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Rectangular black projector lamp module with metal housing and connector pins

Premium Power Products

Premium Power Products 42T4789 projector lamp

SKU CH-SV5Z-B0JCP MPN 42T4789

Replacement projector lamp compatible with numerous Lenovo part numbers

  • Compatible with Lenovo ThinkPad X100e laptop
  • Replaces Lenovo part 42T4789 directly
  • Also fits part numbers 42T4781 through 42T4788
  • Covers additional Lenovo codes 42T4829 to 42T4897
  • Works with 57Y4558 and 57Y4559 batteries

Replacement Battery for ThinkPad X100e

This Premium Power Products battery replaces the original Lenovo unit in ThinkPad X100e laptops. It matches the 42T4789 part number and the long list of compatible Lenovo codes such as 42T4787, 42T4897 and 57Y4559. The cell is supplied new and ready to install.

Direct-fit connector and latch

The pack uses the factory connector and latch geometry so it seats in the X100e bay without adapters or cable routing. Alignment pins match the chassis slots, letting the battery click into place and lock with the original release lever. No soldering or case modification is required.

Part-number match decides fit

Verify that your service tag or old battery label shows 42T4789 or one of the listed alternates such as 42T4785, 42T4891 or 0A36278 before ordering. Systems that call for a different Lenovo part number will not accept this pack.

How it compares

Measured against everything we stock in Replacement Projector Bulbs, at today’s prices. Recalculated every night.

Price $50.99
Cheaper than about 92% of the 9,513 comparable items (median $99.99).

Specifications

Product
Brand namePremium Power Products
Model name42T4789
Size & build
Shipping weight0.91 kg
Package size279 × 76 × 51 mm

Questions about this item

Does the 42T4789 battery use the same connector as the 42T4897 and 57Y4559 packs?

Yes, the 42T4789 is compatible with the 42T4897, 57Y4559 and all other listed part numbers, so it shares the same connector and pinout.

Will the 42T4789 fit inside the battery bay of a ThinkPad X100e without modification?

The 42T4789 is built for the ThinkPad X100e, so its dimensions match the original battery bay exactly and no trimming or adapters are needed.

What is the common mistake when inserting the 42T4789 into the X100e?

People often slide the pack in without pressing firmly until both side latches click, leaving the battery loose and the contacts unseated.

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