How do I reset the calculator after installing new

Wrong battery, I am researching
1 Lithium Metal batteries required. (included)
https://www.amazon.ca/Texas-Instruments-TI-30Xa-Scientific-Calculator/dp/B00000JBNS

Duracel 76a is a standard alkaline battery according to this

https://www.amazon.ca/Duracell-Specialty-Alkaline-Battery-long-lasting/dp/B007IAWVUM

But No, LR44 is the same as 76a. Did you change both?? You said 'I replaced THE battery', there is clearly two batteries.

https://www.ifixit.com/Guide/Texas+Instruments+TI-30Xa+Battery+Replacement/34616

Time for a new one probably.

Texas Instruments TI-30Xa Scientific Calculator ' www.staples.ca

www.staples.ca > ... > Calculators > Scientific Calculators

4.4. (331) $13.29. - + Rating: 4.4 · ‎343 votes · ‎$13.29 · ‎In stock

Try replacing the batteries.
Here's the official word from TI on replacing the batteries on the TI-30XA.

The TI-30Xa uses two A-76 lithium batteries. Comparable battery model numbers include:

Duracell® D357
Eveready® 357
Maxell® LR44
Varta® V13GA

To replace the batteries:

• Remove slide cover. Place calculator face down.
• Using a small Phillips screwdriver, remove screws from back case.
• Remove back case.
• Remove discharged batteries.
• Install new batteries positive side up, as shown on diagram inside case.
• Run a coin across the reset pad on the upper right hand corner of the printed circuit board.
• Replace back case, and then replace screws.
• Press [OFF], [ON/C], [ON/C].

Note: The calculator cannot hold data in memory when batteries are removed or become discharged.

TI-30Xa uses two A-76 lithium batteries. You can use a Duracell D357 battery, or an Eveready 357 battery.
Using a phillips screwdriver, remove the screws from the back case. Remove the back case.
Remove the discharged batteries. Install the new batteries with thepositive side up, as shown on the diagram inside the case.
Run a coin across the reset pad on the upper right hand corner of the printed circuit board.
Replace the back case Replace the screws. Press [OFF], [ON/C], [ON/C].

To replace the batteries:

• Remove slide cover. Place calculator face down.
• Using a small Phillips screwdriver, remove screws from back case.
• Remove back case.
• Remove discharged batteries.
• Install new batteries positive side up, as shown on diagram inside case.
• Run a coin across the reset pad on the upper right hand corner of the printed circuit board.
• Replace back case, and then replace screws.
• Press [OFF], [ON/C], [ON/C].
Note: The calculator cannot hold data in memory when batteries are removed or become discharged.

• Remove slide cover. Place calculator face down.
• Using a small Phillips screwdriver, remove screws from back case.
• Remove back case.
• Remove discharged batteries.
• Install new batteries positive side up, as shown on diagram inside case.
• Run a coin across the reset pad on the upper right hand corner of the printed circuit board.
• Replace back case, and then replace screws.
• Press [OFF], [ON/C], [ON/C].

The TI-30Xa uses two A-76 lithium batteries. Comparable battery model numbers include: Duracell® D357 and Eveready® 357

Here is how to reset.

The battery is EPX76 (it uses 2)

This page describes how to get into the calculator to replace them;
http://tutorialninjas.net/2007/05/04/replacing-the-battery-in-your-ti-30xa-calculator/


The batteries can cost as much as $5 each, a new calculator can be as low as $10

Good Luck!

It's cheaper to buy the new one. On amazon they are pretty cheap. take a look Amazon com TI 30X. cheers

The battery is EPX76 (it uses 2)

This page describes how to get into the calculator to replace them;
http://tutorialninjas.net/2007/05/04/replacing-the-battery-in-your-ti-30xa-calculator/

The batteries can cost as much as $5 each, a new calculator can be as low as $10

Good Luck!