Nationwide retailer RadioShack has expanded its recycling program for rechargeable batteries and smartphones to its Hawaii and Puerto Rico stores.

Consumers can now bring rechargeable batteries and cellular phones to any RadioShack for recycling, with no purchase necessary.

The store has had a 20-year partnership with Call2Recycle, a nonprofit program, to collect, transport and rechargeable batteries, and is now Call2Recycle’s highest-volume retail partner, the company said, in a statement.

 “Our partnership with Call2Recycle has helped divert over 7 million pounds of these items from landfills and ensure that they are properly recycled,” said Joe Magnacca, CEO of RadioShack, in a statement.

Call2Recycle has collected more than 85 million pounds of batteries and cell phones since its inception by five battery manufacturers in 1994.