[RE-wrenches] Charging Multiple Battery Banks

[Larry]

Keep in mind that the Midnite controller has a combined PV and bat. 
negative and the Blue Sky requires isolated PV and bat. negative.

Larry Crutcher
Starlight Solar Power Systems

On 3/24/15 6:11 PM, Jeremy Rodriguez wrote:
> The thought was to charge the batteries for a new building utilizing 
> an SW4024 with new classic controller and new L A batteries, and once 
> those batteries are charged send the PV to the house system which is 
> the 48v setup with dual outback inverters and dual SB3048 CCs.  Lead 
> acid batteries as well. 3 years old
> I've never had this come up in 16 years!
>
>
> Jeremy Rodriguez
> All Solar, Inc.
> 1463 M
> Penrose Colorado 81240
>
> Sent by Jeremy's iPhone. Sorry for typos and shorthand!
>
> On Mar 24, 2015, at 5:31 PM, "Ray Walters" <ray at solarray.com 
> <mailto:ray at solarray.com>> wrote:
>
>> What's the reasoning behind two different battery banks at different 
>> voltages? What is the other equipment involved: batteries type, age, 
>> inverters, etc.?
>> R.Ray Walters
>> CTO, Solarray, Inc
>> Nabcep Certified PV Installer,
>> Licensed Master Electrician
>> Solar Design Engineer
>> 303 505-8760
>> On 3/24/2015 5:07 PM, Jeremy Rodriguez wrote:
>>> It would be 2kw of PV
>>>
>>> Jeremy
>>> All Solar
>>> Penrose, CO
>>>
>>> ------------------------------------------------------------------------
>>> Date: Tue, 24 Mar 2015 12:17:20 -1000
>>> From: jerrysgarage01 at gmail.com
>>> To: re-wrenches at lists.re-wrenches.org
>>> Subject: Re: [RE-wrenches] Charging Multiple Battery Banks
>>>
>>> How big of a system are you looking at as some of the smaller charge 
>>> controllers are auto sensing
>>> Jerry
>>>
>>> On Tue, Mar 24, 2015 at 12:11 PM, Jeremy Rodriguez 
>>> <allsolarjeremy at msn.com <mailto:allsolarjeremy at msn.com>> wrote:
>>>
>>>     Wrenches,
>>>     I have a client that wants to charge a 24v battery bank and a
>>>     48v bank with the same array. Different charge controllers, with
>>>     some type of relay is what I was thinking, and using the
>>>     controller's aux. 12v output for the relay control.
>>>     The primary battery to be charged would be the 24v bank, then
>>>     once it is fully charged, divert the pv to the secondary
>>>     controller at the 48v bank.
>>>
>>>     Any comments or recommendations on this would be helpful.
>>>
>>>     Jeremy Rodriguez
>>>     All Solar Inc.
>>>     Penrose, CO
>>>
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