12/200 alternator shut off

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moiuk asked Jun 30, '19

12/200 alternator shut off

Trying to get my head around how the 12/200 operates and would appreciate any help to educate me ;)

The 12/200 datasheet shows that the 12/200 has a shutoff voltage of 11V which makes sense, but I am missing something in my understanding of how it works to stop overcharging of a lithium.

I also understand the purpose of the fuse to set the current limiting from the alternator (not sure how it achieves this though) - but again, am missing something to see how/when it shuts off the charge to the lithiums (and uses the lead-acid to dump into).

Anybody able to fill the missing gaps for me ?

BMS alternator

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Paul B commented · Jul 01, 2019 at 01:56 AM

Hi Moiuk

Please supply

Some more information needed, like a product part number and also a diagram as to how you have connected the unit. to your system.

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Answer 1 · 2019-07-05T22:27:20Z

Daniël Boekel (Victron Energy Staff) answered · Jul 05, 2019 at 10:27 PM

Hi @moiuk

What product are you talking about? and how do you want to use it?

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luis-gomezcala commented · Nov 16, 2021 at 01:58 PM

Hi Daniel,

I have a similar issue. I have a 12/200 BMS on my Victron lithium batteries. I don't really use the alternator for charging as the solar fulfills most of my power needs. However, now in winter I noticed the alternator charging seems to be switching on and off after a few minutes. If I turn off the engine and start again the charging is back to normal but after a few minutes it reverts to switching on and off continually. Any ideas of the issue? Thanks in advance

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