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

[Aaron Mandelkorn]

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 Mandelkorn
President / Founder
Renewable Energy Outfitters
www.reosolar.com
Off Grid Depot
www.offgridnow.com
970-596-3744

On 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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