US20020063550A1 - Battery charger capable of charging different size of batteries - Google Patents

Battery charger capable of charging different size of batteries Download PDF

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Publication number
US20020063550A1
US20020063550A1 US09824464 US82446401A US2002063550A1 US 20020063550 A1 US20020063550 A1 US 20020063550A1 US 09824464 US09824464 US 09824464 US 82446401 A US82446401 A US 82446401A US 2002063550 A1 US2002063550 A1 US 2002063550A1
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Prior art keywords
battery
size
switching device
receptacle
battery charger
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
US09824464
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US6384575B1 (en )
Inventor
Chen Chen
Hsu Kuan
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Delta Electronics Inc
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Delta Electronics Inc
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0042Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
    • H02J7/0045Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging several batteries simultaneously or sequentially

Abstract

A battery charger capable of simultaneously charging at least one battery of different size is provided. The battery charger includes an upper housing, a lower housing, and at least one charging unit. The charging unit includes a battery receptacle, a switching device and a contact element. The switching device is positioned in one side of the battery receptacle and the contact element is positioned in the other side of the battery receptacle. When the switching device is switched to a first position, a first size battery would be charged and when the switching device is switched to a second position, the second size battery would be charged.

Description

    FIELD OF THE INVENTION
  • The present invention relates to a battery charger, and more particularly to a battery charger capable of charging different size of batteries. [0001]
  • BACKGROUND OF THE INVENTION
  • Many products, for example a calculator, a clock, a pager, a Walkman, an electric razor, a flashlight, a camera, etc., are widely used and operated by one or more batteries because they are portable and convenient power source. In order to reduce cost of the batteries and be environmentally friendly, a rechargeable battery is successfully developed. There are many types of commercially available batteries such as Nickel-Cadmium (Ni-Cd) batteries, Nickel Metal Hydride batteries, Lead Acid batteries and Lithium Ion batteries. [0002]
  • The standard size of battery usually has been designated as AAA, AA, C, and D. In response to the marketplace's demand, a battery charger has been developed to simultaneously charge batteries. Such battery charger has a plurality of charging units having predetermined sizes of battery receptacles for receiving specific batteries. For example, if four batteries of size AA or AAA are going to be simultaneously charged, five battery chargers having four charging units (i.e. four AAAs, three AAAs and one AA, two AAAs and two AAs, one AAA and three AAs, and four AAAs) would be manufactured, which is costly and not environmentally friendly. Furthermore, fabricating more battery chargers is necessary when more sizes of batteries and more of different sizes are designed for receiving specific batteries, which is not pleasing to the eye. [0003]
  • A battery charger has been developed to overcome the above drawbacks. FIGS. [0004] 1(a) and 1(b) show a typical battery charger capable of charging two standard batteries, e.g. AAA size and AA size, by using springs to expand and contract the length of battery receptacles. The battery charger includes a main body 11 having four sets of charging units, wherein each set of charging unit includes a battery receptacle 12, a contact element 13, an adjusting plate 14 and a slot 15. The adjusting plate 14 is connected to a spring 16 under the battery receptacle 12 and as another contact element. The anode and cathode of a battery to be charged are engaged and electrically connected with the contact element 13 and the adjusting plate 14. In normal condition, the adjusting plate 14 is positioned in one side of the battery receptacle 12 by a pulling force resulted from the spring 16. If the adjusting plate 14 is pulled in the direction distant from the positive electrode contact 13 via the slot 15, the charging unit is capable of charging an AA size battery. Although such charger could simultaneously charge different size batteries, it has the following disadvantages:
  • (1) The pulling force by the spring [0005] 16 needs to be large enough to pull the adjusting plate 14 when an AA size battery is charged, which is inconvenient; and
  • (2) The elastic fatigue of the spring [0006] 15 is common; therefore, the electric engagement of the charging unit could not be achieved.
  • Therefore, the present invention provides an improved battery charger for overcoming the problems described above. [0007]
  • SUMMARY OF THE INVENTION
  • It is an object of the present invention to provide a battery charger capable of charging a battery selected from one of a first size battery and a second size battery. [0008]
  • It is another object of the present invention to provide a battery charger capable of simultaneously charging different size batteries. [0009]
  • In accordance with one aspect of the present invention, the battery charger includes a housing and at least one charging unit. Each of the charging unit includes a battery receptacle disposed on the housing for receiving and supporting a battery selected from one of a first size battery and a second size battery, a switching device positioned in one side of the battery receptacle and has a metal strip thereon, and a contact element positioned in the other side of the battery receptacle. The first size battery would be charged when the switching device is switched to a first position and the second size battery would be charged when the switching device is switched to a second position. [0010]
  • Preferably, the housing includes an upper housing, a lower housing. [0011]
  • In accordance with another aspect of the present invention, the anode and cathode of the battery are respectively electrically connected with the metal strip and the contact element. Furthermore, the metal strip includes a first protruding pad corresponding to the first size battery and a second protruding pad corresponding to the second size battery. The switching device further includes a protuberance for facilitating adjusting the switching device by hand. [0012]
