<p>so I realize this is a stupid question, but I'll ask anyways. Does anyone know how to change the batteries in a calculator (specifically, a TI-83 plus silver edition) without it erasing all the programs that have been added? Last time I changed my calculator's batteries, all my programs got erased. I want to change the batteries again so they're fresh for the AP test, but I don't want to lose all my programs. </p>
<p>thanks!</p>
<p>Make sure the backup battery (the one that takes the screw) is working. Then you TURN OFF your calculator. Then you can change the batteries.</p>
<p>There’s actually a cord you can buy to download your programs from your TI to a computer, if you’re interested.</p>
<p>Depending on how dead your batteries are, you might be able to save the programs by removing the AAA batteries one at a time and replacing them one at a time.</p>
<p>If this doesn’t work (and it won’t help you for this time, but perhaps for next time), there is a backup battery hidden further up in the casing. I don’t know how to replace that battery, but somebody at TI should be able to help you. Their number is 1-800-TI-CARES.</p>
<p>Good luck.</p>
<p>thank you both!</p>
<p>what Liist said.</p>
<p>or you could just archive your programs if your back-up battery is dead like mine.</p>
<p>I didn’t know that archiving could work.</p>
<p>Also, is there a way to check the status of the back-up battery?</p>
<p>The only way I know of is to take it out and use a multimeter.</p>
<p>Wait what? If you replace the batteries then your programs get deleted??</p>
<p>I replaced them the other day and none of mine were deleted…</p>
<p>It used to be that way, anyway. It might depend on how dead your batteries are.</p>
<p>Mutimeter checks the amount of voltage that a battery gives out. If it’s far below the stated voltage number, then it’s dead. Unless your dad does a lot of DIY work around the house, he probably doesn’t have one.</p>