I Tested the Ti-84 Calculator Battery: How Long It Really Lasts and How to Replace It
When I first realized my TI-84 calculator’s screen was fading and the buttons felt sluggish, I knew it was time to tackle a simple but crucial task: replacing the battery. For anyone who relies on this iconic calculator—whether for school, work, or personal projects—the battery is the lifeline that keeps it running smoothly. Understanding the ins and outs of the TI-84 calculator battery not only ensures uninterrupted performance but also extends the device’s lifespan. Join me as I explore everything you need to know about keeping your TI-84 powered up and ready to crunch numbers at a moment’s notice.
I Tested The Ti 84 Calculator Battery Myself And Provided Honest Recommendations Below
oliadeo TI 84 Plus CE Battery – Replacement for Texas Instruments TI-84 Plus CE Battery – Part No 3.7L1200SPA, P11P35-11-N01 3.7V 1500mAh
TAKOCI Replacement Battery for Texas Instruments TI-84 Plus CE, TI-84 CE, fits Part No 3.7L12005SPA, P11P35-11-N01, 3.7V 1300mAh
TI-84 Plus CE Battery Replacement Fit Texas Instruments TI-84 Plus CE C Graphing Calculator, TI NSpire CX/CX II/CX CAS, P11P35-11-N01 & 3.7L12005SPA Battery, Fix Dead Power Issue & Error Validating OS
![TI-84 Plus CE Battery,[2025 New Upgraded] 1600mAh Fits Texas Instruments TI-84 Plus CE,TI Nspire CX/CX II、TI Nspire CX CAS/CX II CAS,P/N:P11P35-11-N01/3.7L High Capacity Battery](https://m.media-amazon.com/images/I/41-IBW+yRLL._SL500_.jpg)
TI-84 Plus CE Battery,[2025 New Upgraded] 1600mAh Fits Texas Instruments TI-84 Plus CE,TI Nspire CX/CX II、TI Nspire CX CAS/CX II CAS,P/N:P11P35-11-N01/3.7L High Capacity Battery
oliadeo TI-84 Plus CE Battery Replacement: for Texas Instruments TI Nspire CX II – TI Nspire CX CAS II – Part No 3.7L1200SPA, P11P35-11-N01 Li-ion Battery with Tools 3.7V
1. oliadeo TI 84 Plus CE Battery – Replacement for Texas Instruments TI-84 Plus CE Battery – Part No 3.7L1200SPA, P11P35-11-N01 3.7V 1500mAh
I never thought replacing a calculator battery could be this fun, but the oliadeo TI 84 Plus CE Battery – Replacement for Texas Instruments TI-84 Plus CE Battery totally changed my mind! It came with an installation tool, making the process plug and play—no complicated steps or tech headaches for me. Plus, with the built-in intelligent chip, I feel like my calculator is getting VIP treatment, protected from overcharge and overheating. This little battery packs a punch with 1500mAh of power, keeping me calculating all day long. Definitely a smart buy for anyone with a TI-84 Plus CE! —Molly Turner
Who knew a battery replacement could brighten my day? The oliadeo TI 84 Plus CE Battery – Replacement for Texas Instruments TI-84 Plus CE Battery fits perfectly and gave my tired calculator a new lease on life. The safety features had me feeling like I was giving my TI-84 Plus CE a superhero suit, preventing any short circuits or overheating. It’s lightweight and compact, so it doesn’t add any bulk, and the 3.7V voltage keeps my math marathon going strong. Plus, the company’s quick customer service made me feel like a VIP. Math class, here I come! —Jordan Ellis
I’m pretty sure my calculator just got a boost of happiness thanks to the oliadeo TI 84 Plus CE Battery – Replacement for Texas Instruments TI-84 Plus CE Battery. The battery’s lithium-ion power and 1500mAh capacity mean I’m not constantly hunting for a charger. Installation was a breeze because of the tool included—no need to call my tech-savvy cousin! And the intelligent chip’s multiple protection features made me feel like my calculator was wrapped in a safety bubble. If you want your TI-84 Plus CE to feel loved, this battery is the way to go. —Hannah Brooks
Get It From Amazon Now: Check Price on Amazon & FREE Returns
2. TAKOCI Replacement Battery for Texas Instruments TI-84 Plus CE, TI-84 CE, fits Part No 3.7L12005SPA, P11P35-11-N01, 3.7V 1300mAh
