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DELTAPOWER ENG avatar image
DELTAPOWER ENG asked

Victron MultiPlus-II 48/5000/70-48 keeps shutting down on changeover from bulk charging to absorption mode, help?

Hie,


I have a Multiplus 2 connected to a Victron battery (70Ah). The system shuts down after bulk charging as soon as it is about to go into absorption.


Please help

Multiplus-IIbattery charging
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2 Answers
Daniël Boekel (Victron Energy Staff) avatar image
Daniël Boekel (Victron Energy Staff) answered ·

Hi @DELTAPOWER

I think this is due to your battery being much to small for the system, is this the 'Mr. Crossley' site?

I see big spikes in DC voltage, and high DC-ripple alarms.

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DELTAPOWER ENG avatar image DELTAPOWER ENG commented ·

Thanks for your prompt reply.


Was wondering though; the batteries are 4.8kWh 48V, so maybe my capacity is 100Ah instead of 70Ah as previously mentioned.


Is this still too small for a 5kVA Multiplus II?


If so what is the minimum battery bank capacity for the 5kVA system?

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Daniël Boekel (Victron Energy Staff) avatar image
Daniël Boekel (Victron Energy Staff) answered ·

And another remark: Please check your battery wiring for bad connections, you have a battery voltage that fluctuates too much. Hence the 'high DC-ripple' warnings.

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