We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Rectangular black laptop battery with six cells and label showing 11.1V 44W

PISKEKAT

PISKEKAT 81+ 11.1V 44W 6-Cell Laptop Battery for ThinkPad T420s T430s

SKU CH-5CXX-ZN58J

Replacement 11.1 V 44 W 6-cell battery fits ThinkPad T420s and T430s series

  • Battery TypeLaptop Batteries
  • Fits ThinkPad T420s T430s series directly
  • 1 V 44 W six-cell design powers long sessions
  • Grade A cells deliver up to 500 recharge cycles
  • Built-in circuit protection keeps voltage stable
  • Replaces Lenovo 45N1065 42T4844 42T4845 42T4846 42T4847

PISKEKAT 81+ 6-Cell Laptop Battery

The PISKEKAT 81+ is a brand-new replacement battery built for Lenovo ThinkPad T420s T420si T430S T430si series laptops. It uses Grade A cells rated for up to 500 recharge cycles and includes built-in circuit protection for stable operation. This unit suits owners of those specific ThinkPad models who need a direct drop-in power source. It is not for users whose laptops require a different voltage or cell configuration.

11.1 V 44 W Electrical Rating

The decisive specification is the 11.1 V 44 W rating combined with a six-cell layout matching the original 81+ design. Only systems that shipped with this exact voltage and wattage will recognise the pack and charge it correctly. Buyers must verify their current battery carries one of the listed Lenovo part numbers such as 42T4844 42T4845 42T4846 42T4847 45N1036 45N1037 45N1038 45N1039 45N1064 45N1065 45N1143 or 0A36287.

Fits T420s T430s Chassis Directly

The battery slides into the standard battery bay on the underside of compatible ThinkPad T420s and T430s units without adapters or cable changes. It draws power from the existing charging circuit and frees the user from relying on the AC adapter for mobile work. No additional hardware or firmware steps are required beyond the normal BIOS battery calibration routine.

Highlights

  • Fits ThinkPad T420s T430s series directly
  • 1 V 44 W six-cell design powers long sessions
  • Grade A cells deliver up to 500 recharge cycles
  • Built-in circuit protection keeps voltage stable
  • Replaces Lenovo 45N1065 42T4844 42T4845 42T4846 42T4847

Specifications

Battery TypeLaptop Batteries

Questions about this item

How long will the 44 Wh capacity run a ThinkPad T420s under typical office work?

The 44 Wh, 11.1 V pack delivers roughly three to four hours of mixed document and web use on a T420s, depending on screen brightness and background tasks.

What connector and charging protocol does the 81+ battery use with the T430s?

It mates with the standard ThinkPad 20-pin bay interface and charges through the laptop’s built-in controller; no proprietary protocol or extra adapter is required.

Will the 6-cell 81+ pack sit flush in a T420si without a protruding ridge?

Yes, the 6-cell 81+ form factor matches the original 42T4844/45N1065 dimensions, so it locks flush into the T420si and T430si battery bay.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.