0 degree charging victron mppt

[1 Cup]

Electric

Just gone outside +3 degrees battery's full can I just put victron mppt into maintenance / off unill need at end of month !.

Is there something else apart from b2b and inverter 2 turn off marster switch is already off only diesel heater connected. To bat

Do I need to cover solar pannel while mppt is off. ..?

 

[wildebus]

Electric

Just gone outside +3 degrees battery's full can I just put victron mppt into maintenance / off unill need at end of month !.

Could do. Does your BMS not stop the charge when cold anyway though?

Is there something else apart from b2b and inverter 2 turn off marster switch is already off only diesel heater connected. To bat

Probably not.

Do I need to cover solar pannel while mppt is off. ..?

Wouldn't think so.

 

[1 Cup]

Could do. Does your BMS not stop the charge when cold anyway though?

Probably not.


Wouldn't think so.

No its the first of the lipos ( 1820 cells relion 100ah ) ! BMS Stops overcharging and I think it stops at low voltage i think but not sure as ive never had to restart it

Got it sh so no instructions.

 

[Admin]

You can use a Victron Smart Battery Sense to pass battery temperature data to the Victron Smar solar and that can then disable charging at low temperatures.

 

[Okta]

No its the first of the lipos ( 1820 cells relion 100ah ) ! BMS Stops overcharging and I think it stops at low voltage i think but not sure as ive never had to restart it

Got it sh so no instructions.

Relion can be charged below freezing but at a reduced rate, I doubt solar will be pushing out very much at this time of year. This is from the Relion charging instructions:
“Charging Temperature.
LiFePO4 batteries can safely charge between -20°C to 55°C (-4°F to 131°F). However, at temperatures below 0°C (32°F) the charge current must be reduced, until the temperature is >0ºC (32ºF), as follows:
1. 0°C to -10°C (32°F to 14°F) charge at 0.1C (10% of the battery capacity)
2. -10°C to -20°C (14°F to -4°F) charge at 0.05C (5% of the battery capacity)
LiFePO4 batteries do not require temperature compensation for voltage when charging at hot or cold temperatures. All Relion LiFePO4 come with a BMS that protects the battery from over-temperature. If the BMS disconnects due to high temperature, wait until the temperature reduces and the BMS reconnects the battery circuit before using or charging the battery. Please refer to your battery data sheet for the BMS high temperature cut-off value.”