Keeping the laptop plugged in while you use it will also maximize the long term life of the machines expensive to replace batteries. So you can leave the laptop hooked up to the charger all the time when that is practical. You can’t overcharge a laptop, the charger’s or laptop’s charge control system will make sure of that. How long should a laptop battery be charged? Tell us your laptop model and the battery number when you fill the shipping information will help you get a correct item.ĭell Replacement Laptop Batteries, Notebook Batteriesĭell Latitude E6420 Latitude E6520 Replacement Laptop Battery M5Y0X K4CP5 PRRRFġ.Try seach with the laptop model or battery number on our site, you can find it easliy.Battery Capacity: Higher capacity means longer work time.Battery OutPut Volt : 10.8v and 11.1v, 14.4v and 14.8v can compatible each other.Other usefull knowledge for find a correct Dell laptop battery. Tell us your laptop model when fill the shipping informaiton in the shoppping cart.Make sure the part number of your original battery is listed on this page.Make sure the out put volt and battery shape most the same as your original item.How can i do when i didn't find my laptop model listed here? It is show clearly this battery can fit my laptop model.(Not Necessary).It can compatible the battery number of my original battery.The same out put volt as my original battery.My original laptop battery is most the same as the picture in this page.How can i sure this Dell Latitude E6420 Latitude E6520 Replacement Laptop Battery M5Y0X K4CP5 PRRRF is the correct one i need? Dell Latitude E6420 Latitude E6520 Replacement Laptop Battery M5Y0X K4CP5 PRRRF Step 6: Charger battery power more than 30%.Step 5: Use Ev2300 to check the voltage difference of each goroup cells.Step 4: Charger the battery to 100% and recharger to 0% to get real battery capacity.Step 3: Test battery charger and recharger function.Step 2: Check battery's appearance and interface.Step 1: Make sure customer bought the correct battery.How we test this Dell Latitude E6420 Latitude E6520 Replacement Laptop Battery M5Y0X K4CP5 PRRRF