Getting BMS system out of protection mode

I'm in a yard period and the marina lost power. The batteries were depleted so the BMS has gone into protection mode. Its my understanding that the batteries have the be charged to a point where the system is at a safe voltage level before the system comes out of protection mode.

At the present time if I flip the shore breaker on, the system powers up for approximately 1 minute, then all 4 of the Skyllas go into failure mode and the system shuts down.

However as the Skylla chargers are part of the system - I need to get the system running so the Skyllas will start charging the batts, so in a catch 22.

I'm hoping there is a system reset, but I can't find anything in any of the manuals or on any forum for a workaround.

Any advice greatly appreciated

Kevin

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Alexandra ♦ commented · Nov 23, 2023 at 02:33 PM

@kevin.tear.

It would be helpful to know what battery so we can help with the BMS...

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kevintearocean Alexandra ♦ commented · Nov 23, 2023 at 02:58 PM

Thanks @Alexandra - info on the system

Main service batteries

12 x Victron Energy Lithium-Ion 24V/180Ah

BMS:

2 x Lynx ION BMS 1000A

Chargers:

4 x Victron Energy Skylla-I 24V/100A

Any advice greatly appreciated

Kevin

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Alexandra ♦ kevintearocean commented · Nov 23, 2023 at 03:10 PM

@kevin.tear

Is the led flashing at all? I portant to know how dead the system is.

Has this procedure not worked?

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kevintearocean Alexandra ♦ commented · Nov 23, 2023 at 03:29 PM

@Alexandra

I'm not on the boat right now, but system went dead overnight so batts are depleted. From memory. When turning on the shore breaker, the BMS LED is flashing and the Skyllar chargers go into bulk charge for approximately 1 minute, the the system goes dead with no lights.

I'll give the exact sequence as soon as I get back to the boat.

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Alexandra ♦ kevintearocean commented · Nov 23, 2023 at 03:32 PM

Since the system is quite dead it may be best to disconnect loads. Before trying to get the system to recover again. And maybe set a slightly high SOC for cut off.

Thank @Stefanie (Victron Energy Staff) I decided to check them against each other and drowned myself. In the information. I should have checked before posting. My apologies @kevin.tear

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