New New N121Y Dell Inspiron 3421 5421 3521 5521 3721 5721 14 15 17 MR90Y XCMRD Laptop Battery in 1-se-t

100% Brand new, Grade A cells battery;

Quality assurance;

• Every battery has passed factory testing, 500+ recharge cycles over the life of the battery.
• Every battery has passed strict intelligent detection, such as short circuit protection, over voltage protection, discharge protection, over current protection, which is very important for battery’s use cycle and safety. Built-in circuit protection ensure both safety and stability.
• All batteries are equipped with high quality material to ensure good performance. CE, FCC, RoHS certificated.

HOW TO GET THE RIGHT BATTERY

Find the right laptop model, (Method 1):

• Step 1: Press the key, ‘windows’ + ‘R’
• Step 2: Type msinfo32, then click the button ‘ok’
• Step 3: Check ‘System Model’ in the pop up window

Find the right battery model, (Method 2):

• Step 1: Switch off the laptop and unplug the power cable
• Step 2: Remove the back panel with the screwdriver. You should do this careful ading any harm to the laptop components.
• Step 3: Disconnect the cable connected to the battery. Then you can check the part number or the model name on battery.

For Optimal battery Use:

• Please install the battery correctly and ensure that the battery interface and the motherboard are firmly connected. Use Skills - If the new battery is not recognized during the initial installation, please reinstall and check if the interface is fully connected.
• If you install the battery and the laptop cannot detect the battery or the battery level cannot be displayed normally, check whether the battery cable was installed properly.
• Discharge the new battery to 5% (not 0%), then charge and cycle 3-4 times to get the new battery a full capacity.
• The important point is to perform a full discharge charge every other month to extend battery life.
• Don't connect adapter for a long time while using the battery. It may damage the battery.
• Ad artificial shocks, disassembly, crush or puncture. Do not dispose of in fire or water.
• Ad using the battery in an environment where the temperature is too high or too low.
• Please use the original charger to charge the laptop.
• Connector - Before placing your order, Please open the back cover of the laptop to confirm the battery model and capacity, refer to the picture and check it. Because the products produced by different factories will have differences, such as size, cable length, interface, etc.

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