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Selecting a new SLA battery

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jbhart(at)onlyinternet.ne
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Posted: Thu Mar 01, 2012 2:01 pm Post subject: Selecting a new SLA battery

Date: Thu, 1 Mar 2012 10:26:37 -0800 (PST)

From: Phil <phactor9(at)yahoo.com>

 	  Quote: 	

I'm looking for a SLA battery for the CRE mz201 engine. It's 626cc with 

9.1:1 compression and has a 450 watt starter motor. Given the 450w starter 

motor size, what AH battery would be large enough, 5AH, 7AH, 9AH?

 	  Quote: 	

Phil,

Assuming that it takes all 450 watts to spin the engine and that the battery 

voltage drops to 12 volts during this time, you can expect one minute, 36 

seconds per amp hour.  This is a conservative estimate in that once the 

engine starts to rotate the current will fall to match the load.

Jack B. Hart FF004 

Winchester, IN

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