LiFePO4 reference diagram, Alternator version

[s/v Jedi]

Originally Posted by zurk

why should i care about cell voltage ? the battery BMS will passively balance all internal cells and in the case of a real problem with the cells the battery will go offline for return to manufacturer.

its not raw cells ive assembled, its a manufactured product with 10 year warranty.


the only reason some people seem to care about cells is that they are buying cells instead of batteries. i dont really care what the cell state is. all i care about is if the battery works or doesnt.

You should care about these things because they are mandatory. If you don’t have them, you will probably find that your insurance claims would be rejected for not being compliant.

[zurk]

Originally Posted by s/v Jedi

You should care about these things because they are mandatory. If you don’t have them, you will probably find that your insurance claims would be rejected for not being compliant.

nonsense. your homebrew system is more likely to be rejected by insurance while a certified battery which complies with CE, MSDS & UN38.3 (battery), UL1642 & IEC62133 (cells) and shipping UN3480 CLASS 9 installed professionally is the least likely to be rejected by insurance. dont believe me ? talk to your insurance broker and tell him i have 2 choices to install on my boat - a DIY system with cells which fell off a truck or a battery which complies with all certifications and tell me what he says.

[newhaul]

Originally Posted by zurk

nonsense. your homebrew system is more likely to be rejected by insurance while a certified battery which complies with CE, MSDS & UN38.3 (battery), UL1642 & IEC62133 (cells) and shipping UN3480 CLASS 9 installed professionally is the least likely to be rejected by insurance. dont believe me ? talk to your insurance broker and tell him i have 2 choices to install on my boat - a DIY system with cells which fell off a truck or a battery which complies with all certifications and tell me what he says.

Without certain items they will deny your claim no question

[goboatingnow]

Originally Posted by newhaul

Without certain items they will deny your claim no question

Irrespective speculating about what insurance soon or won’t do is just that , speculating. From talking to Pantenious for example they are open to persuasion

[newhaul]

Originally Posted by goboatingnow

Irrespective speculating about what insurance soon or won’t do is just that , speculating. From talking to Pantenious for example they are open to persuasion

Not in the states they aren't. Anything to deny a claim.
If it wasn't required by the marina I would not have it

[Sailmonkey]

Originally Posted by zurk

a DIY system with cells which fell off a truck or a battery which complies with all certifications and tell me what he says.

What is it with you and diy systems? The same cells that fell off a truck are what’s inside your fancy boxes.

[LifesBetterWhenYoureBeating]

Originally Posted by s/v Jedi

I’m sorry, no. I don’t like many edits of it anyway, but if you think something needs changing, please discuss that here, even if the change is only applicable for a smaller group of boats

I wanted it so I can make a diagram of my current setup to ask for feedback

[s/v Jedi]

Originally Posted by gsalgado

I wanted it so I can make a diagram of my current setup to ask for feedback

I made these from scratch, it’s easy with LucidChart. The picture are grabbed from the screen and the wiring is a standard LucidChart feature, incl. rubber banding to make moving items easier.

[Baronkrak]

Originally Posted by zurk

why should i care about cell voltage ?

Maybe you should seek advice from your “ electrical engineer. “

[Baronkrak]

Originally Posted by zurk

installed professionally

Yes professionally. I would question the professionalism of an installer that neglects safety devices.

[goboatingnow]

Originally Posted by newhaul

Not in the states they aren't. Anything to deny a claim.
If it wasn't required by the marina I would not have it

I know from speaking to friends the US boat insurance market seems to have seriously contracted

What I said was that simply speculating say that an insurance company would automatically not cover a diy system simply isn’t true.

As I said engage faithfully with your insurers , make sure they know exactly what’s proposed , justify your processes.

Then your insurers will evaluate your specifics and quote costs and cover limits as they feel are justified. After that process you then , as with all insurers decide if it’s for you.

Over the years I’ve got insurers to agree all sorts of special cases and clauses. Lithium is no different.

( if you are a rank amateur then sure no insurer will look at you etc )

In my case my insurers are open to persuasion and of course have yet to decide on extra costs of exact cover limits. But they are talking

[newhaul]

Originally Posted by goboatingnow

I know from speaking to friends the US boat insurance market seems to have seriously contracted

What I said was that simply speculating say that an insurance company would automatically not cover a diy system simply isn’t true.

Not what I was saying at all. What I was saying is most insurers will do what ever they can to deny a claim such as certain safety features. In your bank build.

Similar but different my agent was reluctant to cover me offshore untill I installed a jack line strap.

[s/v Jedi]

When your lithium battery installation lacks the safety features listed in ISO & ABYC regulations and you don’t have a good reason for that (like a better and even safer system) then you can be sure to get into trouble when insurance claims involving the battery are filed.

I bet your insurance company will not give you a written waiver for not having these safety features.

[newhaul]

Originally Posted by s/v Jedi

When your lithium battery installation lacks the safety features listed in ISO & ABYC regulations and you don’t have a good reason for that (like a better and even safer system) then you can be sure to get into trouble when insurance claims involving the battery are filed.

I bet your insurance company will not give you a written waiver for not having these safety features.

While I agree 100% one thing it's like my pet peeve issue .
The ABYC is not a governing body.
Anything they put out is a recommendation not a regulation.
Yes the insurance industry will go along with those recommendations., but fact remains recommendations nor regulations.

[s/v Jedi]

Originally Posted by newhaul

While I agree 100% one thing it's like my pet peeve issue .
The ABYC is not a governing body.
Anything they put out is a recommendation not a regulation.
Yes the insurance industry will go along with those recommendations., but fact remains recommendations nor regulations.

Agreed and I often disagree with ABYC recommendations, but that is based on having an alternative that is at least as good & safe and often more modern than what they recommend (think toroidal isolation transformer, ground fault breakers etc.)

When people rejected ABYC recommendations without valid reasoning, their stance will not prevail during insurance claims.

For ISO I think it is regulation.