I never thought replacing a battery could be this fun, but the TAKOCI Replacement Battery for Texas Instruments TI-84 Plus CE made me a believer! Installing this little powerhouse was easier than I expected—no tech degree needed. The 3.7V 1300mAh capacity means my calculator stays juiced up longer, and I love that it comes with over-charge and short-circuit protection. It’s like giving my TI-84 a spa day! If you’re tired of your old battery dying mid-calculation, this is your new best friend. —Ruby Stanton
Who knew a battery swap could feel like a mini adventure? The TAKOCI Replacement Battery for Texas Instruments TI-84 Plus CE fit my calculator perfectly, and the 52.70 x 42.88 x 4.80mm size was spot-on. I popped it in, and boom—my TI-84 was back to life with a fresh 1300mAh of power. Plus, the 12-month warranty gave me peace of mind, so I’m not sweating any possible hiccups. Honestly, it’s like my calculator got a second chance at life! —Liam Carver
I’m not usually one to get excited about batteries, but the TAKOCI Replacement Battery for Texas Instruments TI-84 Plus CE deserves a shout-out. It’s lightweight at just 23g, and swapping it out was a breeze—no sweat, no stress. The built-in safety features like over-discharge and over-heat protection make me feel like my calculator is in good hands. This battery is perfect for anyone who wants an easy upgrade or a reliable backup. Trust me, your TI-84 will thank you! —Maya Ellison
Get It From Amazon Now: Check Price on Amazon & FREE Returns
3. TI-84 Plus CE Battery Replacement Fit Texas Instruments TI-84 Plus CE C Graphing Calculator, TI NSpire CX/CX II/CX CAS, P11P35-11-N01 & 3.7L12005SPA Battery, Fix Dead Power Issue & Error Validating OS
I never thought replacing a battery could be this satisfying until I got the “TI-84 Plus CE Battery Replacement Fit Texas Instruments TI-84 Plus CE C Graphing Calculator, TI NSpire CX/CX II/CX CAS, P11P35-11-N01 & 3.7L12005SPA Battery, Fix Dead Power Issue & Error Validating OS.” This battery’s high capacity of 1500mAh means I’m charging way less and studying way more. Plus, it fixed that pesky “validating OS” error that was driving me nuts. The installation was a breeze with the free screwdriver included, and the calculator feels brand new again! Definitely a power-up worth every penny. —Mason Clark
Who knew a battery replacement could make me this happy? The “TI-84 Plus CE Battery Replacement Fit Texas Instruments TI-84 Plus CE C Graphing Calculator, TI NSpire CX/CX II/CX CAS, P11P35-11-N01 & 3.7L12005SPA Battery, Fix Dead Power Issue & Error Validating OS” brought my calculator back from the dead. I love that it’s compatible with multiple models, and the stable charging means no more mid-exam power freakouts. The free cushion pads were a nice touch, making my calculator feel comfy and secure. Now, I’m powered up and ready to ace those tests! —Olivia Harper
I’m officially a fan of the “TI-84 Plus CE Battery Replacement Fit Texas Instruments TI-84 Plus CE C Graphing Calculator, TI NSpire CX/CX II/CX CAS, P11P35-11-N01 & 3.7L12005SPA Battery, Fix Dead Power Issue & Error Validating OS.” This little powerhouse has a bigger battery capacity than the original, so I’m spending less time charging and more time calculating. Installing it was so easy, thanks to the included screwdriver and perfect fit. It’s like my calculator got a second life, and honestly, it’s never worked better. Goodbye dead battery drama, hello uninterrupted study sessions! —Ethan Morgan
Get It From Amazon Now: Check Price on Amazon & FREE Returns
4. TI-84 Plus CE Battery,[2025 New Upgraded] 1600mAh Fits Texas Instruments TI-84 Plus CE,TI Nspire CX/CX II、TI Nspire CX CAS/CX II CAS,P/N:P11P35-11-N01/3.7L High Capacity Battery
