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Lenovo ThinkPad Edge E420 Battery
Your Lenovo ThinkPad Edge E420 battery makes your laptop portable so as to work or play where you want. Getting a battery with a higher amp rating is OK, as it suggests the battery will last a bit longer on one charge. What really is critical to a battery fitting your laptop is the connection type and physical size of the battery. The more power the battery has, the longer it will last when fully charged. Because no battery is the same, make sure and double-check the physical connection and size and compare it to the old battery.
Elements of a bad primary battery
- The unit does not turn on while unplugged
- The battery has its case swollen like its about to burst
- The laptop lasts less than half an hour while using the battery only
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