#101389  by Teardrop
 Fri Oct 16, 2015 1:06 pm
A supplier of American Valence Lithium batteries is closing down. 100 amp hour for $500.00. Still in packaging. Has about 20 left. If interested PM me and I will give contact details. Nothing in it for me. I just know there are a few out there who are not purchasing for price reasons and this could be an opportunity.

Dene
 #101529  by muzzanic
 Mon Oct 19, 2015 2:46 pm
They are all gone, We just got the last 12 :o

Murray
 #101538  by muzzanic
 Mon Oct 19, 2015 4:17 pm
Yep very happy.

Now to fit them in our van & our 2 friends camper vans.

We had written of going to Lithium for now ( as much as I like it ) But this deal was just to good to let go by, Thank you so so much for letting us know about them.

Murray
 #101611  by scubadoo
 Wed Oct 21, 2015 4:27 pm
Dene

Probably not the correct place to post but I just read your query on another forum.

Stick to the Lithium setting on your Victron solar controller.
Your new batteries will thank you for it. A long term 13.8V float would be too high for me.
 #101614  by Teardrop
 Wed Oct 21, 2015 5:56 pm
Thanks Neville,

That's what I've done at the moment because I'm too scared to do otherwise. I might change the settings manually in due course, but just looking at the controller it seems you need a special connection for the USB - is that correct? I was hoping to get the batteries up to their capacity, and Valence say their max voltage is 14.6 and Float Voltage is 13.8. They are a lot different from the Chinese style batteries of which we have had a 100 amp hr one for a couple of years - which incidentally dropped a cell on me the other day (which is what resulted in all this happening in a hurry). These Valence ones also do their own internal cell balancing which is a plus.

Dene
 #101615  by scubadoo
 Wed Oct 21, 2015 7:01 pm
Mark please move/split this appropriately if necessary.

Yes, they do require either an expensive dedicated VE.Direct to USB adaptor or if you are up to it a DIY mockup equivalent.
I purchased a few of these $2 devices and have successfully talked to the controller with the Victron mpptprefs program but at the moment I'm happy enough with the default lithium setting.
http://www.ebay.com/itm/USB-To-RS232-TT ... XQTT9Rxubc

Even AA Solar recommend a bulk 14.6V charge for my Sinopoly 4 cell pack but that certainly causes my cells to drift a little (up to 0.15V) from the usual perfect voltage balance.
With the alternator limited to 14.1V and the Victron to 14.2 bulk the cell voltages remain almost identical.
The Victron quickly floats at 13.4V and appears to remain there for the rest of the day.

The Alphatron technical guy seemed pleasant enough and may be happy to program the controller if asked nicely. :?: ;)
 #101621  by Teardrop
 Wed Oct 21, 2015 9:24 pm
Thanks Neville, I will leave it at the auto Li setting for now. Its just that you can tell from voltage what a lead acid battery is holding at (within reason), but not with a Lithium, so have no idea how much capacity I will be missing out on. Probably won't make any difference - time will tell.

Dene
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