This is a practical battery for Acer Aspire 4551 4741 4771 5741. Under normal circumstances， the more cells decide the greater mAh. With 9 cells， this battery will satisfy your demand. It could give you the portability and efficiency during using especially when you are outdoors. And this battery will certainly make your laptop regain energy by the use of the high capacity battery. It provides you with the strong battery life， which is great to solve the problems of the short life and poor performance. With fine workmanship and strict examination， this battery is up to standard that you can trustingly use it without any worry.                                    Features            You can get long hours of battery life without having to frequently plug into recharge with itNo memory effect. Chargeable even if it has not been used up yetUsing advanced cell technology and quality parts， it guarantees the stamina to meet your need of long work sessions and travelManufactured to the highest quality available with true enhanced performancePowered by high quality cellsCan be charged while it is installed and the computer is connected to AC power                                                             Specifications            Dimensions    10.62 x 2.05 x 1.57" / 27 x 5.2 x 4 cm (L x W x H)    <br>Weight    4.48 oz / 127 g    <br>Color    Black    <br>Voltage    10.8V    <br>Capacity    7800mA    <br>Cell    9cell    <br>Compatible Part Numbers    31CR19/65-2， 31CR19/652， 31CR19/66-2， 3INR19/65-2， AK.006BT.075，AK.006BT.080， AS10D， AS10D31， AS10D3E， AS10D41， AS10D51， AS10D5E，AS10D61， AS10D71， AS10D73， AS10D75， AS10D7E， AS10D81， BT.00603.111，BT.00603.117， BT.00603.124， BT.00603.129， BT.00604.049， BT.00605.062，BT.00605.065， BT.00605.072， BT.00605.072M， BT.00606.008， BT.00607.125，BT.00607.126， BT.00607.127， BT.00607.130， BT.0060G.001， LC.BTP00.123， LC.BTP0A.015    <br>Compatible with    eMachineLaptops:D440D442D528D640D640GD728D730D730GD732D732GD732ZD732ZGE440E442E530E640E640GE730E730GE732E732GE732ZE732ZGG640G640GG730G730GG730ZG730ZG<br><br>PackardBellEasyNoteModels:LM81LM86NM85NM87TK37TK81TK83TK87TM80TM81TM82TM83TM85TM86TM87TM89<br><br>AcerAspireModels:425142524253433345514551G45524552G4552Z47384738G4738Z4738ZG47414741G4741Z4741ZG47504750G4771 525152525253533655515551G55525552G57365736G5736Z57415741Z5741ZG57425742G5742Z5742ZG75517551G75527552G77415741G7741G7741Z7741ZG<br>AcerTravelMateModels:47404740g4740z47504750G55425542g57405740g57425742g5742z5742zg57445744Z57605760G77407740g7740z7740zg77507750G7750Z84728472g8472z8472zg85728572G8572TGGATEWAY Models:Gateway NS41I，Gateway NS51I，Gateway NV50A，Gateway NV51B，Gateway NV55C，Gateway NV59C，<br>Gateway NV73A，Gateway NV49，Gateway NV53 ，Gateway NV79Acer Aspire E1 Series<br>    Aspire E1， Aspire E1-471G-32352G50Mnks，<br>    Aspire E1-521， Aspire E1-531-2644，<br>    Aspire E1-531-2697， Aspire E1-531-4444，<br>    Aspire E1-531-4694， Aspire E1-531-B824G32Mnks，<br>    Aspire E1-531-B8304G50Mnks， Aspire E1-531-B9504G32Mnks，<br>    Aspire E1-531-B9604G50Mnks， Aspire E1-571-32324G50Mnks，<br>    Aspire E1-571-33114G50Mnks， Aspire E1-571-53214G50Mnks，<br>    Aspire E1-571-53216G50Mnks， Aspire E1-571-6442，<br>    Aspire E1-571-6454， Aspire E1-571-6481，<br>    Aspire E1-571-6490， Aspire E1-571-6492，<br>    Aspire E1-571-6634， Aspire E1-571-6650<br><br> Acer Aspire V3 Series<br>    Aspire V3， Aspire V3-471，<br>    Aspire V3-551-84504G50Makk， Aspire V3-551-8469，<br>    Aspire V3-551-8664， Aspire V3-551-8809，<br>    Aspire V3-551G-84504G50Makk， Aspire V3-551G-8454，<br>    Aspire V3-571-53216G75Makk， Aspire V3-571-6643，<br>    Aspire V3-571-6698， Aspire V3-571-6800，<br>    Aspire V3-571-73634G50Makk， Aspire V3-571-73636G75Makk，<br>    Aspire V3-571-9401， Aspire V3-571-9831，<br>    Aspire V3-571-9890， Aspire V3-571G-52454G75Mai，<br>    Aspire V3-571G-53214G50Makk， Aspire V3-571G-6407，<br>    Aspire V3-571G-6602， Aspire V3-571G-6641，<br>    Aspire V3-571G-9435， Aspire V3-571G-9686，<br>    Aspire V3-731-4473， Aspire V3-731-4695，<br>    Aspire V3-731-B9606G50Makk， Aspire V3-771-6683，<br>    Aspire V3-771G-6601， Aspire V3-771G-6650，<br>    Aspire V3-771G-9665， Aspire V3-771G-9875    <br>                                                            Package Includes            1 x Battery<br>1 x User Manual<br>