Lithium battery prices

I have found the batteries to be less than half the cost of upgrading to lifepo4. The other stuff eg wire fuses bus bars alternator controller etc etc really adds up. For me though it has been worth it
 
melvynpatrick said:
I have found the batteries to be less than half the cost of upgrading to lifepo4. The other stuff eg wire fuses bus bars alternator controller etc etc really adds up. For me though it has been worth it
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This is where careful design pays dividends. I built a whole new system in a compact space so the heavy cable runs are as short as possible.
I'm thinking of switching over to NH fuses because the cost of class T is just silly.
And I didn't touch the alternator at all. It's an entirely standalone system that just charges from solar.
 
Buck Turgidson said:
If you really want to know ask it to list five types of berry and then ask how many Rs are in each! I stopped using AI LLMs a year ago after readying so much nonsense spouted with such confidence.
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I used ChatGPT recently when I was revising for my Yachtmaster exam. It was useful, but with significant flaws.
E.g. I could ask it to make me a quiz to test my knowledge of a specific subject. And I could tailor this to address my weak points. It can be a really effective tool when used this way. The problem is, sometimes it gets stuff plain wrong. I ended up in a big argument with it when revising IRPCS. It was adamant that two vertical green lights indicates a fishing boat. I answered that this could only be the safe side to pass of a dredger or similar, but the AI stuck to its guns and I had to really push the point, quoting rule numbers, before it accepted that it was wrong. There were a few similar issues elsewhere.
What's worrying is that this was a subject where there really is very little room for error or opinion. It's scary that people are relying on it for anything remotely important.
 
When switching to lithium what do you do with existing chargers? I’ve got a nice 3 way split charge system for the alternator and a mains battery charger with three outputs. And does everything still share a common earth?
 
Otter said:
When switching to lithium what do you do with existing chargers? I’ve got a nice 3 way split charge system for the alternator
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You cannot charge LFP directly from a standard alternator. If the 3 way split actually feeds 3 batteries/banks then leave it in place but disconnect the cable from it to the domestic bank. Fit a DC-DC charger to charge the LFP from the engine battery.
Otter said:
and a mains battery charger with three outputs.
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As above, disconnect the cable from the charger and fit a new charger that can be correctly set for LFP, such as Victron.
Otter said:
And does everything still share a common earth?
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It isn't Earth, it's negative ;) Leave it as it is.
 
Sea Change said:
I used ChatGPT recently when I was revising for my Yachtmaster exam. It was useful, but with significant flaws.
E.g. I could ask it to make me a quiz to test my knowledge of a specific subject. And I could tailor this to address my weak points. It can be a really effective tool when used this way. The problem is, sometimes it gets stuff plain wrong. I ended up in a big argument with it when revising IRPCS. It was adamant that two vertical green lights indicates a fishing boat. I answered that this could only be the safe side to pass of a dredger or similar, but the AI stuck to its guns and I had to really push the point, quoting rule numbers, before it accepted that it was wrong. There were a few similar issues elsewhere.
What's worrying is that this was a subject where there really is very little room for error or opinion. It's scary that people are relying on it for anything remotely important.
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Sorry about thread drift: I have begun to realise that my way of dealing with AI is the same as a friend of mine used to deal with trades people. He used to ask one what he should have done about an issue and then ask another if he should have that done. Repeat with a third.
I ask three different llms about stuff and then I can compare them. I then ask them why. From this I'm build up a general understanding; and from that I can phrase my questions better. But the end point is still the same as for my friend: don't believe it until you know it is true!

In both our cases we are dealing with the subject of which we know sweet fa!
 
mattonthesea said:
Sorry about thread drift: I have begun to realise that my way of dealing with AI is the same as a friend of mine used to deal with trades people. He used to ask one what he should have done about an issue and then ask another if he should have that done. Repeat with a third.
I ask three different llms about stuff and then I can compare them. I then ask them why. From this I'm build up a general understanding; and from that I can phrase my questions better. But the end point is still the same as for my friend: don't believe it until you know it is true!

In both our cases we are dealing with the subject of which we know sweet fa!
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Which is why in life, you should always be able to estimate something before accepting a response, whether it be Google, a tradesman or an electronic calculator. Eg, what's a third of ten? In your head, about 3 and a bit. Calculator says 3.3333333 and not 33.33 because you made a mistake pressing a button.

Many people struggle with quotes because they don't understand it's £10 to use the hammer but £300 for the knowledge and experience of where to hit it.
 
wonkywinch said:
Which is why in life, you should always be able to estimate something before accepting a response, whether it be Google, a tradesman or an electronic calculator. Eg, what's a third of ten? In your head, about 3 and a bit. Calculator says 3.3333333 and not 33.33 because you made a mistake pressing a button.

Many people struggle with quotes because they don't understand it's £10 to use the hammer but £300 for the knowledge and experience of where to hit it.
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Yes, we used to have a numeracy (not maths) test for our students; one of the multiple choice questions gave some information and asked fast something was. All four answers were 4.2 but only one was m/s. In the practice/support sessions I was always surprised at how many would work through the calculation and then be stumped by the choice.
 
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