The Watson Battery Adapter Plate for D-Li50 or BP-21 enables you to charge any Pentax D-Li50, Sigma BP-21, Minolta NP-400 or Samsung SLB-1674 type battery using your Watson Compact AC/DC or Duo LCD Charger.
Watson Compact AC/DC and Duo LCD Chargers feature an interchangeable battery plate system. This economical option allows you to charge many different batteries, all with one charger. Use this plate to expand your charger's compatibility or to replace a lost plate.
Supported Batteries
Pentax D-Li50, Sigma BP-21, Minolta NP-400 or Samsung SLB-1674 type