WUHAO TI-84 Plus CE Battery Replacement [2025 Upgraded] 1500mAh for Texas Instruments TI-84 CE/TI 84 Plus CE/TI-Nspire CX II/Color TI Nspire CX Part No 3.7L12005SPA P11P35-11-N01 Battery 3.7V

Works as advertised. So far no issues. Fits perfectly and fixed the error my Calc was having (known issue with T Calc - a bad battery issue they have addressed).

Simple simon, a perfect fit, my calculator is ALIIIIVE!

Grandson wanted battery for his calculator to add a game.

My daughter's calculator wouldn't boot and it turns out the battery was defective. Install the new battery and it started up with no issues.

My original batt is model: 3.7L1200SPA and same part number as this product. Fits and takes charge, but time will tell how well it holds up. I thought it was bad cause was doing the same as my old batt not charging using wall outlet adapter usb charger and just staying green. I plugged cord into a usb port on pc and charged like it should with yellow light on and going green hours later. My old batt took charge as well this way and was apparently still good. Just will have a back up battery now and reviewing this about charging issues to help others.

The "Validating OS ......" loop immediately gone after replacing the old battery with this one. So far so good.

No longer have to charge my calculator every week, good as new.

Our 3-month old TI-84 Plus CE was in a loop and would not turn on. Could not find a genuine TI battery so this was the next best thing. Glad we made this purchase as the calculator booted up immediately. This saved us $120! Definitely give this battery a try if you have the same problem.