impression....
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cruz-in
Southern Maryland
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Wow big difference...maybe I misintrepretted what I read....
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fla-gypsy
North Florida
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cruz-in wrote:
Wow big difference...maybe I misintrepretted what I read....
Yeah I am a little confused as well. It appears that the WM versions are less than 100 cycles and the US Battery version measures in the 1000's? Is that correct?
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smkettner
Southern California
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USB shows 500 at 100% DOD.
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skipnchar
Topeka or somewhere else
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I'd say there is information not relayed about the issue. Why would anyone 1. ever discharge a battery to 100% intentionally? 2. Buy a battery where cycles would be less than 100 (in case it does NOT mean cycled to 100% discharged).
All that being said, that IS about the experience I've personally had with Everstart "deep cycle" batteries. Discharging never more than 50% and I only get about a years use from them.
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cruz-in
Southern Maryland
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The battery book I read these numbers in was hanging next to the Batteries in Walmart. I encourage someone else to take a read of it to make sure I was not misintrepretting it...
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garym114
Bluff Dale, Texas
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'Deep Cycle' is a marketing term just like 'New' and 'Improved'.
WalMart does not sell any true deep cycle batteries.
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boondockdad
Dearborn
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I may be misinterpreting this, too...
but, to put this US Battery chart another way:
if I run my battery down to 50% DOD every night, then charge it back to 100% SOC every day, I'll get 1150 of these cycles out of it.
That's over 3 years of, what I consider, extreme heavy duty.
No way.
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