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Inverter Input

 
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So I'm experimenting with lead-alum (reconditioned) batteries.
Lead-alum has a slightly lesser voltage capacity, 6 cells winds up creating 11.6 ish volts after normalizing a 14 volt charge.
If I series them it gives me 23 volts, perfect for a 24 volt panel to drizzle power into all day long.

I'm looking for a (cheeap!) 1000 - 1500 watt inverter that can tolerate a consistent low voltage input and still provide a true sine full voltage (115v) most published info gives nominal voltage but I assume there has to be an input range?
And a charge controller that I can adjust the setpoints on.....
 
master pollinator
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Location: southern Illinois.
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I have worked for years with Missouri Wind and Solar.  Why not give them a call?
 
pollinator
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A manual for a quality inverter should provide information on the low voltage cutoff point; ideally this will be a range within which the user can adjust the settting.
 
gardener
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Hi Bill;
Here is a link to Missouri wind and solar ) https://mwands.com/
I have not done business with them myself  but they have been around for years.  

I tried reconditioned battery's years ago , nickel cad not lead alum.  
I gave up on them within 2 years and went back to L-16's

From what I read, the Alum swap does work on a fairly decent lead acid battery.
Keep us posted on how well this works for you.
 
pollinator
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Of the cheaper full sine wave 8nverters I've used the kissae had a voltage cutoff adjustment of either 12 volts or 11.5 volts  so 24 or 23 volts. Check its manuals. The problem of course is most of the cheap inverters are expected to run on starting batteries of a vehicle so the voltage cutoff is set so you can still start...
So try Kissae or maybe the more expensive aims models which have some programming functions.
 
John F Dean
master pollinator
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It just hit me my post was a little vague.  I am not an employee of MWANDS, I am a long time customer.
 
D Nikolls
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I took a look at the control panel for my Victron Multiplus 3000/24; minimum permitted setting for 'DC input low shutdown' is 18.60 volts. Oddly, this is also the default, waaay too low for most applications IMO.
 
What are you saying? I thought you said that Santa gave you that. And this tiny ad:
Rocket Mass Heater Plans - now free for a while
https://permies.com/goodies/7/rmhplans
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