question

David avatar image
David asked

Multiplus and Low Temp Charging Control

I can't see anyway to do the following, but as Lithium Batteries get more and more popular and the Multiplus range grows, surely this is going to get more and more a need?


When the battery temp drops below around 5C, you don't want your Lithium Batteries to be charging. But how do you prevent that whilst still being able to use them, AND be able to use the 240V Supply when hooked up?

Is there any way to disable the Charger function while still keeping the 240V input active for passthru and Power Assist when using typical LiFePO4 Batteries and not adding extra BMS systems. (I would have thought that would/should have been possible to program within the Multiplus?)


MultiPlus Quattro Inverter ChargerLithium Batterytemperature
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1 Answer
jeroend avatar image
jeroend answered ·

In a LiFePO4 setup with a Multiplus, the Multiplus charges when it is allowed to charge by the Battery Management System. Depending on the BMS used this includes a safety to not allow low temperature charging of the cells/pack (but continue to allow low temperature discharging for instance as those limits are usually not the same for LiFePO4 cells/pack). The Multiplus itself is quite capable of limiting it's operation to invert or passthrough only when it is instructed to do so by the BMS (or manually through the Victron Connect app when the VE.BUS Smart Dongle is attached to the Multiplus.)

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