Idiot's guide to a self build battery
-
- Posts: 561
- Joined: Sun Jul 18, 2021 11:50 am
Re: Idiot's guide to a self build battery
Joe, as they say a picture tells a thousand words, certainly looking at those graphs things look good.
Re: Idiot's guide to a self build battery
I'll photo a before and after graph to show the change in SOC angle. It is a marked change.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.
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
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
Re: Idiot's guide to a self build battery
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 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.
Real Powerwall!
Real Powerwall!
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
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
Re: Idiot's guide to a self build battery
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)
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)
Re: Idiot's guide to a self build battery
It seems that 92% soc and 3.33V in the LF280's are the consistent readings seen first thing in the day.
Quite a lot of PV charging goes on through the day before it ticks over to 3.34V. Having to recalibrate my expectations.
This is excellent
Quite a lot of PV charging goes on through the day before it ticks over to 3.34V. Having to recalibrate my expectations.
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
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
-
- Posts: 78
- Joined: Wed Aug 31, 2022 9:16 am
Re: Idiot's guide to a self build battery
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?
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?
Re: Idiot's guide to a self build battery
You're not "trusting Alibaba or AliExpress" it is just a listing site the same as eBay, you have to trust the seller.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?
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)
LuxPower inverter/charger
(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
3x 380W JA Solar panels (1.14kWp)
5x 2.4kWh Pylontech batteries (12kWh)
LuxPower inverter/charger
(Artist formally known as ******, well it should be obvious enough to those for whom such things are important.)
-
- Posts: 1873
- Joined: Thu Sep 09, 2021 3:42 pm
- Location: North East Dorset
Re: Idiot's guide to a self build battery
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
6 off Pylontech US3000C batteries, with a Sofar ME3000SP inverter
6 off Pylontech US3000C batteries, with a Sofar ME3000SP inverter
-
- Posts: 78
- Joined: Wed Aug 31, 2022 9:16 am
Re: Idiot's guide to a self build battery
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 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.
Re: Idiot's guide to a self build battery
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.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.
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
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