[RE-wrenches] 24v to 48v upgrade help

[Chris Worcester]

Hi Aaron, Check out the Battle Born BBGC3 270 Ah 12 vdc LiFePO4,May make sense for you. Chris Worcester chris at solarwindworks.com530-448-9692Sent from my Samsung Galaxy s9.
-------- Original message --------From: Aaron Mandelkorn <reosolar at gmail.com> Date: 1/27/22  9:09 AM  (GMT-08:00) To: RE-wrenches <re-wrenches at lists.re-wrenches.org> Subject: Re: [RE-wrenches] 24v to 48v upgrade help All,  I will do a load analysis for the 24v loads.  I am looking to get around 800ah of LI storage at 24v.  I typically use the larger 48v batteries from fortress.  The space constraints will not allow for a wall full of small 50ah 24v units. I am not finding much selection of 24v 200ah+ options.  Is sounds like most of the advice I am getting is towards not upgrading to 48v.Aaron MandelkornPresident / FounderRenewable Energy Outfitterswww.reosolar.comOff Grid Depotwww.offgridnow.com970-596-3744On Wed, Jan 26, 2022, 7:59 PM frenergy <frenergy at psln.com> wrote:
  
    
  
  
    Aaron,
                It would be helpful to know how many amps are
      required to power the 24 volt loads and should we assume the
      batteries are toast or nearly so?  The brand of inverter?
                As Jeff said there are 24V L-ion choices.
    
    Bill
    Feather River Solar Electric            
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
    On 1/26/2022 4:16 PM, Aaron Mandelkorn
      wrote:
    
    
      
      Wrenches,
        
        
        I have a customer with a very old 24v off grid
          pv system.  He wants to upgrade his array, inverter and
          battery bank.  There are no options for inverter/chargers over
          4000 watts in 24v dc.  The same goes for lithium iron
          batteries.  Everything (of higher wattage and battery
          capacity) seems to be in 48v only now.  If going to 48 volts
          how do I acomodate the few but important 24v DC loads in the
          home.  Is a 48v to 24v step down converter the best option? 
          What do you think? Any help would be appreciated.  Thank you.
          
          Aaron
            Mandelkorn
            President / Founder
            Renewable Energy Outfitters
            www.reosolar.com
            Off Grid Depot
            www.offgridnow.com
            970-596-3744
        
      
      
      
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