I don't have a problem with world trade, its the incredibly high proportion that comes from a one party authoritarian state that punishes free speech and doesn't even care for its own citizens that bothers me.
From Chinese components.
The resting voltage of AGM's is higher than ordinary lead acid so your batteries are probably in a worse state than you think.Well this evening I ran a draw down test on my batteries. I did it after dark to avoid solar charging. I switched off the EHU and let the batteries settled for about 45 minutes before starting the test. All the readings I am quoting come from the BMV 700 battery monitor.
As I have said before I have 2 x 95Ah (at C20) Exide AGM batteries which are just over 6 years old.
I started with the voltage at 13.0V, and the batteries showing as being 100% full. I then switched all the lights on, which showed as approximately a 5.5A draw on my BMV. I left all the lights on for 4 hours and I then checked again. The BMV showed I had drawn a total 22.1Ah, the battery voltage was 12.4V and that the batteries were 76% full. I then switched all the lights off and left it for an hour for the battery to get back to rest. On checking again the draw was now 22.6Ah (I guess that was because of background draw), the voltage had gone up to 12.6V and the battery was now 75.7% full.
The figures from the battery percentages seem to suggest that my total battery bank capacity has dropped over a half to about 90Ah. If that is the case Lenny HB will be saying I told you so
What do you experts think please? Are my batteries reaching the end of the road?
Probably. And there is the problem in trying to not buy from one country when there are worldwide integrated supply chains.From Chinese components.
Lenny HB As you well know I would much rather enjoy myself, than fiddling with things I don't understand. I thought the Peukert's whatsit that the BMV uses takes into account degradation. But you must remember I am a civil engineer, which is an oxymoron, because I am not really an engineer and I am are rarely civil.
Hope my lithium,s are on that boat due the end of the monthA little pic for those reading this and wondering what's wrong with buying Chinese.
UK homes overshadowed by monstrous shipping container from China
HOMES in Southampton have been overshadowed by a massive container ship from China and the scene has been captured in an extraordinary picture.www.express.co.uk
Who are you buying them from please?Hope my lithium,s are on that boat due the end of the month
I am making my own up Peter fancied a project.
a.aliexpress.com
Bloody hell ......... And here I am struggling to understand whether or not my batteries need changing. You are a braver man than me (but then most are).I am making my own up Peter fancied a project.
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Let us know if you get caught for import tax & VAT.I am making my own up Peter fancied a project.
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The write up indicates no UK delivery ,Dave, are you having them delivered to somewhere in the EU to pick up on your travels?
That's exactly what is inside most prismatic lithium batteries without the fancy plastic box but you can get one of them if you wantThat photo will give peterc10 nightmares.
a.aliexpress.com
I've come out in a bloody rash all over.That photo will give peterc10 nightmares.
Will do but they say its all in don't know how the do it but loads of positive feedback, time will tell.
I've come out in a bloody rash all over.
Interesting point. What is the difference between prismatic cells and tubular cells? Which is better? Just comparing makes and prices.
Sod all this difficult stuff. I am off now to put up a blackout blind in the landing window of our house. That will keep me busy without having to think too much
Going to do a capacity test plus top balance, they state at least 280ah capacity
No, Peukert’s whatsit makes an allowance for the rate you take amps out of the battery. If you are hammering your battery with a large inverter you will get a lot fewer amp hours out of it than if you are just running a few lights. The Ah given by battery manufacturers is based on a C20 rate, that is at a rate of 5A for a 100Ah battery, if you are drawing anything more than 5A the battery capacity effectively drops below 100Ah. Basic lead acid batteries are worse than more expensive ones with LiFePO4 the best.
free shipping but not free import duty unless it gets missed
Yeah but they are building houses really small these daysA little pic for those reading this and wondering what's wrong with buying Chinese.
UK homes overshadowed by monstrous shipping container from China
HOMES in Southampton have been overshadowed by a massive container ship from China and the scene has been captured in an extraordinary picture.
Thanks
Which one?None, you take your chance on that one, which is why I bought my cells from a UK vendor and he was English as well.
Makes it into a nice neat job.That's exactly what is inside most prismatic lithium batteries without the fancy plastic box but you can get one of them if you want
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bought a Daly BMS and the active balancer like yours