The Pearstone Battery Adapter Plate for NP-40 adapts Pearstone and Fuji NP-40 batteries for use on Pearstone Compact and Duo Chargers. This economic option allows you to charge many different batteries, all with one charger. Designed for the Pearstone and Fuji NP-40 battery Adapter plate for Pearstone Compact and Duo Chargers 1-Year Limited Warranty