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Rectangular black 6-cell laptop battery with connector

NShi

NShi 6-cell 11.1V 44Wh laptop battery for ThinkPad T420i T420s T430s

SKU CH-K9JV-F1PN2

6-cell 11.1 V 44 Wh Li-ion pack replaces Lenovo 0A36287, 42T4844-47 and 45N1036-1143 for ThinkPad T420i, T420s and T430s

  • Battery TypeLithium Polymer
  • 44Wh capacity keeps your ThinkPad running longer
  • 1V lithium-ion chemistry delivers stable power output
  • 6-cell design balances runtime with slim fit
  • Replaces Lenovo part numbers 42T4844 through 45N1143
  • Compatible with T420i T420s T430s series laptops

6-cell 11.1V 44Wh replacement battery

This new lithium-ion battery delivers 44Wh at 11.1V across six cells and replaces Lenovo part numbers such as 42T4844 42T4845 42T4846 42T4847 45N1036 45N1037 45N1038 45N1039 45N1064 45N1065. It is built for ThinkPad T420i T420s and T430s models listed in the compatibility data.

Installation notes and common issues

If the battery is not recognised on first fit, reseat the connector and verify it is fully engaged. The supplier advises discharging to 5 percent then completing three to four full charge cycles to wake the pack. Connector shape and cable length can vary between production batches so match the photos before ordering.

Capacity and runtime expectations

At 44Wh and 3900mAh the pack restores original runtime for everyday office work and web browsing on the supported ThinkPad models. Heavy loads such as sustained video encoding or discrete graphics use will drain it faster and may require a midday recharge.

Highlights

  • 44Wh capacity keeps your ThinkPad running longer
  • 1V lithium-ion chemistry delivers stable power output
  • 6-cell design balances runtime with slim fit
  • Replaces Lenovo part numbers 42T4844 through 45N1143
  • Compatible with T420i T420s T430s series laptops

Specifications

Battery TypeLithium Polymer

Questions about this item

How can I confirm the 11.1V 44Wh battery is working correctly after installing it in my ThinkPad T420s?

The system should detect the 6-cell pack immediately and report 11.1 V and 44 Wh in the power manager. If it is not recognised, reseat the connector, discharge to 5 %, then complete 3 to 4 full charge cycles to wake the cells.

What comes in the box and is there anything else I need to buy for a ThinkPad T430s installation?

Only the 6-cell 11.1 V 44 Wh lithium-ion battery is supplied. No tools, screws, cables or AC adapter are included; reuse the existing hardware from the laptop.

Which part number should I match — 42T4844, 45N1036 or 45N1143 — when choosing this battery for a T420i?

All three numbers are listed as direct replacements for the T420i series, so any of them confirms compatibility; pick the one printed on your original battery label.

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