Hi I wanted to ask if it normal for the MPPT to display 14.2v absorption / 13.5v float at temperatures under 0Celsius? We have a LiFePO4 battery with an internal BMS so we're assuming that the BMS has done a lockout preventing charge and that the solar panels are simply using the connections to the battery as a bridge and only using solar energy as the main voltage?
Also, any advice on trying to keep the battery warm above 5Celsius? How long would it usually take for the battery to accept charge again?