What Battery Does a Lenovo B590 20208 Take?
Lenovo B590 20208
Here is the replacement battery this laptop takes.
Battery
Part numbers
45N1049— seen in 38 reports45N1043— seen in 10 reports45N1045— seen in 4 reports
These are interchangeable OEM part numbers — any of these fits this slot.
- Manufacturer
- LGC, SANYO, SMP
- Capacities observed
- 40.4 Wh, 38.9 Wh, 42.8 Wh, 47.5 Wh
- Voltage
- 10.80 V
- Chemistry
- Li-ion
This model legitimately shipped with multiple capacities in this slot — match the Wh rating on your existing battery’s label.
Based on 53 reports.
Based on 53 independent hardware reports for the Lenovo B590 20208.
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.
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Check how much RAM it takes →Check its SSD too →
How we know
This answer is derived from 53 independent hardware reports for the Lenovo B590 20208, 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.