Amnergy New Battery For Panasonic Toughbook CF-19 CF19 Cf-VZSU28 CF-VZSU48 CF-VZSU48U CF-VZSU505.2Ah/56Wh 6 Cells Amnergy Brand Battery Is Designed Using the Best Cells and Latest Safety Features to Work as a Perfect Replacment for the Original Battery. Guaranteed to Meet or Exceed Original Specifications. Premium Quality, 100% OEM Compatible. Brand New, Protective Retail Packaging, Each Product is Sealed with Anti-Static Shield Sleeve. Lithium Ion (Li- ion) Battery, Rechargable with No Memory Effect.