In general
"The rules for power banks with more capacity than 27,000mAh differ per airline. Power banks with a capacity of more than 43,000mAh can't go with you on the plane. Sometimes, power banks with a capacity between 27,000mAh and 43,000mAh may be taken onto a plane, but only in consultation with the airline."
You could ask SW what it's rules are by click on "contact us" below and following prompts to the specific area you need.
