Talk:Ion Battery/@comment-44520277-20201024215816

"holds five times as much Energy, at the cost of taking five times longer to charge."

This is poorly written. I can't tell if it's saying it takes 5x as long per unit of energy or if takes 5x as long to go from 0% to 100% charged. If it's the latter, then why describe this as a "cost?" I can't tell if it was written by an innumerate 12 year-old or if there's actually a cost associated with this.