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 flat lithium battery pack with smooth dark finish and connector tabs

Estry

Estry 3.7V 900mAh Lithium Battery for TI Nspire CX CAS TI-84 Plus CE

SKU CH-5RBZ-9PCG2

Replacement lithium cell delivers 3.7V and 900mAh for TI Nspire CX and TI-84 Plus CE calculators

  • TypeBatteries
  • Battery Pack1-pack
  • Battery TypeLithium
  • Battery Capacity900mAh
  • Battery Voltage3.7
  • Compatible with TI-Nspire CX, TI-84 Plus CE and TI-84 CE calculators
  • 900 mAh lithium cell delivers 3.7 V and 4.81 Wh for extended graphing sessions
  • Built-in over-charge, over-discharge, over-voltage and short-circuit protection safeguards the calculator
  • Certified to ISO 9001, RoHS, CE, UN 38.3 and MSDS standards for safety and quality
  • Slim 52.7 x 42.88 x 4.8 mm pack weighs 48.0 g for easy installation

3.7V 900mAh Lithium Replacement

This Estry lithium battery replaces the original power cell in Texas Instruments graphing calculators. It delivers 3.7 volts and 900mAh capacity in a single pack. The cell measures 52.7 x 42.88 x 4.8mm and weighs 48.0g.

Calculators needing TI Nspire CX

Suits students and professionals who own a TI Nspire CX CAS, TI Nspire CX SELECT, TI Nspire CX or TI-84 Plus CE and need a fresh battery. Not for users whose calculator requires a different voltage, capacity or physical size.

Matches part numbers 3.7L12005SPA and P11P35-11-N01

The decisive specification is the exact part-number match. This unit carries part numbers 3.7L12005SPA and P11P35-11-N01. Verify that your device lists one of these numbers before purchase.

Highlights

  • Compatible with TI-Nspire CX, TI-84 Plus CE and TI-84 CE calculators
  • 900 mAh lithium cell delivers 3.7 V and 4.81 Wh for extended graphing sessions
  • Built-in over-charge, over-discharge, over-voltage and short-circuit protection safeguards the calculator
  • Certified to ISO 9001, RoHS, CE, UN 38.3 and MSDS standards for safety and quality
  • Slim 52.7 x 42.88 x 4.8 mm pack weighs 48.0 g for easy installation

Specifications

TypeBatteries
Battery Pack1-pack
Battery TypeLithium
Battery Capacity900mAh
Battery Voltage3.7

Questions about this item

Which calculators must I already own for this 3.7V 900mAh pack to fit?

It fits TI Nspire CX CAS Graphing, TI-84 Plus CE, TI-Nspire CX CAS, TI Nspire CX SELECT, TI-Nspire CX and TI-84 CE models.

Will the replacement sit alongside the original TI charging circuit without modification?

Yes, the pack matches the original 3.7L12005SPA and P11P35-11-N01 specifications, so the existing charger recognises it normally.

How can I confirm the 4.81Wh cell is operating correctly after installation?

The calculator should power on, hold charge through normal use and show no swelling; the pack includes overcharge, over-discharge, over-voltage and short-circuit protection.

Also in this aisle

People compared these

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