FORT LAUDERDALE, Fla. – Big banks are entering the business of prepaid debit cards, as more Americans turn to reloadable plastic as a handy alternative to checking accounts, check-cashing stores and other financial options.

Giant JPMorgan Chase is especially aggressive. In late June, it launched Liquid, a card that lets users load and withdraw money at Chase’s extensive branch and ATM network at no charge.

Some analysts call Liquid a “game changer,” because most prepaid cards charge for loading, withdrawal and other services that Chase is offering free at its network.