Model Number:4741 Use:LAPTOP, Notebook Type:Standard Battery, Battery Pack, lithium, Rechargeable Color:Black Compatible Brand:For ASUS Voltage:10.8V Capacity:48Wh1.Perfect Production Process 2.Professional equipment, good products make you rest assured to buy and use with peace 3.Professional test 4.Each product is strictly tested. To ensure that the product has no quality problems 5.Real Machine Test 6.Guarantee high-quality products and win customer trust with high-qualityQ: the battery working time is a little short. It is not better as our genuine one. A: 1. Please check our estimate working time when it charged full. Reference only. The result maybe different , based on your laptop. this is not genuine one , it is better read this item specification before made payment, they comes from our supplier design. 2. We tested battery quality before send, charge and turn it on etc. it maybe runs some power in transit. So, charge it to full. 3. when you get it , use to 10% (2% at our user manual), charge it to full. Like do that cycle 3 to 4 times. This battery will runs better. 4. because the li-ion battery feature, our battery power capacity is our design value. The result value could not reach up to that everytime. It accept a error range. So, some brand laptop power management software or tools, they tested this battery, the result could not match our power capacity. If you mind, it is better buy genuine battery. Q: this battery could not detected by my laptop. A: 1. Check you bought correct item or not. If you do not know, it is better ask seller via eBay message in English. 2. have a try update your laptop BIOS to new version, it makes your laptop read the battery chipset. 3. If you good at repair laptop, but it is not very good. Have a try ask for more professional personal help you. 4. check laptop, power adapter, and our battery individual. Confirm the key problem. 5. if you confirmed this battery defective. It is better contact seller via ebay message solve. Provided some useful information to seller, then get seller solution. Such as your laptop model, problem details, item details which you get etc.1. Do not unplug the external power supply during charging. 2. Please use the special battery and charger suitable for your notebook. 3. If you are using the laptop for the first time, or if you have not used it for a long time (three weeks or more), make sure to fully discharge the battery and then fully charge it to restore the battery to its maximum power . 5. If the laptop is not used for a long time (more than three weeks), we recommend that you unplug the battery and store the battery separately. 6. Because the lithium-ion battery will pollute the environment after damage, it also has certain dangers. Please don't throw it away. When you are ready to dispose of old batteries, please contact your local agency for disposal instructions 7. If the battery is not used for a long time, it can be removed, but the battery must be charged (to prevent damage caused by excessive discharge of the battery) Replacement Part Numbers: (Ctrl + F for fast search your laptop part numbers) 31CR19/652 31CR19/65-2 31CR19/66-2 AK.006BT.075 AK.006BT.080 AS10D AS10D31 AS10D3E AS10D41 AS10D51 AS10D61 AS10D71 AS10D73 AS10D75 AS10D81 AS10G3E BT.00603.111 BT.00603.117 BT.00603.124 BT.00604.049 BT.00605.062 BT.00605.065 BT.00606.008 BT.00607.125 BT.00607.126 BT.00607.127 BT.00607.130 Compatible with models: (Ctrl + F for fast search your laptop model) Aspire 4551 4551G 4741 4741G 4741Z 4771 4771G 4771Z 5741 5741G 5741Zand TravelMate4740 4740G 4740Z 5740 5740G 5740ZandGatewayNV49C NV53A NV59CandPackardBellEastNoteLM NM TM EmachineD640