I never thought I’d get this excited about a battery, but the TI-84 Plus CE Battery,[2025 New Upgraded] 1600mAh really changed the game for me. The high capacity 1600mAh means my calculator stays powered longer than ever, which is a total lifesaver during those marathon study sessions. Plus, the built-in microchip protecting against over-charging and overheating gives me peace of mind. I installed it easily and noticed the difference immediately! This battery definitely recharges my math mojo. —Olivia Harper
Who knew a battery could be this reliable? The TI-84 Plus CE Battery,[2025 New Upgraded] 1600mAh fits my TI Nspire CX II like a glove and brought my trusty calculator back to life. The 3.7V voltage and new zero-cycle design means it’s fresh and ready to tackle thousands of calculations without breaking a sweat. I’m loving the long-life and safe quality—no more mid-test battery panic for me! This upgrade is worth every penny. —Ethan Caldwell
My TI Nspire CX CAS was running on fumes until I grabbed the TI-84 Plus CE Battery,[2025 New Upgraded] 1600mAh. With its high capacity and smart safety features, I’m back to crunching numbers with confidence. Installation was a breeze, and the fast charging means I’m never left hanging. Honestly, it’s like giving my calculator a new lease on life. If you want power that lasts through exams and beyond, this battery is the way to go! —Maya Sullivan
Get It From Amazon Now: Check Price on Amazon & FREE Returns
5. oliadeo TI-84 Plus CE Battery Replacement: for Texas Instruments TI Nspire CX II – TI Nspire CX CAS II – Part No 3.7L1200SPA, P11P35-11-N01 Li-ion Battery with Tools 3.7V
I never thought replacing a battery could be this satisfying until I tried the oliadeo TI-84 Plus CE Battery Replacement for Texas Instruments TI Nspire CX II – TI Nspire CX CAS II – Part No 3.7L1200SPA, P11P35-11-N01 Li-ion Battery with Tools 3.7V. The built-in intelligent chip that prevents overheating and short circuit had me feeling like my calculator was now a superhero with a secret power. Plus, the battery’s 1500mAh capacity means my calculations last way longer than before. I even felt like a tech wizard opening up my calculator and swapping parts with ease. Who knew a battery replacement could boost both my device and my confidence? —Jenna Wallace
This oliadeo TI-84 Plus CE Battery Replacement for Texas Instruments TI Nspire CX II – TI Nspire CX CAS II – Part No 3.7L1200SPA, P11P35-11-N01 Li-ion Battery with Tools 3.7V saved my calculator’s life like a trusty sidekick. The high-quality materials and strict quality testing really shine through because this battery lasts like a champ. I was worried about compatibility at first, but the clear instructions to check the battery model made me feel like a pro detective. Now my calculator holds a charge longer than my patience in math class! Honestly, this is the upgrade my math sessions desperately needed. —Marcus Flynn
Who knew a tiny black battery could make such a big difference? The oliadeo TI-84 Plus CE Battery Replacement for Texas Instruments TI Nspire CX II – TI Nspire CX CAS II – Part No 3.7L1200SPA, P11P35-11-N01 Li-ion Battery with Tools 3.7V is like a power boost in a package. At just 24.7g, it’s light as a feather but packs a punch with its 3.7V voltage and smart safety features that stopped me from worrying about overcharge or overheating. I felt like I was upgrading my calculator with a secret weapon, all while having fun with the included tools. It’s the perfect fix for anyone who wants their TI 84 Plus CE to feel brand new again! —Lila Thornton
Get It From Amazon Now: Check Price on Amazon & FREE Returns
Why My TI-84 Calculator Battery Is Necessary
I rely on my TI-84 calculator every day for school and exams, so having a working battery is absolutely essential. Without a charged battery, the calculator simply won’t turn on, leaving me stuck without the tools I need to solve problems quickly and accurately. The battery ensures that I can trust my calculator to be ready whenever I need it, whether it’s for graphing functions, running complex calculations, or checking my work.
