I missed where you decided on lithiumShould I just get a manual shut off switch for the solar positive and stop worrying?
The spec sheet states that it does have an internal temperature sensor (it actually says all of their charge controllers have it) and running Victron Connect against a demo 100/20 shows the option for cold temp shut off for LiFePO4 batteries.PS I’m assuming the 100/20 lacks cold temp shut off, since the Victron website doesn’t seem to say.
Which battery? I've seen cases where a 24V 100Ah battery is cheaper than 2 12V 100Ah batteries from the same company. SOK is one example. A Battle Born 24V 50Ah is well under the cost of two 12V 50Ah batteries and also cheaper than a 12V 100Ah.Why is a 24v 100 ah battery so much more expensive than two 12 volt 100 ah batteries? I’m seeing about 10 to 20 % difference in these prices in lifepo4.
Expensive? The 100/20 is only $157.with expensive Victron SC
This is for a van, right? LiFePO4 is smaller and lighter for a lot more usable capacity. It's also cheaper in the long run due to the number of cycles you can get. But you do need to deal with avoiding charging when the batteries are close to freezing.Why not ignore lithium and go back to a quality AGM lead-acid?
The Peukert effect.Why not ignore lithium and go back to a quality AGM lead-acid?
“Quality AGM”Why not ignore lithium and go back to a quality AGM lead-acid? Maybe buy the Victron 75/15 with fla?
Personally, I would only consider lead acid for the use cases where LFP is contraindicated.
AGM isn’t really in the cost ballpark of FLA unless the flooded batteries are high end and/or 6V1: You can afford a solar setup OR LFP batteries, get the FLA's and upgrade later
Challenge accepted 48v 60 usable Ah of AGM = $1480, 48v 60 usable Ah of FLA = $352Also Please provide a product link to a quality AGM lead acid battery.
True, but my point is that FLA's are a great way to cut up front costs when you're working on a budget. AGM's are still much cheaper than FLP's though up front cost.
Also:
Challenge accepted 48v 60 usable Ah of AGM = $1480
Return challenge: please provide a product link to a 48v 60Ah LFP within 100 miles of Ione, WA for about $1500. FLA's and AGM's are about 50 miles away for reference.
Hence the paranoia aspect of AGM's or FLA's.
Incidentally, I got 33.9 volts from the 2s2p panels late yesterday afternoon, so that seems OK.OK, I’m ready to order the battery. I think a 24 v 100 ah Ampere Time will be best because it will be enough to handle what I need now and I can connect another one in parallel if my needs increase later. I’m hoping someone will tell me if I would be better off with two 12 v batteries in series - especially since I’m still ignorant as can be about the potential pitfalls. I’m glad Will thinks that an Ampere Time with a Victron 100/20 SC will be a good inexpensive combination which still gives low temp charging protection. Later I can add a shunt if I need it. At least with the battery here I can start building the interior of the van.
All comments are appreciated, especially since I won’t pull the trigger until this evening, lol.
Do the ampere time batteries support being connected in series?OK, I’m ready to order the battery. I think a 24 v 100 ah Ampere Time will be best because it will be enough to handle what I need now and I can connect another one in parallel if my needs increase later. I’m hoping someone will tell me if I would be better off with two 12 v batteries in series - especially since I’m still ignorant as can be about the potential pitfalls. I’m glad Will thinks that an Ampere Time with a Victron 100/20 SC will be a good inexpensive combination which still gives low temp charging protection. Later I can add a shunt if I need it. At least with the battery here I can start building the interior of the van.
All comments are appreciated, especially since I won’t pull the trigger until this evening, lol.
A single 24 volt battery will be the easier to integrate.Yes. On Amazon, under the 24v, 100ah listing, they say you can connect 4 in parallel and 2 in series.
A "real man" doesn't worry about his masculinity based on a battery.Use AGM, the real Mans battery.