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Old 15-02-2013, 10:54   #31
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Re: DIY Lithium As A House Bank - 1

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I'm not sure if a latching relay is less reliable for interrupting a current. They all have scary mechanical parts, and the risk is that the contacts get welded together. That would be the end for both types I think.
Omron do a nice range of 200A relays with 1000A disconnect. , 11W of consumption !. unlikely to weld those together.

Anyway if that happens, all that really happens is you ruin a set of LFPs.!

Dave
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Old 15-02-2013, 10:56   #32
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Re: DIY Lithium As A House Bank - 1

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If you position the LVC as a disconnect also, wouldn't you eliminate your ability to continue charging in a LV situation? Plus isolating your bilge pumps/alarms?
Dwain
I would not automatically have high power charging sources re-enagage automatically after a auto-LVC event. In my opinion I would prefer to understand what had happended and why , before re-engaging charging. If the batteries were drained quite a lot , I would even consider pre-qualifying charge first.

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Old 15-02-2013, 11:28   #33
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Re: DIY Lithium As A House Bank - 1

Frank-
You mention translation errors, which brings to mind:

Something to at least look at, "Five Year Warranty" often seems to mean five year pro-rated against list price, so you will be buying the replacement at a price pro-rated against LIST not discounted prices. And often no initial free replacement period. Of course, the exact terms will vary by the seller AND by the country you are in when you place the order, so a bit of research up front could save a big surprise three years from now. Unless the batteries really do last forever.

Some of the vendors appear to have very little experience on the consumer market, and as a result their warranty terms may be in significant conflict with warranty statutes wherever you are. Which can be a good thing or a bad one.
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Old 15-02-2013, 11:39   #34
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Re: DIY Lithium As A House Bank - 1

I would suggest that at the moment, anyone dabbling in LYP is not to bothered about warranty.
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