Retired model — 2014-16 ThinkPad

Lenovo 45N1126 / 45N1127 / 45N1128 Battery
for Lenovo ThinkPad T440, T450, X240 (2014–2016)

Genuine Lenovo-grade 45N1126 cell — replaced at your doorstep in Hyderabad. Battery dead at 30 minutes? Bottom case bulging? Stop using it — swollen lithium cells can rupture. We replace, calibrate, and test before leaving. ₹2,500–₹4,500 including fitting + free diagnosis.

ThinkPad T440 (2014) ThinkPad T450 (2015) ThinkPad X240/X250 ThinkPad L440/L450 45N1126 family Retired — legacy stock

Get a 45N1126 Quote

Free issue check included — we’ll be in touch shortly

₹149 visit + on-site check
45N1126 specifications

Cell specs at a glance

Capacity
5,800 mAh
Voltage
10.8 V
Energy
63 Wh
Cells
6-cell Li-ion
Chemistry
Li-ion
Cycle life
300+ (legacy stock)
Part Numbers
45N1126, 45N1127, 45N1128, 0C52862, 0C52863
Warranty
30 days
Compatibility

About this 45N1126 battery

One cell — many Lenovo laptops. Here’s how to tell if 45N1126 is your part.

Lenovo ThinkPad T440 / T440s / T440p (2014)

Iconic business workhorse era. Hyderabad institutional fleets ran T440 for years.

Lenovo ThinkPad T450 / T450s (2015)

Refresh with Intel 5th gen Broadwell. 45N1126 is the external 6-cell.

Lenovo ThinkPad X240 / X250 / X260

12.5″ ultraportable ThinkPad. Same 45N1126 6-cell external.

Lenovo ThinkPad L440 / L450 / L540 / L550

L-series business notebooks of the same era.

Retired model — while supplies last

Lenovo no longer manufactures original 45N1126 cells. We carry compatible cells with same spec while stock holds. We’ll show you the part before fitting.

Newer ThinkPad? See L18 / L19

ThinkPad E490+ (2019+) uses L18 cells — see L18M3PEC page for those models.

Common symptoms

When to replace your Lenovo 45N1126 battery

Holds < 30 min charge

Capacity has dropped below 50%. Time for a fresh cell.

Bottom case bulging

Swollen cell — stop using immediately. Risk of rupture.

Sudden shutdowns

Laptop shuts off even with charge shown. Worn cell can’t deliver burst current.

Won’t charge

Plugged in, not charging. Could be cell, charger, or DC jack — we diagnose free.

How it works

Doorstep 45N1126 battery replacement — same day

1

WhatsApp / Call

Send photo of your laptop bottom sticker. We confirm 45N1126 part match.

2

Doorstep visit

Engineer arrives with genuine cell + tools. ₹149 visit covers travel.

3

Fit + calibrate

30–60 min fitting + first-cycle calibration + post-install test.

4

30-day warranty

Warranty on labour. Manufacturer warranty on the cell. No Fix — No Fee.

Transparent pricing

Lenovo 45N1126 battery price in Hyderabad

45N1126 battery (genuine cell)
₹2,500–₹4,500
Genuine Lenovo-grade cell + fitting + calibration + 30-day warranty
Compatible cell (where stocked)
₹1,375–₹2,925
OEM-equivalent capacity. Same fit, same warranty.
Doorstep visit
₹149
Covers travel + free diagnosis. Waived if you book the repair.
Other Lenovo batteries

Choose your Lenovo battery model

Same store, same engineer, different cell. Pick the part that matches your laptop.

FAQs

Lenovo 45N1126 battery — common questions

How can I tell if my Lenovo needs a 45N1126 battery?+
Look at the existing battery for the model number, or check Lenovo Vantage app under Battery info. If it says 45N1126 or 45N1126 / 45N1127 / 45N1128, this is your part. WhatsApp us a photo of the sticker if unsure — we confirm in minutes. Lenovo ThinkPad T440, T450, X240 (2014–2016).
Is the Lenovo 45N1126 battery genuine OEM?+
We stock genuine Lenovo-grade cells, not the cheap clones sold on Amazon that swell within 6 months. The cell is shown to you before fitting. 30-day warranty on labour, manufacturer warranty on the battery itself.
How much does Lenovo 45N1126 battery replacement cost in Hyderabad?+
₹2,500–₹4,500 including fitting + free diagnosis. Final price confirmed at the doorstep visit before any work begins. No Fix — No Fee. Same-day fit if part is available.
My ThinkPad battery is swollen / bottom case bulging. Is it dangerous?+
Yes — stop using it. Swollen lithium cells can rupture or catch fire. Symptoms: case bulging, trackpad lifting, laptop wobbling on flat surface. We collect from your address (₹149 visit), replace with genuine cell, and dispose of the old swollen battery safely.
Do you offer doorstep service for Lenovo batteries across Hyderabad?+
Yes — same engineer collects, fits at your address or our store, and tests before leaving. ₹149 visit charge covers travel + free diagnosis. Service across all 50+ Hyderabad zones — Banjara Hills, Madhapur, HITEC City, Gachibowli, Kondapur, Begumpet, Kukatpally, Dilsukhnagar, Old City, and more.
How long does Lenovo battery replacement take?+
30–60 minutes including diagnosis, calibration, and post-install testing. Same-day if the cell is available (most common Lenovo batteries are). Specialised cells may need 24–72 hour sourcing.
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Need a fresh Lenovo 45N1126 battery?

Same-day doorstep fit. Genuine cell. 30-day warranty. ₹2,500–₹4,500 all-in.