• Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education skip experiences global resources cider press projects digital market permies.com private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Anne Miller
  • Pearl Sutton
  • r ranson
  • Nicole Alderman
stewards:
  • Joseph Lofthouse
  • paul wheaton
  • Mike Haasl
master gardeners:
  • jordan barton
  • John F Dean
  • Carla Burke
  • Greg Martin
gardeners:
  • Jay Angler
  • Leigh Tate
  • thomas rubino

Inverter Input

 
Posts: 135
14
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
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 gardener
Posts: 2159
Location: southern Illinois.
533
goat cat dog chicken composting toilet food preservation bee solar wood heat homestead
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I have worked for years with Missouri Wind and Solar.  Why not give them a call?
 
pollinator
Posts: 1577
Location: Victoria BC
229
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
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
Posts: 3895
Location: latitude 47 N.W. montana zone 6A
1120
cat pig rocket stoves
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
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
Posts: 432
Location: North central Ontario
56
kids dog books chicken earthworks cooking solar wood heat woodworking homestead
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
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 gardener
Posts: 2159
Location: southern Illinois.
533
goat cat dog chicken composting toilet food preservation bee solar wood heat homestead
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
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
pollinator
Posts: 1577
Location: Victoria BC
229
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
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.
 
I child proofed my house but they still get in. Distract them with this tiny ad:
Rocket Mass Heater Manual - now free for a while
https://permies.com/goodies/8/rmhman
reply
    Bookmark Topic Watch Topic
  • New Topic