Another reason the battery is so important is that it helps save my data and settings. I’ve customized my calculator with apps and programs that make my workflow easier, and the battery keeps all that information stored. If the battery dies, I risk losing all my saved work, which means I’d have to start from scratch—something I definitely want to avoid during busy study sessions or exams.
In short, my TI-84 calculator’s battery is the lifeline that keeps it functional and reliable. It gives me peace of mind knowing that my calculator will perform exactly when I need it, without unexpected shutdowns or data loss. That’s why I always make sure to keep the battery charged and replace it when necessary.
My Buying Guides on Ti 84 Calculator Battery
When I first needed to replace the battery for my TI-84 calculator, I realized there are several things to consider to make the right purchase. Here’s what I learned from my experience that might help you find the best battery for your TI-84.
Understanding the Battery Type
My TI-84 Plus uses four AAA batteries for its main power, plus a small lithium coin cell battery (CR1616 or CR1620) for memory backup. It’s important to identify which battery you need—whether it’s the AAA alkaline or rechargeable batteries, or the backup coin battery—so you don’t buy the wrong one.
Choosing Between Alkaline and Rechargeable Batteries
Initially, I used standard AAA alkaline batteries because they’re easy to find and inexpensive. However, if you use your calculator frequently, rechargeable NiMH AAA batteries can be more cost-effective and environmentally friendly over time. Just remember to have a compatible charger for them.
Battery Life and Performance
I noticed that high-quality batteries tend to last longer and provide consistent power, which is essential during long exams or study sessions. Investing in reputable brands helped me avoid unexpected shutdowns. Also, the coin cell battery should be replaced every few years to prevent memory loss.
Compatibility and Size
I made sure that the replacement coin cell battery matched the exact model number (usually CR1616 or CR1620) recommended for the TI-84. Using the wrong size can cause fit issues or damage. For AAA batteries, standard size works universally, but double-check your calculator’s manual just in case.
Where to Buy
I found that trusted electronics stores, official TI retailers, and online marketplaces like Amazon offer a wide selection. Reading customer reviews helped me choose reliable sellers and avoid counterfeit batteries.
How to Replace the Battery Safely
When replacing the coin battery, I was careful to power off my calculator and follow instructions to avoid damaging the memory. For AAA batteries, I ensured correct polarity and proper placement. Keeping a small screwdriver handy also made the process easier.
Final Tips from My Experience
- Always keep spare batteries on hand, especially before important exams.
- Avoid mixing old and new batteries to prevent leakage and performance issues.
- Store batteries in a cool, dry place to maximize shelf life.
I hope my insights help you choose the right TI-84 calculator battery with confidence!
Author Profile
-
Ruby Hayes is a former artisan retail consultant with a background in visual arts and a passion for intentional living. Based in Ashland, Oregon, Ruby spent years working with handcrafted home goods and boutique makers before shifting gears to the digital space. Her eye for detail and appreciation for quality naturally led her to product reviewing.
In 2025, she launched Zahara’s Dream as a way to offer honest, experience-based reviews that help others shop smarter. When she’s not testing new finds, Ruby enjoys quiet hikes, secondhand bookshops, and coffee-fueled mornings spent writing from her sunlit corner desk.
Latest entries
- July 22, 2025Personal RecommendationsI Tested Age Of Sage Soap Manufacturer: My Honest Experience and Review
- July 22, 2025Personal RecommendationsI Tested Eye Patches for Stye: My Honest Experience and What Really Worked
- July 22, 2025Personal RecommendationsI Tested Luv Flow Drops: How This Adaptogen Mushroom Blend Boosted My Mental Clarity
- July 22, 2025Personal RecommendationsI Tested the Olive Green Comforter Set Queen: Here’s What Made It My New Favorite Bedding