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Old 20-12-2017, 03:48   #5956
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Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

The problem is solved.
Victronic sets the charge level by default to 75%.
I have now reset it to 70A so now there is full charge.
Thanks for all your advices.
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Old 20-12-2017, 06:21   #5957
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Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

Glad to hear it and thanks for reporting back, so many don't bother
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Old 13-01-2018, 10:45   #5958
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Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

I posted a queston to a new thread, but maybe this is a better place to post?

Can anyone help with this question:

I've got a dead cell, with 0.7v. A 700Ah unit. A complete mystery what went wrong. Maybe it just died after a few months disconnected. It's an ex Balqon cell, so not with a pristine heritage. It maybe the Housepower BMS I was using that went awry. Anyway, beyond the help of any defibrilator or life support regime.

Where can I get a replacement please, capable of quick delivery to the Caribbean?

Originally posted here:
LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks
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Old 13-01-2018, 10:57   #5959
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Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

If you can't, please at some point, post your thoughts on lessons learned
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Old Yesterday, 16:08   #5960
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Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

Finally finished my bank!

Used a Blue seas 9012 as a main relay, a 7713 switch as the discharge relay, a RA-700112-DN 70A relay for the charge bus and another RA-700112-DN 70A relay to cut the alt reg power wire.

The 7713 needed a MOSFET to invert output from pulling down to a +v.

Below are the voltages



Charger voltages are set so low as it keeps the state of charge at around 30 - 50%. Night/morning before we go somewhere, I'll change the values to 13.8 to get the battery charged up before I leave.
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Old Yesterday, 16:41   #5961
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Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

Thanks, grest stuff!

Quote:
Originally Posted by alctel View Post
Below are the voltages
Pic doesn't work from here
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Old Yesterday, 16:43   #5962
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Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

Can't edit - does this work?

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Old Yesterday, 16:56   #5963
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Re: LiFePO4 Batteries: Discussion Thread for Those Using Them as House Banks

Perfect, thanks much
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