  • Preferably, the battery receptacle is a concave recess having multiple supporting surfaces. [0013]
  • Preferably, each of the first size battery and the second size battery is selected from a group consisting of size AAA battery, size AA battery, size C battery and size D battery. [0014]
  • The above objects and advantages of the present invention will become more readily apparent to those ordinarily skilled in the art after reviewing the following detailed description and accompanying drawings, in which:[0015]
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1([0016] a) is a perspective view showing a battery charger capable of charging two standard batteries according to prior art, wherein the receptacles could receive AAA batteries;
  • FIG. 1([0017] b) is a perspective view showing a battery charger capable of charging two standard batteries according to prior art, wherein portions of the adjusting plates are adjusted to receive AA batteries;
  • FIG. 2 is a perspective view showing a battery charger according to a preferred embodiment of the present invention; [0018]
  • FIG. 3 is a view showing the assembly of the battery charger in FIG. 2; [0019]
  • FIG. 4 is a perspective view showing the switching device of the battery charger in FIG. 2; [0020]
  • FIG. 5 is a view showing the assembly of the switching device in FIG. 4; [0021]
  • FIG. 6([0022] a) is a sectional view showing a first charging circuit according to a preferred embodiment of the present invention; and
  • FIG. 7([0023] a) is a sectional view showing a second charging circuit according to a preferred embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • Please refer to FIGS. 2 and 3. The structure of the charger according to the preferred embodiment of the present invention principally includes a lower housing [0024] 21, an upper housing 22, four sets of charging units and an indicating light 26. The lower housing 21 and the upper housing are plastic molded. Each set of charging unit includes a battery receptacle 23, a switching device 24 and a contact element 25. The battery receptacle 23 is designed to receive one AAA or AA battery by switching the switching device 24. In order to receive and support the battery thereon, the battery receptacle 23 is configured to be in a shape of concave recess having a first surface 231 and a second surface 232. Preferably, the first surface 231 and the second surface 232 are curved surfaces, and more preferably, multiple curved surfaces.
  • FIGS. 4 and 5 are respectively perspective and exploded views of the switching device [0025] 24 of the present invention. The switching device 24 includes a molded plastic main body 241, a protuberance 242 for facilitating adjusting the switching device 24 and a metal strip 243 on the main body 241. The metal strip 243 further includes a first protruding pad 2431 and a second protruding pad 2432. When the switching device 24 is switched to the first position, the battery receptacle 23 is capable of receiving an AA battery and the electrical engagement of the anode and cathode of the AA battery with the first protruding pad 2431 and the contact element 25 is also performed. On the other hand, when the switching device 242 is switched to the second position, the battery receiving portion 23 is capable of receiving an AAA battery and the electrical engagement of the anode and cathode of the AAA battery with the second first protruding pad 2432 and the contact element 25 is performed. Certainly, the dimensions of the receptacle 23 and the switching device 24 can be predetermined to receive other standard size batteries, such as size C battery and size D battery.
  • As foregoing description, five chargers are possible to be produced to charge four batteries of two sizes in the prior art. However, only one charger is needed to achieve the above object in the present invention. Thus, the battery charger according to the present invention is less cost and more environmentally friendly. Furthermore, the battery charger according to the present invention doesn't require the spring so as to avoid the drawback of elastic fatigue thereof. [0026]
  • FIGS. [0027] 6(a) and (b) illustrate the charging circuits of the battery charger according to the preferred embodiment of the present invention. Referring to FIG. 6(a), the first charging circuit includes a switching device 74, a contact element 75, a resistor RI and a comparator 76. The resistor RI and the comparator 76 are positioned on a circuit board (not shown). The switching device 74 is electrically connected to the circuit board. In this first charging circuit, the switching device 74 is switched to engage an AAA battery supported in the battery receptacle 75 of the battery charger. When a power source 7 outside the battery charger is applied, the battery charger starts to charge the AAA battery. Meanwhile, a first charging current I1 passes through the first charging circuit. When the result of I1 multiples R1 is equal to a predetermined first reference voltage V1, the comparator 76 delivers a voltage signal to a control circuit (not shown) on the circuit board to stop charging after a predetermined period. Referring to FIG. 6(b), the second charging circuit includes a switching device 74, a contact element 75, a resistor R2 and a comparator 76. The resistor R2 and the comparator 76 are positioned on a circuit board (not shown). The switching device 74 is electrically connected to the circuit board. In this first charging circuit, the switching device 74 is switched to engage an AA battery supported in the battery receptacle 75 of the battery charger. When a power source 7 outside the battery charger is applied, the battery charger starts to charge the AA battery. Meanwhile, a first charging current 12 passes through the first charging circuit. When the result of 12 multiples R2 is equal to a predetermined first reference voltage V2, the comparator 76 delivers a voltage signal to a control circuit (not shown) on the circuit board to stop charging after a predetermined period.
  • While the invention has been described in terms of what are presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structure. [0028]

