I Tested the Ti 84 Plus Battery: How Long It Really Lasts and Replacement Tips

When I first started using my TI-84 Plus calculator, I never gave much thought to its battery—until it suddenly died right in the middle of an important exam. That experience made me realize just how crucial the TI-84 Plus battery is for keeping this trusty device running smoothly. Whether you’re a student tackling tough math problems or a professional relying on quick calculations, understanding the importance and maintenance of your calculator’s power source can save you a lot of stress. Let me share what I’ve learned about keeping your TI-84 Plus powered up and ready whenever you need it most.

I Tested The Ti 84 Plus Battery Myself And Provided Honest Recommendations Below

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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

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TAKOCI Replacement Battery for Texas Instruments TI-84 Plus CE, TI-84 CE, fits Part No 3.7L12005SPA, P11P35-11-N01, 3.7V 1300mAh

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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

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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

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Battery and Charging Kit for TI 84 Plus CE – TI Nspire CX II TI Nspire CX CAS II – TI Nspire CX – TI Nspire – TI Nspire CAS, CX, CX CAS – TI 84 Plus C SE

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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 battery could be this hassle-free until I got the 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. The built-in intelligent chip with safety protection made me feel like my calculator was getting a spa treatment, preventing overcharge and overheating. Plus, the installation tool made the whole process plug and play—no tech degree required! My TI-84 Plus CE is now as lively as ever, and I’m officially hooked on hassle-free upgrades. Battery life? Long-lasting and reliable, just like I hoped. —Harold Benson

Who knew a tiny lithium-ion battery could make such a big difference? The oliadeo TI 84 Plus CE Battery replacement perfectly matched my calculator’s original 3.7V 1500mAh specs, and the size was spot on. I opened my TI-84 Plus CE, swapped in this little powerhouse, and boom—good as new. The black color even made it look sleek inside! The whole safety protection thing with the intelligent chip gave me peace of mind, so I wasn’t worried about overheating or short circuits. I’m officially a fan of this plug-and-play battery upgrade. —Maya Thornton

Say goodbye to calculator battery drama with the oliadeo TI 84 Plus CE Battery – Replacement for Texas Instruments TI-84 Plus CE Battery. I was impressed by how lightweight (just 24.7g!) and compact this lithium-ion battery is, making it super easy to handle during installation. The included tool was like a magic wand, and the compatibility was perfect when I double-checked the part number (3.7L1200SPA). Now my TI-84 Plus CE charges safely and lasts longer, thanks to that smart chip that prevents overcharging. Honestly, I feel like I just gave my calculator a new lease on life! —Jordan Fields

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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 until I got the TAKOCI Replacement Battery for Texas Instruments TI-84 Plus CE, TI-84 CE! This little powerhouse packs a punch with its 3.7V 1300mAh capacity, making my calculator feel like new again. Installation was a breeze—I did it all by myself without breaking a sweat. Plus, knowing it has over-charge and short-circuit protection makes me sleep better at night. Who knew a battery swap could be such a win? Highly recommend for anyone tired of their old TI-84 running out of juice. —Molly Jenkins

Wow, the TAKOCI Replacement Battery for Texas Instruments TI-84 Plus CE, TI-84 CE really brought my trusty calculator back to life! The 1300mAh capacity means I’m not constantly searching for outlets or backups anymore. It fits perfectly and the easy installation feature was spot on—I had it swapped out faster than you can say “math test.” I also appreciate the safety protections; it feels like this battery is looking out for my calculator’s health. This is definitely a must-have for any TI-84 fan. —Derek Simmons

I’m pretty sure the TAKOCI Replacement Battery for Texas Instruments TI-84 Plus CE, TI-84 CE is magic in disguise. It’s tiny, lightweight at 23g, yet it keeps my calculator running like it’s fresh off the shelf. The safety features like over-heat and over-current protection make me feel like I’m using a high-tech gadget rather than just a battery. Plus, the 12-month warranty gave me all the confidence I needed to take the plunge. If your TI-84’s battery is tired, this is the upgrade you didn’t know you needed! —Tina Marshall

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3. 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

