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01-31-2019, 06:31 PM | #11 |
MOD of all BS!
Join Date: Sep 2011
Location: Florida
Posts: 17,477
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Re: BMV-700 Battery Management Meter Install!!
Lol! Peukert's law was just like Newtons or anyone else who proved their hypothesis (mathematically, scientifically, etc.) and was labeled a law in their honor. PL states approximately the change in capacity of rechargeable lead acid batteries for different rates of their discharge. Basically he formulated the relationship between discharge increases and available capacity decreases.
Cp = Ik t Cp is the capacity at a one-ampere discharge rate, which must be expressed in ampere hours, I is the actual discharge current (i.e. current drawn from a load) in amperes, t is the actual time to discharge the battery, which must be expressed in hours. k is the Peukert constant (dimensionless). See examples and details here: https://en.wikipedia.org/wiki/Peukert%27s_law |
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01-31-2019, 06:39 PM | #12 | |
MOD of all BS!
Join Date: Sep 2011
Location: Florida
Posts: 17,477
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Re: BMV-700 Battery Management Meter Install!!
Quote:
Honestly, for the value of what it yields, including its accuracy, it is one of the best bangs for my buck on my carts and equipment at work we have it on fork trucks, carts, high lifts, etc.... |
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01-31-2019, 06:43 PM | #13 |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: BMV-700 Battery Management Meter Install!!
Yeah, but You need to calculate k for the actual battery as in this section of the manual you made me read
https://www.victronenergy.com/upload...IT.pdf#page=35That is what I calculated for the T-875, that values goes in this section of the setup (parameter #5): https://www.victronenergy.com/upload...IT.pdf#page=25 If You have a different battery it needs to be calculated, lithium probably work with the default of 1.05. |
01-31-2019, 06:47 PM | #14 | |
MOD of all BS!
Join Date: Sep 2011
Location: Florida
Posts: 17,477
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Re: BMV-700 Battery Management Meter Install!!
Quote:
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01-31-2019, 09:26 PM | #15 | |
Getting Wild
Join Date: Jul 2018
Posts: 81
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Re: BMV-700 Battery Management Meter Install!!
Quote:
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01-31-2019, 10:05 PM | #16 |
MOD of all BS!
Join Date: Sep 2011
Location: Florida
Posts: 17,477
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Re: BMV-700 Battery Management Meter Install!!
Here is a link https://www.victronenergy.com/suppor...loads/software to the calculator for anyone who wants to make their own PL Exponent calculations....
It is about 3/4's down the page.... |
02-01-2019, 03:38 AM | #17 |
Gone Wild
Join Date: Jan 2017
Location: Queensland Australia
Posts: 1,332
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Re: BMV-700 Battery Management Meter Install!!
Very interesting. I am away at the moment living under canvas at the Bathurst 12-hour car races. I will look at all this when I get back home.
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02-01-2019, 07:26 AM | #18 |
Getting Wild
Join Date: Jul 2018
Posts: 81
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Re: BMV-700 Battery Management Meter Install!!
I envy you. I love the supercars. I really want to go see the 1000 one day! I also want to see an F1 race as well. Are you at the top of the mountain?
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02-01-2019, 06:12 PM | #19 |
Gone Wild
Join Date: Jan 2017
Location: Queensland Australia
Posts: 1,332
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Re: BMV-700 Battery Management Meter Install!!
We are camped at the bottom in the Paddock campground. We are going up to the top this afternoon for the qualifying. I have been coming to the mountain since 1963 (for what became the 1000). I like endurance racing and the 1000 has just become a long sprint so I prefer the 12-hour or 24-hour races now. I live in Melbourne so I go to the Australian F1 race each year also.
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02-01-2019, 06:24 PM | #20 | |
Gone Wild
Join Date: Jan 2017
Location: Queensland Australia
Posts: 1,332
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Re: BMV-700 Battery Management Meter Install!!
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