Lithium CR1620 Battery - Replacements and Equivalents
CR1620 battery is a lithium non-rechargeable button/coin cell battery, often used in car keys, digital watches, remote controllers, credit-card size devices, micro-LED flashlights, toys, as CMOS/motherboard battery, and similar.
CR1620 battery is manufactured by practically all of the most popular and reputable battery brands and finding the new one should not be a problem.
However, not all manufacturers use the same label for their CR1620 batteries, leading to some confusion among the users.
Published: January 8, 2021.
CR1620 Battery Features and Specifications
CR1620 battery is a button/coin cell featuring physical dimensions of (DxH) 16.0 x 2.0 mm (~0.62992 x 0.78740 inches), a nominal voltage of 3.0 volts, cutoff voltage of 2.0 volts, and a nominal capacity of 65-80 mAh, although nominal capacity depends very much on the battery age, discharge rate, actual cutoff voltage of the powered device and similar.
The standard discharge rate of the CR1620 battery is usually ~0.1 mA, with a maximum discharge rate of ~1.0 mA - these values differ between manufacturers, but not much. However, any increase in discharge rate leads to a decrease in the actual capacity of the battery.
CR1620 battery is a non-rechargeable manganese-dioxide lithium battery, with most models featuring a self-discharge rate at room temperature of only 1-2% per year and with premium models having a discharge rate of 1% or less, making them suitable as a memory battery in various devices. However, if the temperature of the battery is increased, so is the self-discharge rate increased.
The common label of button/coin cell 16.0 x 2.0 mm battery is CR1620 (IEC standard) and 5009L (ANSI standard), but other labels are used as well, including ECR1620, DL1620, VCR1620, etc.
But, just in case, most manufacturers almost always use the CR1620 label as well.
The following comparison chart lists some of the most popular CR1620 batteries, with their most important features and specifications:
|Battery||Nominal Capacity||Operating Temperature||Self-Discharge Rate||Standard Discharge Current||Maximum Continuous Current||Maximum Pulse Current||Datasheet|
|Energizer CR1620||81 mAh (47 kΩ, 21°C, down to 2V)||-30 +60°C||~1%||0.06 mA||-||6.5 mA (400 Ω, 2 sec)||Energizer CR1620|
|Maxell CR1620||80 mAh||-20°C +85°C||-||0.1 mA||-||~6 mA (300 Ω, 5 sec)||Maxell CR1620|
|Panasonic CR1620||75 mAh (30 kΩ, 20°C, down to 2V)||-30°C +85°C||-||0.1 mA||-||-||Panasonic CR1620|
|Renata CR1620||68 mAh (30 kΩ, 23°C, down to 2V)||-40°C +85°C||<1%||0.1 mA||1.0 mA||-||Renata CR1620|
|Varta CR1620||70 mAh (20 kΩ, 20°C, down to 2V)||-20°C +70°C||<1%||-||-||-||Varta CR1620|
When looking for a new CR1620 battery always check the expiration date (best before) and it should be well ahead of the current date (at least 7-8 years).
BR1620 vs LiR1620 vs ML1620 vs CR1620 Battery
BR1620, LiR1620, and ML1620 batteries are very rare batteries and are not commonly used in everyday situations.
BR1620 battery is a non-rechargeable carbon-monofluoride lithium battery, it features somewhat lower capacity and lower drain current than the CR1620 battery, but it has a very low discharge rate and wider temperature range. The nominal voltage of the BR1620 battery is 2.8-3.0 volts and the cutoff voltage is 2.0-2.25 volts, depending on the exact chemistry.
LiR1620 battery is a rechargeable lithium battery, featuring lower capacity than the CR1620 battery, but can be recharged many times. Also, its nominal voltage is 3.6-3.7 volts and not all devices designed for the CR1620 battery support the use of the LiR1620 battery. The self-discharge rate of the LiR1620 battery is up to 5% per month.
ML1620 battery is a rechargeable lithium manganese-dioxide battery, with a nominal voltage of 3.0 volts and can be used instead of a CR1620 battery. However, it is used rarely due to the lower capacity, stronger self-discharge rate, etc.
For short, if You are looking for a button/coin 16.0 x 2.0 mm battery, go for a CR1620 battery.
CR1616 vs CR1620 Battery
CR1616 and CR1620 are both non-rechargeable manganese-dioxide lithium batteries that have the same diameter of 16.0 mm, but they differ in height and thus capacity and other features like drain currents and similar:
- CR1616 battery: 16.0 x 1.6 mm, 50-55 mAh,
- CR1620 battery: 16.0 x 2.0 mm, 65-80 mAh.
While most battery compartments that can accept CR1620 battery can also accept CR1616 battery, it is not recommended to replace a CR1620 battery with a CR1616 battery due to the lower capacity and somewhat lower maximum drain/pulse currents that can cause the device to malfunction.
CR1620 Safety Issues
Like all similar small and shiny objects (other button/coin cell batteries included), CR1620 batteries can be swallowed by kids and pets - that is why these batteries come in so-called 'pets-safe' and 'kids-safe' packages.
Although CR1620 batteries don't contain mercury, cadmium, lead, or any other toxic heavy metals and similar pollutants, they are very dangerous when swallowed - if swallowed, they can cause chemical burns and physical damage to internal organs.
If CR1620 batteries (or any similar battery) get swallowed, immediately contact the nearest emergency center (or doctor), explain what happened, and act according to their instructions.
Long Story Short: If You are looking for a non-rechargeable 3.0 volts 16.0 x 2.0 mm battery, go for a CR1620 battery from reputable brands.
Such batteries have a long shelf life, low-self discharge rate, and are very reliable batteries.