Re: [RE-wrenches] Sandia study

al Message - From: "Allan Sindelar" To: "'RE-wrenches'" Sent: Friday, December 04, 2009 9:42 PM Subject: Re: [RE-wrenches] Sandia study - WAS Strings and series ofbatteries with reverse return linkup There's an interesting "back story" to th

Re: [RE-wrenches] Sandia study - WAS Strings and series ofbatteries with reverse return linkup

From: "Allan Sindelar" To: "'RE-wrenches'" Sent: Friday, December 04, 2009 10:42 PM Subject: Re: [RE-wrenches] Sandia study - WAS Strings and series ofbatteries with reverse return linkup There's an interesting "back story" to the 1996 battery study

Re: [RE-wrenches] Sandia study - WAS Strings and series of batteries with reverse return linkup

HI Allan, Here is an interesting way that statistics can make bad results. It might be that 64% of all solar batteries are VRLA, but I would guess that most of the those "systems" are single battery ones. Such as road call boxes, lighting etc which number in the 10's of thousands of systems but

Re: [RE-wrenches] Sandia study - WAS Strings and series of batteries with reverse return linkup

There's an interesting "back story" to the 1996 battery study you cite, Joel. It illustrates the pitfalls that can occur when you don't ask the right questions of the right people. I reviewed that study a few years later, and was surprised to read that Mr. Hund's survey suggested that 64% of batte