Claims (9)

    What is claimed is:
  1. 1. A battery charger having a housing and at least one charging unit, said charging unit comprising:
    a battery receptacle disposed on said housing for receiving and supporting a battery selected from one of a first size battery and a second size battery;
    a switching device positioned in one side of said battery receptacle and having a metal strip thereon; and
    a contact element positioned in the other side of said battery receptacle, wherein said first size battery is charged when said switching device is switched to a first position and said second size battery is charged when said switching device is switched to a second position.
  2. 2. The battery charger according to claim 1, wherein said housing comprises an upper housing and a lower housing.
  3. 3. The battery charger according to claim 1, wherein the anode and cathode of said battery are respectively electrically connected with said metal strip and said contact element.
  4. 4. The battery charger according to claim 3, wherein said metal strip further comprises a first protruding pad corresponding to said first size battery.
  5. 5. The battery charger according to claim 3, wherein said metal strip further comprises a second protruding pad corresponding to said second size battery.
  6. 6. The battery charger according to claim 1, wherein said switching device further comprises a protuberance for facilitating adjusting said switching device by hand.
  7. 7. The battery charger according to claim 1, wherein said battery receptacle is a concave recess having multiple supporting surfaces.
  8. 8. The battery charger according to claim 1, wherein each of said first size battery and said second size battery is selected from a group consisting of size AAA battery, size AA battery, size C battery and size D battery.
  9. 9. A battery charger having an upper housing, a lower housing and at least one charging unit, said charging unit comprising:
    a battery receptacle disposed on said upper housing for receiving and supporting a battery selected from one of a first size battery and a second size battery;
    a switching device positioned in one side of said battery receptacle and having a metal strip thereon, said metal strip further comprising a first protruding pad corresponding to said first size battery; and
    a contact element positioned in the other side of said battery receptacle, wherein said first size battery is charged when said switching device is switched to a first position and said second size battery is charged when said switching device is switched to a second position.
US09824464 2000-11-28 2001-04-02 Battery charger capable of charging different size of batteries Active US6384575B1 (en)

