What Battery Does a Lenovo ThinkPad X1 Carbon 2nd Take?
Lenovo ThinkPad X1 Carbon 2nd
Here is the replacement battery this laptop takes.
Battery
Part numbers
45N1703— seen in 14 reports45N1701— seen in 10 reports00HW002— seen in 1 report
These are interchangeable OEM part numbers — any of these fits this slot.
- Manufacturer
- SMP, SONY, SANYO
- Capacities observed
- 45 Wh, 44.9 Wh, 50.2 Wh, 42.9 Wh
- Voltage
- 14.80 V
- Chemistry
- Li-poly
This model legitimately shipped with multiple capacities in this slot — match the Wh rating on your existing battery’s label.
Based on 25 reports.
Based on 25 independent hardware reports for the Lenovo ThinkPad X1 Carbon 2nd.
Before you order: check the part number printed on the label of your current battery against the numbers above. Vendors frequently ship different battery suppliers — or entirely different capacities — under the very same model name, so the printed part number is the only way to be certain of a fit.
Disclosure: This post may contain affiliate links. If you purchase through these links, we may earn a small commission at no extra cost to you.
Check how much RAM it takes →Check its SSD too →
How we know
This answer is derived from 25 independent hardware reports for the Lenovo ThinkPad X1 Carbon 2nd, of which 100% agree. We publish a model only when the reports agree overwhelmingly.
Check it yourself
On Windows, open a terminal and run powercfg /batteryreport, then open the generated HTML report — it names the battery’s model and part number. On Linux, run upower -i /org/freedesktop/UPower/devices/battery_BAT0. On any laptop, the surest method is the label printed on the battery itself, visible once you remove the back panel.
More Lenovo laptops
Battery part numbers derived from linuxhw/DMI, licensed CC-BY-4.0.