?? 100% Battery Compatiblity ? Op401 For Ryobi Battery Charger 100% Compatible With Ryobi 40V Lithium Battery Op4030 Op40401 Op4040A Op1020A Zrop4026 Op40200 Op4060A Op40201 Op40601 Op40501 Op4015 Op4075A Op4050A Op4026A Op4050 Op40301 Op4026 Op4040 Op40602 Op4020A Op4060 Op40601 Op4026,Etc | | ?? Led Indicator Monitor Battery Charging Status ? Op401 Charger For Ryobi With Indicator Lights To Show The Battery Status. Built-In Charger Diagnostic Program Checks Batteries With Every Charge To Optimizes The Battery Life And Performance. | | ?? Op401 Li-Ion Battery Charger Replacement ? This Item For Ryobi 40V Lithium Battery Charger With 3 Hours Or Less To Charge. The Charging Operating Temperature Of This Op401 Charger Is 23?- 104? . This Charger Is Compact And Wall-Mountable For Convenient Storage, Keep Your Batteries Work-Ready All Season Long. | | ?? Advanced Heat Dissipation ? Bulit-In Cooling System With Vents On The Three Sides Circulate Air Across The Batteries To.