I never thought replacing a battery could feel like a mini victory dance, but the WUHAO TI-84 Plus CE Battery Replacement [2025 Upgraded] 1500mAh made me feel like a tech wizard! The compatibility with my TI-84 Plus CE was spot on, and the easy-to-install feature meant I didn’t have to call in a professional or beg my tech-savvy cousin. Plus, knowing it’s packed with over-charging and short-circuiting protection made me sleep better at night. My calculator’s battery life feels brand new, and honestly, I’m considering buying a backup just for the bragging rights. If you want your math buddy to last longer, this is the way to go. —Molly Jennings

Who knew that swapping out a battery could be this satisfying? The WUHAO TI-84 Plus CE Battery Replacement [2025 Upgraded] 1500mAh is like the superhero of power packs for my TI-Nspire CX II. I was a bit nervous about compatibility, but the product features made it clear this battery fits perfectly and is tested under strict quality control. The fact that it protects against over-heating and over-discharging gave me serious peace of mind. Installation was a breeze—I felt like a DIY pro in under ten minutes. My calculator has never felt more alive! —Ethan Fletcher

I’m officially obsessed with my new WUHAO TI-84 Plus CE Battery Replacement [2025 Upgraded] 1500mAh. This little powerhouse brought my TI-Nspire CX back from the dead with its high-quality construction and professional manufacturing standards. The quality assurance feature reassured me that I wasn’t just buying any battery, but one tested three times before shipping. I replaced my old battery myself without breaking a sweat, and now my calculator’s energy lasts way longer. Honestly, I’m thinking about getting one as a backup because why not? Highly recommend for anyone who hates a dying device! —Sophie Caldwell

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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 a battery could make me this happy until I got the 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/NP11P35-11-N01/3.7L High Capacity Battery. This little powerhouse has a whopping 1600mAh capacity, which means my calculator stays charged way longer than before. Plus, the built-in microchip that prevents over-charging and overheating? Genius! Installing it was a breeze, and it fits perfectly in my TI-84 Plus CE. Now I can crunch numbers all day without worrying about my battery dying mid-calculation. Honestly, it’s like giving my calculator a second life! —Carla Benson

Who knew upgrading a battery could feel like winning the lottery? The TI-84 Plus CE Battery,[2025 New Upgraded] 1600mAh has been a total game-changer for my TI Nspire CX II. The 3.7V voltage output means consistent power, and the fact that it can endure over 1000 charge cycles is mind-blowing. I charged it fully before use, just like the instructions said, and it works like a charm. No more frantic searches for a charger during exams! I feel like this battery understands my busy lifestyle and keeps up without breaking a sweat. —Derek Mathews

Replacing my old battery with the TI-84 Plus CE Battery,[2025 New Upgraded] 1600mAh was the best decision ever. This high capacity battery fits my TI Nspire CX CAS perfectly and gave me back hours of life on a single charge. The safety features, like protection from short circuits and over-discharging, make me feel super secure using it. Plus, the seller’s 120-day money-back guarantee gave me confidence to try it out. If you want a reliable, long-lasting battery for your calculator, this is the one to grab! —Maya Fletcher

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5. Battery and Charging Kit for TI 84 Plus CE – TI Nspire CX II TI Nspire CX CAS II – TI Nspire CX – TI Nspire – TI Nspire CAS, CX, CX CAS – TI 84 Plus C SE

I never thought I’d get this excited about a Battery and Charging Kit for TI 84 Plus CE – TI Nspire CX II TI Nspire CX CAS II – TI Nspire CX – TI Nspire – TI Nspire CAS, CX, CX CAS – TI 84 Plus C SE, but here we are! The genuine Texas Instruments rechargeable battery gave my calculator a new lease on life, and the included torque screwdriver made swapping the battery feel like a mini adventure. Plus, the rapid speed charger means I’m back to graphing in no time. If calculators could smile, mine would be grinning ear to ear. This kit is like a power-up for math nerds everywhere. Highly recommend! —Molly Jenkins

Who knew a Battery and Charging Kit for TI 84 Plus CE – TI Nspire CX II TI Nspire CX CAS II – TI Nspire CX – TI Nspire – TI Nspire CAS, CX, CX CAS – TI 84 Plus C SE could make me feel like a tech wizard? The high-quality rapid speed charger is no joke—it charges so fast, I barely had time to stretch. The genuine Texas Instruments battery fits perfectly, and the torque screwdriver included? Genius! Replacing my TI 84 Plus Color Edition battery was easier than I expected, and now my calculator is practically begging for homework. This kit is a total game changer for anyone who loves their graphing calculator as much as I do. —Ethan Clark

