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Author Topic: Off grid solar in 2018  (Read 2802 times)

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grenadier

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Re: Off grid solar in 2018
« Reply #15 on: July 17, 2018, 02:07:28 pm »

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Which model do you have? I'll research it better and see if I can sell my first born :)
Male or female?
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doomsdayprepper4570

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Re: Off grid solar in 2018
« Reply #16 on: August 20, 2018, 07:29:18 pm »

I just buy the 150's Rob.
Only running a 24 volt inverter.
I was cleaning up in the new shed and found a new 1800 watt 24 volt latronics inverter I must
have bought at some stage.
That makes like 3 spares now  ::) :o ;D ;D ;D
I will be using one down the caretaker hut on the other property.
Just waiting for ergon to pay us the $4,000 they owe us at x-mas time.
I can get 4 x L16H a/c trojan batteries for that and have some change.
Its only 435amps at 24 volts. But they is no-one living there atm.
It will run the pressure pump and lights when needed.
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Gympiegoat

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Re: Off grid solar in 2018
« Reply #17 on: October 06, 2018, 10:19:33 am »

Mate of mine in Nth Qld just got a tesla powerwall installed, $11,000 & a few dollars. He already had 22 solar panels. He loses a bit from shade from a big mango tree late in the arvo but not much.
Air con, water pump & cooking are his biggest users & he wants another aircon unit for his workspace. Gem cutting. If the second air con costs too much to run he might get a second powerwall.
They lose power regularly with brownouts for hours- storms & cyclones. No power for 2 weeks after last cyclone. Great for the freezer & being 40 mins out of town.
He reckons it will pay for itself on early figures in 6-7 years without the second air con. Has 10 year warranty. 
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doomsdayprepper4570

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Re: Off grid solar in 2018
« Reply #18 on: October 08, 2018, 07:29:42 am »

Contacted a fellow called Serge down on suny coast he is seriously into solar gear.
I am mainly interested in his lead crystal batteries.
Not cheap but they have a 20 lifespan and are a lot simpler than lithium.
Not liquid acid in them and can go 12 months without charge and no damage.
Worth a look at.
Getting one for my truck to test run them.
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graynomad

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Re: Off grid solar in 2018
« Reply #19 on: October 08, 2018, 07:35:46 am »

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Contacted a fellow called Serge down on suny coast he is seriously into solar gear.
I am mainly interested in his lead crystal batteries.
Not cheap but they have a 20 lifespan and are a lot simpler than lithium.
Not liquid acid in them and can go 12 months without charge and no damage.
Worth a look at.
Getting one for my truck to test run them.

Have a good research about lead crystal, some (maybe all) need a full discharge followed by a 30% (of the 20C rating) charge every year or so. This is catching people without large chargers, for example if you had 1000Ah of batteries you would have to charge them at 300A every now and then.

Also we have had two large ones on a pallet for over two weeks trying to FULLY discharge them and the bastards still have some charge, they were traded in I think but that would be an issue if you needed them for your fridge :).

To be fair it seems nobody really knows how to deal with them, even the manufactures got caught I think.  Maybe your mate is onto this more.
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doomsdayprepper4570

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Re: Off grid solar in 2018
« Reply #20 on: October 08, 2018, 07:38:42 am »

Depends a lot on the brand Rob.
He has been in business/solar for 40 years.
What amp hour were those cells?
You can get them from 10 amp hour 12 volt all the way up to 2 volt 2500 amp hour.
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graynomad

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Re: Off grid solar in 2018
« Reply #21 on: October 08, 2018, 07:40:41 am »

These are big buggers, maybe 200Ah @ 12v.
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Arkane

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Re: Off grid solar in 2018
« Reply #22 on: October 08, 2018, 12:15:49 pm »

Batteries!
The best I found were 12v deep cycle, Lead acid, 260kwh (75kg ea) at $750 new fresh out of factory!
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doomsdayprepper4570

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Re: Off grid solar in 2018
« Reply #23 on: October 08, 2018, 05:00:28 pm »

I can give you a contact number for Serge and you can check for yourselves.
Will be getting 2 x 12 volt 220 amp hour batteries for the caretakers hut.
If they work well I will buy 6 more and that should be enough for a couple with a fridge etc.
May reconfig it to 24 volt system as I have inverters to suit 12 and 24 volts.
Just a bit more work to series and parallel the panels to get enough volts for 24 volt system.
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