Order Policies & Terms

Nohli calculators are custom built electronic devices assembled in small quantities using preowned calculators and additional electronic components. They are not new, factory sealed, or mass produced retail products.

Texas Instruments has discontinued the TI-84 Plus, so Nohli units come from a rotating pool of restored stock. Keypad print color, shell finish, and minor cosmetic markings may vary between batches and cannot be selected. Every eligible unit is still a TI-84 Plus base calculator.

Because the original calculators are used, units may show normal cosmetic wear, including scratches, marks, discoloration, or other signs of previous use. A unit may occasionally have a small screen or pixel imperfection that does not interfere with normal operation. Cosmetic wear that does not affect functionality is not considered a defect.

Each calculator requires significant time and labor to assemble, configure, and test. Every unit is individually tested before shipping.

Nohli calculators use custom hardware, custom software, WiFi connectivity, and remote AI processing. This technology is experimental and may not perform exactly the same in every situation.

Response quality, accuracy, processing time, connectivity, and battery life may vary. Batteries are not included with any Nohli calculator. Occasional troubleshooting, repeated attempts, software reconfiguration, or assistance from support may be required.

These devices should not be treated as traditional mass produced consumer electronics that are guaranteed to operate identically under every condition.

AI generated responses are not guaranteed to be completely accurate. Performance may vary depending on the subject, problem difficulty, image quality, lighting, camera positioning, WiFi stability, remote AI availability, and how clearly the question is entered or photographed.

Incorrect answers, incomplete explanations, slower responses, or the need to submit a question again are not automatically considered product defects. Buyers should independently verify important answers.

Orders normally require up to one week for assembly, configuration, testing, and fulfillment before shipping.

During periods of high order volume, fulfillment may require up to one and a half weeks. Shipping time begins only after the order has been completed and transferred to the carrier.

Requests for faster fulfillment do not guarantee that an order will be completed sooner.

Delivery dates displayed during checkout are estimates and are not guaranteed. Nohli is not responsible for delays caused by the shipping carrier, weather, customs, incorrect addresses, or other circumstances outside of our control.

The buyer is responsible for entering a complete and accurate shipping address. Address changes cannot be guaranteed after assembly or fulfillment has begun.

The calculator requires a stable WiFi connection. Most customers use a phone hotspot because many school, hotel, workplace, and public WiFi networks require a browser sign in page that the calculator cannot access.

The buyer is responsible for having access to a compatible WiFi connection or phone hotspot. Inability to connect to a restricted or unsupported network is not considered a product defect.

Batteries are not included with any Nohli calculator. Buyers must purchase compatible batteries separately before setup.

For expected battery performance, Nohli recommends Wenjoop Rechargeable AAA Batteries, 16 Pack, 1100 mAh High Capacity NiMH AAA Rechargeable Batteries, Long Lasting 1.2V Low Self Discharge High Performance Triple AAA Batteries.

A link to the recommended batteries is provided in the YouTube tutorial description.

Other compatible 1.2V AAA NiMH rechargeable batteries may work, but battery life and performance may vary. The Wenjoop batteries are recommended because they are the batteries used during testing.

Do not use 1.5V AAA batteries. Damage or malfunctions caused by incompatible voltage, leaking batteries, incorrect installation, or unsupported battery types are considered user caused damage and are not covered by the defect resolution policy.

Remove one battery when the calculator is not being used to fully disconnect power.

Expected continuous battery life is approximately two hours for the Camera Calculator and approximately ten hours for the Typing Calculator. These estimates are not guaranteed and may vary depending on battery condition, usage, WiFi activity, and device configuration.

A QR code linking to the setup tutorial is included inside the package. The tutorial explains how to install the required customer-supplied batteries, connect the calculator to WiFi, use the device, and complete the required setup.

Additional instructions may explain how to update the WiFi name, WiFi password, or API key.

The buyer must watch the full tutorial carefully before using the device or requesting technical support.

The buyer is responsible for purchasing and installing compatible batteries, connecting to supported WiFi, entering the correct network information, maintaining any required API configuration, following the provided tutorial, and avoiding unsupported changes.

Most setup problems can be resolved by carefully following the tutorial and cooperating with support.

Opening, rewiring, reprogramming, modifying, disassembling, or attempting to repair the device without written authorization may make the device ineligible for a return, replacement, or refund when the modification caused or contributed to the problem.

This does not limit any rights that cannot legally be waived.

Official support is provided through support@nohli.com.

Customers must contact support using the same email address entered during checkout and include the full name listed on the order.

Support is available only to the original purchaser and verified owner named on the order. A customer may not transfer support access to a friend, family member, or other third party by lending, giving away, reselling, or otherwise transferring the device. Nohli will not discuss an order, provide account or device support, or process a claim for anyone who cannot be verified as the original purchaser.

The Nohli Discord community may be used for general questions, but Discord messages are not considered official support requests unless Nohli specifically directs the customer to use Discord.

Support response times may vary. Nohli will make a reasonable effort to assist customers and resolve legitimate technical issues.

Customers must provide a real full name, a real email address, and a real reachable phone number when placing an order.

If Nohli believes the name, email address, or phone number provided at checkout is fake, inaccurate, or unusable, or if Nohli needs to contact the customer about the product or order and cannot reasonably reach them using the information provided, the order may be canceled.

This requirement helps prevent fulfillment problems, support delays, delivery issues, and orders placed with false or unreachable contact information.

Before purchasing, buyers are responsible for reviewing the complete product description, device limitations, battery requirements, WiFi requirements, product condition, fulfillment estimate, Shipping Policy, and Returns & Warranty page.

Buyers should contact support@nohli.com before purchasing if they are uncertain about compatibility, functionality, or setup requirements.

Nohli is not responsible for misuse of the device or for use that violates school rules, testing policies, institutional guidelines, or local regulations.

Any unauthorized use during an exam or assessment is solely the responsibility of the user.

Questions about compatibility, functionality, battery requirements, setup, or these policies should be sent to support@nohli.com before purchasing.

By completing a purchase, the buyer confirms that the calculator is custom built using a preowned device, is not factory new or mass produced, may show cosmetic wear, uses experimental technology, requires buyer setup and WiFi, may produce varying AI results, does not include batteries, and must be used with compatible batteries purchased separately by the buyer.

The buyer also agrees to review the separate Shipping Policy and Returns & Warranty page for shipping, return, refund, replacement, and warranty terms.