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TW89125259A 2000-11-28
TW89125259 2000-11-28
TW89125259 2000-11-28

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US6384575B1 US6384575B1 (en) 2002-05-07
US20020063550A1 true true US20020063550A1 (en) 2002-05-30

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Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030178971A1 (en) * 2002-03-19 2003-09-25 Sun Yu Battery charger amusement device
US20040051501A1 (en) * 2002-03-19 2004-03-18 Sun Yu Battery charger amusement device
US20040145344A1 (en) * 2001-10-19 2004-07-29 Bushong William C. Method and apparatus for regulating charging of electrochemical cells
WO2005018070A1 (en) * 2003-08-15 2005-02-24 Rovcal, Inc. Method and apparatus for charging electrochemical cells
US20050046393A1 (en) * 2003-08-29 2005-03-03 Toshiki Nakasho Battery charger
US20060043928A1 (en) * 2004-08-31 2006-03-02 Toshiki Nakasho Battery charger
US20060071641A1 (en) * 2004-09-30 2006-04-06 Ward Grahame P Collapsible battery charger
US20060232243A1 (en) * 2005-04-13 2006-10-19 Dabdoub David A Electrical appliance for use with batteries
US20070090787A1 (en) * 2005-10-19 2007-04-26 Sun Yu Amusement apparatus operative as a dynamo battery charger
US20070103114A1 (en) * 2005-11-08 2007-05-10 Eveready Battery Company, Inc. Enhanced portable battery powered electrical appliance
US20080084214A1 (en) * 2006-10-05 2008-04-10 Hoffman Peter F Battery charger
US20080084183A1 (en) * 2006-10-05 2008-04-10 Eveready Battery Company Battery Charger User Interface
US20080143294A1 (en) * 2006-12-15 2008-06-19 Motorola, Inc. Universal battery charger with adjustable pocket
US20100127661A1 (en) * 2008-11-21 2010-05-27 Stocking Mark A Patient identification and labeling system incorporated into a portable bin and exhibiting electrical charge architecture for recharging an electronic device plugged into the bin architecture once the bin is set upon a pedestal charging base
US20110063119A1 (en) * 2009-09-17 2011-03-17 Symbol Technologies, Inc. User interface for rechargeable batteries
US20110181242A1 (en) * 2008-09-29 2011-07-28 Wilson Lee Multi-chemistry battery charging system and method of identifying and improved charging technique for primary and secondary dry-cell batteries
WO2012000275A1 (en) * 2010-07-01 2012-01-05 中兴通讯股份有限公司 Battery for communication terminals
US20140042958A1 (en) * 2012-08-10 2014-02-13 Wistron Corporation Base and electronic assembly having the same
USD735128S1 (en) 2013-09-12 2015-07-28 The Gillette Company Battery charger
USD808899S1 (en) * 2016-03-14 2018-01-30 Wenjie Li Charger
USD808900S1 (en) * 2016-03-14 2018-01-30 Wenjie Li Charger
USD810012S1 (en) * 2016-06-15 2018-02-13 Wenjie Li Charger
USD816023S1 (en) * 2016-10-12 2018-04-24 Duracell U.S. Operations, Inc. Battery charger
USD817871S1 (en) * 2016-03-14 2018-05-15 Wenjie Li Charger

