"Lithium batteries have limited charging capabilities in temperatures below 32°F (5°C). LT models contain a heating element that uniformly heats the cells within the battery to 32°F (5°C) so that it can be charged at its full recommended current. When a charge cycle is initiated in freezing temperatures, instead of the current going into the cells, the battery management system (BMS) diverts the current to the heating element. The heating element functions until the uniform internal temperature of the battery reaches 32°F (5°C), at which time it allows the current to charge the cells. Uniform internal heating is an important feature of the LT model as many external heating blanket options currently available cannot sense the internal temperature of the cells and may not be completely effective at heating the battery throughout."

https://www.prnewswire.com/news-releases/premier-global-lithium-battery-provider-expands-innovative-low-temperature-product-line-301170741.html

__________________________________________________________________________

So this company has used the BMS to solve this problem and heat up the battery internally in cold weather first and then recharge the battery.  Recharging a Lithium Ion battery at temps below 32 degrees F. will ordinarily involve lithium plating on the anode that is a permanent situation and reduced the overall life of the battery, so this new type of BMS may solve that problem and preserve the life of the battery to its maximum value.  

Battery University has an article that notes: 

"Many battery users are unaware that consumer-grade lithium-ion batteries cannot be charged below 0°C (32°F). Although the pack appears to be charging normally, plating of metallic lithium can occur on the anode during a sub-freezing charge. This is permanent and cannot be removed with cycling. Batteries with lithium plating are more vulnerable to failure if exposed to vibration or other stressful conditions. Advanced chargers (Cadex) prevent charging Li-ion below freezing."

https://batteryuniversity.com/index.php/learn/article/charging_at_high_and_low_temperatures