Description
The Energizer LR1/E90 is a 1.5V alkaline battery in a compact N-size cylindrical form, sold here in a 2-pack blister. Each battery measures approximately 12mm diameter by 30mm height, fitting devices that need a small, high-density power source where standard AA or AAA cells are too large.
LR1 batteries are commonly used in medical equipment (glucose meters, blood pressure monitors, digital thermometers), Bluetooth headsets, security alarm sensors, small LED torches, and specialist photography equipment that requires N-cell power. The alkaline chemistry delivers stable voltage across the discharge cycle, which matters for devices with sensitive electronic regulation or precision measurement circuits.
The LR1/E90 designation is interchangeable with other industry codes including N, 910A, AM5, UM-5, and MN9100, so the same physical battery fits devices specifying any of these labels. Energizer rates these cells for long shelf life when stored at room temperature, making them suitable for backup stock in medical kits or security systems where batteries may sit unused for months before being called into service.
Specification
| Weight (KG) |
0.02 |
| Width (mm) |
80 |
| Height (mm) |
12 |
| Depth (mm) |
120 |
| Battery Range |
Energizer Specialist |
| Cell Size |
LR1 |
| Cell Composition |
Alkaline |
Frequently Asked
What devices use LR1/E90 batteries?
LR1 batteries are used in compact electronics where AA or AAA cells are too large. Common applications include glucose meters, blood pressure monitors, digital thermometers, Bluetooth headsets, security alarm sensors, and small LED torches. Check your device manual to confirm compatibility.
Are LR1 and N batteries the same?
Yes. LR1, E90, N, 910A, AM5, UM-5 and MN9100 are different industry codes for the same physical battery size and voltage. Any device specifying one of these codes will accept Energizer LR1/E90 batteries.
How long do these batteries last?
Lifespan depends on the device and how frequently it's used. In low-drain devices like digital thermometers or backup alarm sensors, LR1 batteries can last many months. In higher-drain devices like Bluetooth headsets, expect shorter runtime and more frequent replacement.
Can these be used in medical devices?
Yes. LR1/E90 alkaline batteries are commonly specified for home medical equipment including glucose meters, blood pressure monitors and digital thermometers. The stable voltage output suits precision measurement circuits.