CR2032, BR2032, LiR2032 Battery Equivalents and Replacements
CR2032, BR2032 and LiR2032 are very popular button/coin cell batteries commonly used in toys, computers, calculators, medical equipment, remote controls, car keys, watches etc.
Main difference between CR2032, BR2032 and LiR2032 batteries is their chemistry and hence their features like nominal voltage, nominal capacity, discharge currents, operating temperature range etc.
Of these chemistries, most popular by far is lithium non-rechargeable CR2032 battery featuring long shelf life, wide temperature range, constant output voltage etc.
CR2032, BR2032 and LiR2032 Batteries Features and Specifications
CR2032, BR2032 and LiR2032 batteries are button/coin cell batteries featuring 20 mm diameter and 3.2 mm height - hence the '2032' part of their label.
Letters 'CR', 'BR' and 'LiR' specify their chemistry type.
CR2032 battery is the most common '2032' battery and its standard label is, of course, CR2032, but various manufacturers also use other labels as well, including: CR2032BP, DL2032, ECR2032, KCR2032, BR2032, LM2032, 5004LC, 5004LB, L14, SB-T15, EA2032C, EA-2032C, L2032, DJ2032, KL2032, E- CR2032, KECR2032, GPCR2032, KT-CR2032 etc.
CR2032 is 3V lithium non-rechargeable battery featuring Manganese dioxide as positive electrode (cathode), organic electrolyte and lithium as negative electrode (anode).
Typical CR2032 capacity is in the 210-230 mAh range, but it depends on the discharge rate. Typical discharge rate for CR2032 is in around 0.2 mA, with the maximum continuous drain current of ~3 mA and maximum pulse current of around 15 mA.
Nominal voltage is 3 volts, open circuit voltage of a new cell is 3.2-3.3 volts and cutoff voltage around 2 volts.
Operating temperature depends on the exact chemistry, but generally it is in the -4°F (-20°C) to +140°F (+60°C).
Shelf life of the CR2032 varies on the model, but models from reputable brands feature shelf life of 7-10+ years.
BR2032 battery is another non-rechargeable 3V lithium battery featuring Carbon monofluoride as positive electrode (cathode), organic electrolyte and lithium as negative electrode (anode).
BR2032 are not as common as CR2032 and the manufacturers that do make them, label them simply 'BR2032'.
BR2032 nominal capacity is 3 volts, with open circuit voltage of 3.1 volts and nominal capacity of 180-190 mAh.
BR2032 are known for having slightly lower initial voltage than CR2032, but their voltage over time is much more stable. Also, their self-discharge rate is extremely low, down or even lower than 0.5% per year at 140°F (60°C) and even less at the lower temperatures, making these batteries common choice for motherboards and some watches.
Operating temperature of BR2032 varies on the model, but generally it is between -13°F (-25°C; or even lower) and 185°F (85°C).
On the other hand, discharge currents of BR2032 batteries should be kept very low, with standard discharge current around 30 μA (0.03 mA).
LiR2032 batteries are rechargeable lithium 2032 batteries. Their nominal voltages depend on the exact chemistry type and are generally 3.0V, 3.2V and 3.6-3.7 volts.
While 3.0V and up to the point 3.2V batteries may directly be used to replace CR2032 and BR2032 batteries, LiR2032 batteries with 3.6-3.7 volts nominal voltage should be used instead of non-rechargeable CR2032 and BR2032 only if explicitly stated by the manufacturer of the device (watch, toy, remote control etc.) that is being powered by CR2032/BR2032 batteries that that device accepts both CR/BR and LiR 2032 batteries.
Otherwise, such voltage difference may damage the device.
Main disadvantages of LiR2032 batteries are lower capacity (35-50 mAh range) and higher self-discharge rate, but they can be charged up to or even more than 500 times, and can withstand much stronger discharge currents (30-40 mA normal, 80-100 mAh pulse).
However, due to the differences among the rechargeable LiR2032 batteries, before getting these batteries, be sure to check their actual specifications.
Long Story Short: CR2032 batteries are very popular button/coin cells, commonly used in car keys, remote controls, computer motherboards, watches etc.
For the most applications, CR2032 batteries from reputable brands are the best choice - go for 3.0V 210-230 mAh battery with the shelf life of 7 years or more.
For specially applications, BR2032 and LiR2032 batteries may be used, just be sure to read individual specifications, just in case.