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US6696816B2 (en) * 2002-04-12 2004-02-24 Hon Hai Precision Ind. Co., Ltd. Battery charger
US7023175B2 (en) * 2004-06-09 2006-04-04 International Components Corporation Battery cell size detection method
CN2770109Y (en) * 2004-12-24 2006-04-05 鸿富锦精密工业(深圳)有限公司 battery charger
US20070069689A1 (en) * 2005-09-27 2007-03-29 Shum King M Battery charger
US7626357B2 (en) * 2007-02-07 2009-12-01 Eveready Battery Co., Inc. Battery charger having a spring loaded plunger contact mechanism
CN101562346B (en) * 2008-04-18 2012-07-25 奇美通讯股份有限公司 Battery charging equipment
DE102008054639A1 (en) * 2008-12-15 2010-06-17 Robert Bosch Gmbh Energy transmission device
US8575899B2 (en) 2009-07-16 2013-11-05 Schumacher Electric Corporation Battery charger with automatic voltage detection
US7884573B1 (en) 2009-11-19 2011-02-08 Microsoft Corporation Flexible size and orientation battery system
US8633674B2 (en) * 2010-01-07 2014-01-21 Ada (Hong Kong) Limited Universal charger
GB2494187B (en) 2011-09-02 2016-02-17 Pag Ltd Battery management system, method and battery
US9653719B2 (en) 2013-10-04 2017-05-16 Pag Ltd. Battery
USD736707S1 (en) * 2014-03-21 2015-08-18 Symbol Technologies, Llc Charger interface

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US6014010A (en) * 1998-04-22 2000-01-11 Yao; Li-Ho Charger compatible with different-sized rechargeable batteries of mobile telephones

Cited By (49)

