Idiot's guide to a self build battery

Countrypaul
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Re: Idiot's guide to a self build battery

#351

Post by Countrypaul »

Joe, as they say a picture tells a thousand words, certainly looking at those graphs things look good.
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Joeboy
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Re: Idiot's guide to a self build battery

#352

Post by Joeboy »

Countrypaul wrote: Wed Nov 09, 2022 9:42 am Joe, as they say a picture tells a thousand words, certainly looking at those graphs things look good.
I'll photo a before and after graph to show the change in SOC angle. It is a marked change.
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Joeboy
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Re: Idiot's guide to a self build battery

#353

Post by Joeboy »

08.40. SOC was down to 82%, had the day using the Esaw chopping logs and running the splitter. At 15.20 the SOC was 88%. That was a flatline graph day, never seen the like :shock: :D 8-) Over the moon with this set up. It helps that I'm running my life like every kWh is precious and all the more satisfying for that.

Image
Real Powerwall! :twisted:
Image
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
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Krill
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Re: Idiot's guide to a self build battery

#354

Post by Krill »

It looks like you have been refilling the pink bubbles from the motor oil container?
Solar PV: 6.4kW solar PV (Eurener MEPV 400W*16)
PV Inverter: Solis 6kW inverter
Batteries: 14.4kWh LiFePO4 batteries (Pylontech US5000*3)
Battery Inverter: LuxPowertek 3600 ACS*2 battery inverter
WBS: 8kW Hunter Avalon 6 Multifuel burner (wood only)
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Joeboy
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Re: Idiot's guide to a self build battery

#355

Post by Joeboy »

It seems that 92% soc and 3.33V in the LF280's are the consistent readings seen first thing in the day. 8-)

Quite a lot of PV charging goes on through the day before it ticks over to 3.34V. Having to recalibrate my expectations. :D
This is excellent 👌
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
Kenny000666
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Re: Idiot's guide to a self build battery

#356

Post by Kenny000666 »

So I’ve been keeping an eye out on Alibaba, AliExpress and BasenGreen

Is there any any reputable sites (not sure I trust Alibaba, or AliExpress).

Price wise, since you guys started 3-4 months ago, the prices have shot up? For 16 x lf280s (which are almost the same price as 304) we’re talking almost £2000 now. Maybe I’ll hold out?
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Stinsy
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Re: Idiot's guide to a self build battery

#357

Post by Stinsy »

Kenny000666 wrote: Fri Nov 11, 2022 12:27 pm So I’ve been keeping an eye out on Alibaba, AliExpress and BasenGreen

Is there any any reputable sites (not sure I trust Alibaba, or AliExpress).

Price wise, since you guys started 3-4 months ago, the prices have shot up? For 16 x lf280s (which are almost the same price as 304) we’re talking almost £2000 now. Maybe I’ll hold out?
You're not "trusting Alibaba or AliExpress" it is just a listing site the same as eBay, you have to trust the seller.

If you want LiFePO4 batteries from a UK seller you're going to pay a big premium from Fogstar (for example).
12x 340W JA Solar panels (4.08kWp)
3x 380W JA Solar panels (1.14kWp)
5x 2.4kWh Pylontech batteries (12kWh)
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(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
Oldgreybeard
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Re: Idiot's guide to a self build battery

#358

Post by Oldgreybeard »

My experience of buying through Aliexpress has been better than buying through eBay, although I may just have been lucky. Aliexpress also now looks after the VAT and import costs in the main (or seems to).
25 off 250W Perlight solar panels, installed 2014, with a 6kW PowerOne inverter, about 6,000kWh/year generated
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Kenny000666
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Re: Idiot's guide to a self build battery

#359

Post by Kenny000666 »

Hi Stinsy

I mean, I agree it’s just a listing site, but I guess, as you don’t know who the supplier is, how do you know if your getting actual Grade A stuff or if it’s just Grade B etc. Whereas maybe a supplier like BasenGreen may be more reputable? I read one of the earlier posts and this was one of the suggestions to be cautious about.
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Joeboy
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Re: Idiot's guide to a self build battery

#360

Post by Joeboy »

Kenny000666 wrote: Fri Nov 11, 2022 2:32 pm Hi Stinsy

I mean, I agree it’s just a listing site, but I guess, as you don’t know who the supplier is, how do you know if your getting actual Grade A stuff or if it’s just Grade B etc. Whereas maybe a supplier like BasenGreen may be more reputable? I read one of the earlier posts and this was one of the suggestions to be cautious about.
I've left the name of who I dealt with in the thread as well as the company name. Just get it bought and don't gnaw on it. Trust me, don't procrastinate, its the death of progress. :twisted:
Last edited by Joeboy on Fri Nov 11, 2022 2:38 pm, edited 2 times in total.
19.7kW PV SE, VI, HM, EN & DW
Ripple 7kW WT & Gen to date 19MWh
42kWh LFPO4 storage
95kWh Heater storage
12kWh 210ltr HWT.
73kWh HI5
Deep insulation, air leak ct'd home
Zoned GCH & Hive 2
WBSx2
Low energy bulbs
Veg patches & fruit trees
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