Create a [link|https://www.tomsguide.com/how-to/how-to-check-battery-health-in-windows-10|battery report] and use it to check the condition of the battery.
When you have the report, compare the ''Design Capacity'' value versus the ''Full Charge Capacity'' value, as shown in the report.
For a new battery the values would be the same but given that your laptop is 8 years old and presumably the battery hasn't been replaced, this wont be the case.
Use the formula ''Full Charge Capacity value x 100 ÷ Design Capacity value,'' to find the charge percentage (%) value of the battery.
If the charge % is <35% you may consider that replacing the battery is necessary. The Lenovo battery part number (examples only of what it might be, ''4X50K14092, 01AV451)'', should be printed on the battery. Search online for the part number ''only'', shown on your battery, to find suppliers that suit you best.
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=== Update (11/07/24) ===
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@heite
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Perhaps check if the latest battery driver [https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-p-series-laptops/thinkpad-p71/downloads/driver-list/component?name=Power%20Management&id=E1B533C3-16CA-4FBE-8BD8-FB5D7A57F431|V10.1.10.0] is installed.
Create a [https://www.tomsguide.com/how-to/how-to-check-battery-health-in-windows-10|battery report] and use it to check the condition of the battery.
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Create a [link|https://www.tomsguide.com/how-to/how-to-check-battery-health-in-windows-10|battery report] and use it to check the condition of the battery.
-
When you have the report, compare the ''Design Capacity'' value versus the ''Full Charge Capacity'' value as shown in the report. For a new battery the values would be the same but given that your laptop is 8 years old and presumably the battery hasn't been replaced, this wont be the case.
+
When you have the report, compare the ''Design Capacity'' value versus the ''Full Charge Capacity'' value, as shown in the report.
+
+
For a new battery the values would be the same but given that your laptop is 8 years old and presumably the battery hasn't been replaced, this wont be the case.
Use the formula ''Full Charge Capacity value x 100 ÷ Design Capacity value,'' to find the charge percentage (%) value of the battery.
-
If the charge % is <35% you may consider replacing the battery is necessary. The Lenovo battery part number (example only of what it might be ''4X50K14092, 01AV451'', should be printed on the battery. Search online for the part number ''only'', to find suppliers that suit you best.
+
If the charge % is <35% you may consider that replacing the battery is necessary. The Lenovo battery part number (examples only of what it might be, ''4X50K14092, 01AV451)'', should be printed on the battery. Search online for the part number ''only'', shown on your battery, to find suppliers that suit you best.
Hi @heite,
It could be a faulty battery.
Create a [https://www.tomsguide.com/how-to/how-to-check-battery-health-in-windows-10|battery report] and use it to check the condition of the battery.
When you have the report, compare the ''Design Capacity'' value versus the ''Full Charge Capacity'' value as shown in the report. For a new battery the values would be the same but given that your laptop is 8 years old and presumably the battery hasn't been replaced, this wont be the case.
Use the formula ''Full Charge Capacity value x 100 ÷ Design Capacity value,'' to find the charge percentage (%) value of the battery.
If the charge % is <35% you may consider replacing the battery is necessary. The Lenovo battery part number (example only of what it might be ''4X50K14092, 01AV451'', should be printed on the battery. Search online for the part number ''only'', to find suppliers that suit you best.