Lithium CR2477 Battery - Equivalents and Replacements

sony cr2477Lithium CR2477 is non-rechargeable 3.0 volts manganese-dioxide lithium battery, labeled as 'CR2477', but also as DL2477, ECR2477, KCR2477, EB-CR2477, BR2477, LiR2477 etc.

CR2477 battery is used as watch battery, in remote controls, in toys, in medical equipment etc.

Lithium non-rechargeable 3.0 V CR2477 battery is known as the battery with the highest capacity of all lithium button/coin cell batteries.

CR2477 battery features 24 mm (0.945 inches) diameter and 7.7 mm (0.303 inches) height, while voltage and capacity depend on the exact chemistry, load and cutoff voltage of powered device.

CR2477 vs BR2477 vs LiR2477

Most common chemistry found at '2477' button/coin cell batteries is 'manganese-dioxide lithium' chemistry. These non-rechargeable batteries are most common '2477' batteries and are labeled as 'CR2477' batteries.

panasonic cr2477 1CR2477 batteries feature nominal voltage of 3.0 volts, cutoff voltage of 2.0 volts and the capacity in the 850-1000 mAh range.

Their shelf life is 3-7 years, with newer batteries developed in recent years feature shelf life of 10+ years with annual self-discharge rate of less than 1%.

Like all other manganese-dioxide lithium their operating temperature is between -22°F (-30°C) and 140°F (60°C), unless otherwise stated by their manufacturers (sometimes from -40°F/-40°C to 158°F/70°C). Nonetheless, room temperatures are optimal temperatures for both operation and storage.

panasonic br2477BR2477 batteries are 2477 batteries featuring carbon-monofluoride lithium chemistry.

Main advantages of 'BR' batteries in general is/was more stable output voltage, broader operating temperature range, long shelf life and similar. Also, 'BR' batteries feature somewhat lower nominal voltage and lower capacity.

With the advances in manganese-dioxide lithium chemistry, advantages of BR2477 batteries are almost canceled out, so most manufacturers are not even making BR2477 batteries.

Due to the very similar voltages, CR2477 and BR2477 batteries are interchangeable batteries.

Note: with advances in 'CR' chemistry come advances in 'BR' chemistry as well - for example, Panasonic BR2477 battery features nominal voltage of 3.0 volts (usually it is 2.8 volts for 'BR' batteries), 1000 mAh capacity (just like 'CR' chemistry) and can operate between -40°F (-40°C) and 257°F (125°C) - yes, we checked temperatures several times :)

But, while Panasonic CR2477 features continuous drain of 0.2 mA, Panasonic BR2477 battery features continuous drain of 'only' 0.03 mA - you win some, you lose some.

conrad lir2477LiR2477 batteries are rechargeable lithium 2477 batteries. Their nominal voltage depends on the used chemistry, and varies between 3.2 and 3.7 volts, with most common LiR2477 batteries featuring 3.6 volts.

For example, LiFePO4 (Lithium Iron Phosphate) batteries feature 3.2 - 3.3 volts/cell, while LiMn204 (Lithium Manganese Oxide), LiNiMnCoO2 (Lithium Manganese Nickel), LiCoO2 (Lithium Cobalt Oxide) and similar batteries feature 3.6-3.7 volts per cell.

LiR2477 batteries are not directly compatible with CR2477 batteries due to the voltage difference of 0.2 - 0.7 volts. While 0.2 volts is not critical for most devices, 0.7 volts difference can cause damage to the devices designed for CR2477 batteries.

For short: If you plan to power devices that were originally powered with CR2477 batteries with LiR2477 batteries, first check the documentation of the device in question - if it is clearly stated by the manufacturer that it can be powered with both CR2477 (3.0 volts!) and LiR2477 (3.6 - 3.7 volts!) than feel free to do so.

Most LiR2477 batteries feature capacity of 150-200 mAh with an average capacity of 180 mAh, which is less than one fifth of CR2477's capacity.

But, LiR2477 batteries can be recharged 500+ times, offering some 100+ time more electric energy than single CR2477 battery.

Note: LiR2477 batteries MUST be charged with lithium battery chargers intended for such batteries. Charging them with any other charger can cause thermal runaway - heat buildup, fire and maybe even explosion. Seriously!

CR2477 vs CR2450 - Lithium Button/Coin Cell Battery With the Highest Capacity?

varta cr2477For short: lithium button/coin cell battery with the highest capacity is CR2477 battery.

And now, the longer version ...

Manganese-dioxide lithium button/coin cell batteries with the highest capacity are batteries with the largest volume, and they are:

- CR2477: 850-1000 mAh,

- CR2450: 600-620 mAh,

- CR3032: 500-560 mAh,

- CR2354: 500-560 mAh,

- CR2430: 270-320 mAh, etc.

For example, one of the most popular lithium batteries, CR2032 battery, features nominal capacity of 'only' 210-230 mAh.

Following chart lists capacities of typical, high-capacity lithium non-rechargeable button cells from most popular/reputable brands:

Brand/Battery CR2430 CR2354 CR3032 CR2450 CR2477
Duracell 270 mAh - - 540 mAh -
Energizer 320 mAh
Datasheet (PDF)
- - 620 mAh
Datasheet (PDF)
-
Panasonic 285 mAh 560 mAh
Datasheet (PDF)
500 mAh
Datasheet (PDF)
620 mAh
Datasheet (PDF)
1000 mAh
Datasheet (PDF)
Renata 285 mAh
Datasheet (PDF)
- - 580 mAh
Datasheet (PDF)
950 mAh
Datasheet (PDF)
Sony 300 mAh
Datasheet (PDF)
- - 610 mAh
Datasheet (PDF)
1000 mAh
Datasheet (PDF)
Varta 300 mAh
Datasheet (PDF)
- - 620 mAh
Datasheet (PDF)
850 mAh

Of course, there are other brands as well that manufacture high-quality button/coin cell batteries, but these are most popular ones.

CR3032 and CR2354 batteries are not very common, but their capacity is approximately half of the CR2477 capacity.

CR2430 battery capacity is around 30% of CR2477 battery capacity.

Only CR2450 battery feature capacity that is somewhat close to the capacity of the CR2477 battery ~600 mAh vs ~1000 mAh.

So, as one can see, CR2477 battery features the highest capacity of all lithium button/coin cell batteries.


CR2477 Battery Safety

Most CR2477 models feature no mercury, cadmium or similar pollutants, but just like any other battery, CR2477 battery must be disposed properly.

LiR2477 batteries must be charged using chargers intended for such batteries or they can catch fire or even explode.

CR/BR/LiR2477 batteries are not small batteries and the danger of getting swallowed by the child or pet is not high, but nonetheless, keep them away from kids and pets.

But, if they get swallowed, call your local emergency services and ask for advice - these batteries are hard to swallow, but also hard to vomit ...


licb cr2477Long Story Short: CR2477 batteries are relatively large button cell batteries and although not manufactured by most brands, there are enough reputable brands and their 2477 batteries present at online shops than getting new CR2477 battery replacement should not be a problem.

Panasonic, Renata, Sony, or Varta batteries are reliable batteries with good capacity and long shelf life. Of course, there are other brands that manufacture good CR2477 batteries as well - just be sure to check reviews of their users.

In the case of low-discharge, high-temperature applications, Panasonic BR2477 battery is one of the recommended batteries.