Batteries LR55

LR55

— the LR index denotes compact 1.5 V “coin” batteries made using alkaline technology. These are simpler and cheaper analogues of silver-oxide cells of the SR series (it is also “three hundredth”, a typical example is size 357, it is also SR44). LR batteries have a relatively low capacity, they are prone to a rapid voltage drop as they are discharged, and they do not handle high load currents well. On the other hand, such cells are noticeably cheaper than silver-oxide ones, and for devices with an even low energy consumption, they are the best option.

Specifically, LR54 batteries are 11.6mm in diameter and 2.1mm thick. They are also found under the marking V8GA, AG8, RW40, G8, GP191A; silver-oxide analogues — 381 (low discharge current) and 391 (high current).