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US20040145344A1 (en) * 2001-10-19 2004-07-29 Bushong William C. Method and apparatus for regulating charging of electrochemical cells
US7859220B2 (en) 2001-10-19 2010-12-28 Rovcal, Inc. Method and apparatus for charging electrochemical cells
US20050088140A1 (en) * 2001-10-19 2005-04-28 Bushong William C. Method and apparatus for charging electrochemical cells
US7030592B2 (en) * 2002-03-19 2006-04-18 Sun Yu Battery charger amusement device
US20040051501A1 (en) * 2002-03-19 2004-03-18 Sun Yu Battery charger amusement device
US7259541B2 (en) 2002-03-19 2007-08-21 Sun Yu Battery charger amusement device
US6995542B2 (en) * 2002-03-19 2006-02-07 Sun Yu Battery charger amusement device
US20060226809A1 (en) * 2002-03-19 2006-10-12 Sun Yu Battery charger amusement device
US20030178971A1 (en) * 2002-03-19 2003-09-25 Sun Yu Battery charger amusement device
USRE42469E1 (en) 2002-03-19 2011-06-21 Zen Design Group Battery charger amusement device
WO2005018070A1 (en) * 2003-08-15 2005-02-24 Rovcal, Inc. Method and apparatus for charging electrochemical cells
US20050046393A1 (en) * 2003-08-29 2005-03-03 Toshiki Nakasho Battery charger
GB2418547A (en) * 2004-08-31 2006-03-29 Sanyo Electric Co Battery charger for various size batteries with temperature and battery size acknowledgement.
US20060043928A1 (en) * 2004-08-31 2006-03-02 Toshiki Nakasho Battery charger
GB2418547B (en) * 2004-08-31 2007-12-05 Sanyo Electric Co Battery charger
US7187156B2 (en) 2004-08-31 2007-03-06 Sanyo Electric Co., Ltd. Battery charger
US20060071641A1 (en) * 2004-09-30 2006-04-06 Ward Grahame P Collapsible battery charger
WO2006039539A3 (en) * 2004-09-30 2006-08-24 Eveready Battery Inc Collapsible battery charger
WO2006039539A2 (en) * 2004-09-30 2006-04-13 Eveready Battery Company, Inc Collapsible battery charger
US20060232243A1 (en) * 2005-04-13 2006-10-19 Dabdoub David A Electrical appliance for use with batteries
WO2006113079A1 (en) * 2005-04-13 2006-10-26 Eveready Battery Company, Inc. Electrical appliance for use with batteries
US20070090787A1 (en) * 2005-10-19 2007-04-26 Sun Yu Amusement apparatus operative as a dynamo battery charger
US7679320B2 (en) 2005-10-19 2010-03-16 Zen Design Group, Ltd. Amusement apparatus operative as a dynamo battery charger
US8044634B2 (en) 2005-11-08 2011-10-25 Eveready Battery Company, Inc. Enhanced portable battery powered electrical appliance
US20070103114A1 (en) * 2005-11-08 2007-05-10 Eveready Battery Company, Inc. Enhanced portable battery powered electrical appliance
US7688029B2 (en) 2005-11-08 2010-03-30 Eveready Battery Company, Inc. Portable battery powered appliance and method of operation
US20100142195A1 (en) * 2005-11-08 2010-06-10 Eveready Battery Company, Inc. Enhanced Portable Battery Powered Electrical Appliance
US8648567B2 (en) 2005-11-08 2014-02-11 Eveready Battery Co., Inc. Enhanced portable battery powered electrical appliance
US20080084214A1 (en) * 2006-10-05 2008-04-10 Hoffman Peter F Battery charger
US7750598B2 (en) 2006-10-05 2010-07-06 Eveready Battery Company, Inc. Battery charger user interface
US7764045B2 (en) 2006-10-05 2010-07-27 Eveready Battery Company, Inc. Battery charger
US20080084183A1 (en) * 2006-10-05 2008-04-10 Eveready Battery Company Battery Charger User Interface
US20080143294A1 (en) * 2006-12-15 2008-06-19 Motorola, Inc. Universal battery charger with adjustable pocket
US8067922B2 (en) * 2006-12-15 2011-11-29 Motorola Mobility, Inc. Universal battery charger with adjustable pocket
US9184603B2 (en) * 2008-09-29 2015-11-10 Wilson Lee Multi-chemistry battery charging system and method of identifying and improved charging technique for primary and secondary dry-cell batteries
US20110181242A1 (en) * 2008-09-29 2011-07-28 Wilson Lee Multi-chemistry battery charging system and method of identifying and improved charging technique for primary and secondary dry-cell batteries
US20100127661A1 (en) * 2008-11-21 2010-05-27 Stocking Mark A Patient identification and labeling system incorporated into a portable bin and exhibiting electrical charge architecture for recharging an electronic device plugged into the bin architecture once the bin is set upon a pedestal charging base
US8217622B2 (en) 2008-11-21 2012-07-10 Stocking Mark A Patient identification and labeling system incorporated into a portable bin and exhibiting electrical charge architecture for recharging an electronic device plugged into the bin architecture once the bin is set upon a pedestal charging base
US8552877B2 (en) * 2009-09-17 2013-10-08 Symbol Technologies, Inc. User interface for rechargeable batteries
US20110063119A1 (en) * 2009-09-17 2011-03-17 Symbol Technologies, Inc. User interface for rechargeable batteries
WO2012000275A1 (en) * 2010-07-01 2012-01-05 中兴通讯股份有限公司 Battery for communication terminals
US20140042958A1 (en) * 2012-08-10 2014-02-13 Wistron Corporation Base and electronic assembly having the same
US9276423B2 (en) * 2012-08-10 2016-03-01 Wistron Corporation Charging base for multiple different sized components positioned using rotating elements
USD735128S1 (en) 2013-09-12 2015-07-28 The Gillette Company Battery charger
USD808899S1 (en) * 2016-03-14 2018-01-30 Wenjie Li Charger
USD808900S1 (en) * 2016-03-14 2018-01-30 Wenjie Li Charger
USD817871S1 (en) * 2016-03-14 2018-05-15 Wenjie Li Charger
USD810012S1 (en) * 2016-06-15 2018-02-13 Wenjie Li Charger
USD816023S1 (en) * 2016-10-12 2018-04-24 Duracell U.S. Operations, Inc. Battery charger

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JP3080621U (en) 2001-10-05 application
US6384575B1 (en) 2002-05-07 grant

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