Tälläinen latausohje kylmään löytyi ko. valmistajan sivuilta:
Charging Temperature LiFePO4 batteries can be safely charged 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 before using or charging the battery. Please refer to your specific battery’s Data Sheet for the BMS high temperature cut-off and reconnect values.
Joka paikassa tosiaan toistetaan että pakkasessa ei saa ladata, mutta tuo olisikin mielenkiintoista, jos pitää paikkansa, että saisi ladata pikkuvirroilla. Voi olla tietty että kyseinen valmistaja on tehnyt jotain temppuja jotta mahdollista.