The perfect backup battery for my TI-89 Titanium calculator.
"The transaction to order and receive this battery was very satisfying. I'll always know to contact Battery Junction in the future for my specialty battery needs."





The Maxell 303 battery is typically used as a watch battery replacement; however, the button-type battery is also compatible with calculators, medical instruments, cameras, office equipment, tram power supplies, and memory ICs and RTCs. This non-rechargeable power source is designed for use in long-drain devices and its silver oxide chemistry has been optimized to perform best with this type of electronic device. The Maxell 303 battery, also known as the SR44SW, provides a steady discharge current that maintains the battery's voltage throughout its lifespan. Unlike other button-type cells, like those with alkaline chemistry (LR), the Maxell 303 won't lower in performance until the battery is completely dead and at the end of its discharge life. In fact, alkaline and silver oxide button cell batteries are not interchangeable. When replacing your batteries, please make sure to stay with the same chemistry for optimal performance.
As the first company in Japan to successfully market button-type batteries, Maxell has become the go-to for powering small, specialty electronics. Over the years, the company has researched and developed a better silver oxide chemistry to keep these devices powered longer while also minimizing the batteries' effect on the environment. Please note that the Maxell 303 battery is sold in individual tear strips. When ordering in larger quantities, the button cells will be shipped in tear strips of five units, which are packaged in boxes of 100 (20 x tear strips of five.) We recommend placing an order in multiples of five. The Maxell 303, or SR44SW button-type battery, is the perfect choice for powering low-drain analog devices.
| Brand | Maxell |
| SKU | MAXELL-303 |
| MPN | MAXELL-303 |
| UPC | 025215731617 |
| Size | 303 / 357 / SR44 / SR44SW |
| Voltage | 1.55 |
| Battery Rechargeable | No |
| Capacity (mAh) | 165 |
| Chemistry | Silver Oxide |
| Shelf Life | 5 Years |
| Packaging | Tear Strip |
| QTY Per Package | 1 |
| California Residents | see Prop 65 WARNINGS |
| Size | 303 / 357 / SR44 / SR44SW |
| Voltage | 1.55 |
| Battery Rechargeable | No |
| Capacity (mAh) | 165 |
| Terminal Type | Pressure Contact |
| Integrated Charge Port | No |
| Max. Discharge Rate | 200 |
| Equivalent Types | 1107SO, 1131SOP, 13GA, 157, 303, 303/357, 357, 541, 76A, 76PX, 76S, A76, AG13, AWI A01, AWI M02, AWI S05, Citizen 280-08, Citizen 280-62, D303/357, D357, EPX76, KS35, KS76, LR44, PX76, S76, SG13, SP357, SR1154, SR1154SW, SR44, SR44W, Seiko SB-A9, Seiko SB-B9, Timex A, Timex J, V357 |
| Length | 0.213 in (5 mm) |
| Diameter | 0.457 in (12 mm) |
| Weight | 0.078 oz (2 g) |
| Shipping Weight | 0.01 lb |
| Packaging | Tear Strip |
| Warranty | Battery Junction Warranty |
| Return Policy | Return Policy |
Overall rating: 5.0 / 5 from 1 reviews.
Review topics: [].
"The transaction to order and receive this battery was very satisfying. I'll always know to contact Battery Junction in the future for my specialty battery needs."
Your cart is currently empty.
Start Shopping