Patent ID: 8183830
Filing Date: 2012-05-22
Classification: H02J

Abstract:
1. An adjustable charger for compatibly charging at least first and second rechargeable battery, comprising: a charger housing having a top charging side and a retention cavity indently formed on said top side of said charger housing; and an adjustable charging arrangement, which comprises: an upper charging platform formed on said top charging side of said charger housing, wherein said upper charging platform has first charging terminal and contains at least first charging slot for fittedly and adjustably receiving one of said first rechargeable and said second rechargeable battery in said first charging slot, wherein said first charging terminal is for electrically connecting with at least one battery terminal of said corresponding rechargeable battery; and a lower charging platform formed on said top charging side of said charger housing at a position overlappedly underneath said upper charging platform, wherein said lower charging platform has second charging terminal and contains at least second charging slot for fittedly and adjustably receiving another of said first and said second rechargeable battery in said second charging slot, wherein said second charging terminal is for electrically connecting with at least one battery terminal of said corresponding rechargeable battery; and a charging circuitry disposed in said charging housing to electrically connect with said first and said second charging terminals, wherein said first and said second rechargeable battery are fittedly and detachably disposed in said first and said second charging slots for being simultaneously or individually recharged, wherein said first and said second charging slots are formed within said retention cavity for fittedly yet adjustably receiving said first rechargeable battery and said second rechargeable battery within said first and said second charging slots respectively, wherein said adjustable charging arrangement further comprises a retention arrangement formed on two inner sidewalls of said retention cavity for retaining said first rechargeable battery within said first charging slot without falling onto said lower charging platform, wherein said retention arrangement contains at least first and second retention surfaces inwardly extended at said first and second sidewall of said retention cavity wherein two side end portions of said first rechargeable battery are arranged to be placed onto said two retention surfaces respectively for being held in position within said first charging slot and without falling onto said lower charging platform, wherein a length of an upper portion of said retention cavity is longer than a length of an lower portion of said retention cavity so as to form a first shoulder between said upper portion and said lower portion of said retention cavity at said first sidewall thereof, wherein said first retention surface is formed as an upper surface of said first shoulder for supporting said corresponding end portion of said first rechargeable battery, wherein said upper charging platform further comprises an adjusting member slidably mounted at said top charging side of said charger housing to slidably adjust a size of said first charging slot for fittedly receiving said first rechargeable battery, wherein said adjusting member is slidably mounted on said top charging side of said charger housing in such a manner that said adjusting member is capable of slidably displacing between an idle position and a charging position, wherein in said idle position, said adjusting member is inwardly slid to reduce a size of said first charging slot to its minimum and to minimize an overall size of said adjustable charger, wherein in said charging position, said adjusting member is outwardly slid on said top charging side of said charger housing to increase a size of said first charging slot for fittedly receiving said corresponding first rechargeable battery, and to form a second shoulder of said retention cavity, wherein said second retention surface is formed as an upper surface of said second shoulder for supporting said corresponding end portion of said first rechargeable battery.