LR44 Lithium Battery Equivalents
From time to time, we are asked to help people find replacements for "LR44 lithium batteries", which is fairly easy - there is no such thing as a lithium LR44 battery.
And here is an explanation why not ...
Published: July 6, 2021.
LR44 Battery Voltage
LR44 battery features physical dimensions of 11.6 x 5.4 mm, alkaline chemistry, and a nominal voltage of 1.5 volts, with a cutoff voltage of ~0.9-1.0 volts. Other labels are also used, including LR1154, AG13, 76A, A76, etc.
SR44 battery features the same physical dimensions as LR44 battery, silver-oxide chemistry, and a nominal voltage of 1.55 volts, with a cutoff voltage of ~1.2 volts. Other labels are also used, including SR44W, SR44SW, SR1154, 157, 303, 357, SG13, S76, etc.
Thanks to the very similar voltages, LR44, and SR44 batteries are interchangeable batteries, within the limits of each chemistry, of course.
PR44 battery features the same physical dimensions as LR44 battery, zinc-air chemistry, and a nominal voltage of ~1.4 volts, with a cutoff voltage of ~1.0-1.1 volts. Other labels are also used, including 675, Blue Tab, ZA675, 7003ZD, etc.
PR44 battery is generally compatible with LR44 and SR44 batteries, despite somewhat smaller voltage. But, the PR44 battery features a moist electrolyte and as soon as it dries out, the battery dies, being discharged or not.
Hence, the PR44 battery is being used as a hearing aid battery and very rarely as LR44/SR44 battery replacement.
And here comes lithium-manganese chemistry ...
CR1130 battery is a non-rechargeable lithium battery featuring physical dimensions of 11.5 x 3.0 mm, a nominal voltage of 3.0 volts, and a cutoff voltage of 2.0 volts.
Some battery compartments intended for a single LR44/SR44 battery (11.6x5.4 mm) may accept two CR1130 batteries, but that should NOT be done due to the voltage difference:
- LR44/SR44: 1.5 - 1.55 volts,
- 2x CR1130: 6.0 volts.
Such voltage difference may damage any device easily.
For short: no, CR1130 battery CANNOT replace LR44/SR44 battery under no circumstances - unless You have some device that the manufacturer explicitly states that its single LR44/SR44 battery CAN be replaced with a pair of CR1130 batteries.
CR11108 battery is a non-rechargeable lithium battery featuring physical dimensions of 11.6 x 10.8 mm, a nominal voltage of 3.0 volts, and a cutoff voltage of 2.0 volts.
CR11108 battery is also known as CR-1/3N battery, but also as a 2LR44 battery, because two LR44 batteries stacked on top of each other feature the exact required height of 10.8 mm.
Hence, the CR11108 battery can be replaced with a pair of LR44 or a pair of SR44 batteries - of course, a lithium CR11108 battery is usually a preferred choice.
Long Story Short: There is no such thing as a lithium LR44 battery (or lithium SR44 battery). There are alkaline, silver oxide, and zinc-air 11.6 x 5.4 mm batteries, but there are no lithium 11.6 x 5.4 mm batteries.
So, if You find yourself looking for such a "lithium LR44/SR44 battery", check your original battery again. Just in case ...