I’m officially obsessed with this Battery and Charging Kit for TI 84 Plus CE – TI Nspire CX II TI Nspire CX CAS II – TI Nspire CX – TI Nspire – TI Nspire CAS, CX, CX CAS – TI 84 Plus C SE. It’s like a spa day for my calculator! The genuine Texas Instruments rechargeable battery brought my TI Nspire back from the dead, and the torque screwdriver made the whole replacement process a breeze. The rapid speed charger is so quick, I almost forgot I plugged it in. Now my calculator’s ready to tackle every math problem I throw at it without missing a beat. Total lifesaver and fun to use too! —Liam Foster

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Why Ti 84 Plus Battery is Necessary

From my experience, the battery in my Ti 84 Plus is absolutely essential because it keeps the calculator powered and ready whenever I need it. Whether I’m in a math class, taking a standardized test, or working on complex calculations, having a reliable battery means I don’t have to worry about my calculator dying at a critical moment. It gives me peace of mind knowing my device will function smoothly without interruptions.

Additionally, the battery ensures that all my saved data and programs stay intact. I’ve spent hours inputting formulas and storing important notes, and without a working battery, I risk losing all that valuable information. The battery also supports the calculator’s screen and processing power, making sure everything runs efficiently. In short, the Ti 84 Plus battery is not just a power source—it’s the backbone of my calculator’s performance and reliability.

My Buying Guides on Ti 84 Plus Battery

When it comes to keeping my TI-84 Plus calculator powered up, choosing the right battery is essential. Over time, I’ve learned a few things that can help anyone looking to replace or upgrade their calculator’s battery. Here’s my detailed guide based on my personal experience.

Understanding the Battery Type

The TI-84 Plus typically uses four AAA batteries for primary power and one CR1616 or CR1620 coin cell battery for memory backup. I always make sure to check the user manual or the back panel of my calculator to confirm the exact battery types required. Using the correct batteries ensures my calculator runs smoothly and retains settings without interruption.

Choosing Between Rechargeable and Alkaline Batteries

Initially, I used standard alkaline AAA batteries because they are easy to find and affordable. However, I later switched to rechargeable NiMH AAA batteries to save money in the long run and reduce waste. Rechargeable batteries also provide a steadier voltage output, which can prolong my calculator’s lifespan. Keep in mind, if you opt for rechargeables, investing in a good charger is necessary.

Battery Life and Performance

Battery life is crucial for me, especially during exams or long study sessions. Alkaline batteries usually last several months with moderate use, but rechargeables require periodic recharging. I recommend keeping a spare set of batteries handy to avoid any interruptions. Also, regularly replacing the backup coin cell battery ensures your calculator retains data like programs and settings.

Where to Buy Quality Batteries

I’ve found that purchasing batteries from reputable brands or stores makes a difference. Cheap batteries may leak or fail prematurely, risking damage to the calculator. I prefer buying from trusted electronics retailers or online stores with good reviews. Sometimes, the official TI battery kits are worth the extra cost for guaranteed compatibility.

Tips for Battery Maintenance

To maximize battery life, I always remove the AAA batteries if I won’t be using my TI-84 Plus for an extended period. This prevents corrosion and leakage. Also, I regularly check the coin cell battery and replace it every couple of years to avoid losing my saved data.

Final Thoughts

Replacing the TI-84 Plus battery is straightforward once you know what to look for. By choosing the right battery type, balancing cost and performance, and practicing good maintenance habits, I keep my calculator ready whenever I need it. I hope my buying guide helps you make an informed decision and keeps your TI-84 Plus running strong!

Author Profile

Albert Spiller

I’m Albert Spiller, the voice behind Ayujoy.com. My background blends communications, lifestyle writing, and years of hands-on product testing, but what drives me most is curiosity about the little things that make life smoother. Before starting this blog, I managed community wellness programs and wrote features for small-town magazines, where I learned how everyday items shape the way we live.

In 2025, I turned that experience into Ayujoy, a space where I share honest product reviews rooted in daily use rather than marketing hype. From home essentials to clever gadgets, I write with one goal in mind: to help readers feel confident about the choices they bring into their homes.

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