Outback MX problem [RE-wrenches]

[Matt Tritt]

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Actually, this all has to do with the charge rate AND the specific 
gravity of the cells. Jamie's plates might have a slightly different 
lead alloy than IBE or Hawker, for instance, and they might also have a 
different thickness. Generally, the thinner the plate, the higher the 
specific gravity (and cell voltage) needs to be. My experience has been 
that the thicker the lead, the longer the ultimate life of the battery.

Matt at DC Power Systems

Allan Sindelar wrote:

>Matt,
>Like Larry, I too challenge your question about "why you have the bulk point
>set so high". You may not have read a recent Surrette Tech Bulletin #614
>(not the much older #605), titled "Charging and Discharging Batteries;
>Renewable Energy Applications". It calls for higher charge voltages: 29.4 is
>a midpoint in Surrette's recommendations, and 30.0 the upper point. This
>will vary according primarily to charging C/ rate.
>Allan at Positive Energy 
>
>-----Original Message-----
>From: Matt Tritt [mailto:solarone at charter.net] 
>
>Ron,
>
>Since the MX thinks that the batteries are virtually full all the time, 
>"force bulk" is simply overriding the controller programming to effect a 
>charge, I would take OutBack up on the offer and call it good. I'm 
>curious as to why you have the bulk point set so high?
>
>Matt T
>
>
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