Re: Cells (modules) are dying.
Thanks Jerry, Gives me hope. I just might try that. I have a couple that are below 2, as well. First it was the #6 module, then #5 went, and #12 went about the same time as #5. Do you have the link
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Peter Knowlton
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#32715
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Re: Cells (modules) are dying.
I will try to bring them back. I had thought from what I read, and what some have told me, that since the voltage for each battery was nearly identical there was no need to balance them. Looks like
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Peter Knowlton
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#32714
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Re: Cells (modules) are dying.
Peter,
I had a bad bms on my house solar bank that resulted in something like you had. In my experience the ones on the positive end (number 15 and 16 go first. I had one at zero and another at
By
shredderf16
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#32713
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Re: Cells (modules) are dying.
Sounds like you didn’t balance them or charge them after you received them? Voltage is almost meaningless with LFP. You can have one cell at 25% SOC and another at 85% and they with both read 3.2
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Matt Foley
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#32712
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Cells (modules) are dying.
So, I have an AC-34 HPEVS motor and a Curtis F6a controller. 48 volts. Eve LiFePo4 batteries. 3.2v and 280ah each. 16 of them. Have had them for three years in storage at 55-65 degrees. They were all
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Peter Knowlton
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#32711
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Re: Anyone with ME1616 experience? planning to run one at 48VDC, what is the actual kW available? 6kW continuous?
Hello Charlie,
On my catamaran, I went to 96vdc, not center tapped.
If you are still trying to decide whether to stay 48vdc or go to 96vdc,
there is another important consideration to keep in mind:
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Jerome Mouton
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#32710
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Re: Anyone with ME1616 experience? planning to run one at 48VDC, what is the actual kW available? 6kW continuous?
It's not common to see a +48v/-48v bipolar power supply. But, charging a +96v/0v is no different than charging a +48v/-48v system. Isolated components (those that do not bond one rail or the other to
By
Randy Cain
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#32709
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Re: Anyone with ME1616 experience? planning to run one at 48VDC, what is the actual kW available? 6kW continuous?
For you guys building the 96vdc setups:
Is everyone considering doing a center tapped 96vdc/48vdc battery setup? Any other solution with a large 96v bank aboard seems difficult to charge with
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Charlie
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#32708
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Re: Anyone with ME1616 experience? planning to run one at 48VDC, what is the actual kW available? 6kW continuous?
Yes, Volvo 120S. I'm hoping to get to it this winter.
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Randy Cain
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#32707
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Re: Anyone with ME1616 experience? planning to run one at 48VDC, what is the actual kW available? 6kW continuous?
I would be interested in seeing photos of sketches of the installation directly to the saildrive. Seems like this whole approachwould be potential install with a lot of interest. there a re lot of
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Bodsky, Marcel
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#32706
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Re: Anyone with ME1616 experience? planning to run one at 48VDC, what is the actual kW available? 6kW continuous?
I removed the transmissions and am having a jackshaft made so that the motor's shafts are pointed up. I haven't built those yet though. My plan includes keeping the jackshaft bearings in an oil
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Randy Cain
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#32705
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Re: Anyone with ME1616 experience? planning to run one at 48VDC, what is the actual kW available? 6kW continuous?
are you mating the ME1616s to the saildrives and keeping the transmission for FWD REV etc or going straight to the drive leg?
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Charlie
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#32704
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Re: Anyone with ME1616 experience? planning to run one at 48VDC, what is the actual kW available? 6kW continuous?
Ahhh make much more sense when i thnk about it like 240 and 120VAC. L1 L2 and N. then a case ground for 48vdc breakers etc?
THANK YOU!
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Charlie
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#32703
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Re: Anyone with ME1616 experience? planning to run one at 48VDC, what is the actual kW available? 6kW continuous?
I installed one, but my boat is still on the hard, so I don't know how it
will perform yet I bought a kit from thunderstruct_ev. They configured it
for 96v. I bench tested it before putting in my boat
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Circe Strauss
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#32702
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Re: Anyone with ME1616 experience? planning to run one at 48VDC, what is the actual kW available? 6kW continuous?
Just a FB page for now: https://www.facebook.com/MVMaritima
Bipolar DC power is common in many devices that have audio power amplifiers. The important specifics is that the components that attach are
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Randy Cain
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#32701
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Re: Anyone with ME1616 experience? planning to run one at 48VDC, what is the actual kW available? 6kW continuous?
Wow, Randy do you have a blog on this build?
Sounds like its going to move with authority!
I read up a bit but the internet quickly divulges into naysayers on the hot rail tapping threads. I would
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Charlie
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#32700
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Re: Anyone with ME1616 experience? planning to run one at 48VDC, what is the actual kW available? 6kW continuous?
ok so Dan I gave your Electric over hydraulic idea more thought and it could be a really good way to tip toe into going electric on this boat.? I like the small steps. I have been the 6month haulout
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Charlie
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#32699
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Re: Anyone with ME1616 experience? planning to run one at 48VDC, what is the actual kW available? 6kW continuous?
I'm building a 96v as +48 & -48 dual hot rail system by tapping the middle of the battery for the safety ground. The boat is a converted Endeavour 34 catamaran and will have dual ME1616 motors on
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Randy Cain
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#32698
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Re: Anyone with ME1616 experience? planning to run one at 48VDC, what is the actual kW available? 6kW continuous?
good to know! Thanks Bob.
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Charlie
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#32697
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Re: Anyone with ME1616 experience? planning to run one at 48VDC, what is the actual kW available? 6kW continuous?
48VDC is not as dangerous as 96VDC.
There's obviously a lot more to it than that, but that's a simple summarization.
Example: you can put your dry hands on 48VDC with little effect (one hand
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bobkart
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#32696
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