CR2430 Battery Equivalents and Replacements

Lithium 3.0 volts non-rechargeable CR2430 batteries are button/coin-cell type of batteries commonly used in watches, fitness wearable electronics, car keys, remote controllers, calculators, healthcare devices (glucose monitors, for example), dog collars, as a backup battery, and similar.

CR2430 battery is rather common, but it is often labeled using other labels. Also, the round 2430 battery can be found in other chemistries, even rechargeable ones, leading to some confusion among users.

Updated: September 5, 2023.

CR2430 Battery Features and Specifications

CR2430 batteries are non-rechargeable Lithium Manganese Dioxide (LiMnO₂) button/coin-cell batteries featuring physical dimensions of (D x H) 24.5 x 3.0 mm (~0.9646 x 0.1181 inches).

CR2430 batteries feature a nominal voltage of 3.0 volts, a cutoff voltage of 2.0 volts, and a nominal capacity of ~270-320 mAh - as usual with the batteries, an actual capacity depends on the battery age, storage temperature, drain conditions (current, temperature), and similar.

The standard discharge current of CR2430 batteries is ~0.2 mA, while the pulse current depends on the pulse length, but generally, it is in the 7-15 mA range.

Thanks to the Lithium Manganese Dioxide (LiMnO₂) chemistry, the CR2430 battery features a very low self-discharge rate (at room temperature), with most brands having a shelf life of 5-10 years - if the storage/discharge temperature is increased, the self-discharge rate is increased, too.

Standard labels of button/coin-cell 24.5x3.0 mm round batteries are CR2430 (IEC) and 5011LC (ANSI), but other labels are used as well, not just for CR2430 batteries, but also for other batteries of this size, but using other chemistries as well.

These labels include DL2430 battery, ECR2430 battery, KCR2430 battery, KECR2430 battery, BR2430 battery, KL2430 battery, LM2430 battery, ML2430 battery, etc.

CR2430 alternative batteries like DL2430, ECR2430, etc., are just "customized" CR2430 labels used by some battery brands (Duracell, Energizer, ...) - nonetheless, these batteries are standard CR2430 batteries.

 BR2430 vs. CR2430 Battery

BR2430 are non-rechargeable 24.5 x 3.0 mm batteries featuring Lithium Carbon Monofluoride chemistry.

BR2430 batteries feature a nominal voltage of 3.0 volts (2.8V older batteries), a cutoff voltage of 2.0-2.25 volts, and a nominal capacity somewhat smaller than the capacity of the CR2430 battery.

Also, BR2430 batteries feature lower discharge currents than CR2430 batteries.

But, BR2430 batteries feature a very low self-discharge rate, having a shelf life of 10+ years and a wider temperature operating range.

BR2430 batteries are used in low-drain devices/applications like memory backup batteries, CMOS batteries, and similar.

ML2430 vs. LiR2430 vs. CR2430 Battery

CR2430 battery is a non-rechargeable 3.0 volts battery, while ML2430 and LiR2430 batteries are rechargeable 24.5 x 3.0 mm batteries.

ML2430 battery features a positive electrode made of Lithium Manganese Oxide and a negative electrode made of Lithium Aluminum alloy.

ML2430 battery features a nominal voltage of 3.0 volts, an average discharge voltage of 2.5 volts, a cutoff voltage of 2.0 volts, and a charge voltage of ~3.2 volts.

The typical capacity of the ML2430 battery is ~100 mAh, with a standard continuous discharge current of ~0.5 mA, a maximum continuous discharge current of ~10 mA, and a maximum pulse current of ~20 mA.

The number of charging cycles varies, but generally, it can withstand at least several hundred charging/discharging cycles.

ML2430 batteries feature the same voltage as CR2430 batteries, better drain features in terms of maximum current, and a larger self-discharge rate.

However, these batteries should not be considered equivalents since devices that use ML2430 batteries often have built-in battery chargers - and charging a CR2430 battery can be dangerous.

For short, if your device uses an ML2430 battery, replace it with an ML2430 battery. If your device uses a CR2430 battery, it can be replaced with an ML2430 battery, but don't expect it to last a long time.

LiR2430 battery features lithium-ion chemistry, with a nominal voltage between 3.2 and 3.7 volts, depending on the actual chemistry.

Nominal capacity is in the 90-100 mAh range with maximum continuous discharge current up to 20 mA (0.2C).

Charging voltage depends on the battery chemistry, but for the 3.6-3.7V batteries, it should be kept to 4.2 volts or somewhat lower.

LiR2430 batteries may withstand 300-500 charging/discharging cycles using proper battery chargers, even when being discharged almost completely.

CR2430 and LiR2430 batteries should not be considered directly interchangeable unless explicitly stated by the manufacturer of the device in question - voltage difference is not large, but nonetheless, it can cause certain devices to malfunction, or it can even destroy sensitive devices.

CR2430 Battery Cross Reference Chart

The following cross-reference chart lists some of the most popular CR2430, ML2430, and LiR2430 batteries with their most important features and specifications:

As one can see, each battery chemistry has its own pros and cons, with Lithium Manganese Dioxide (LiMnO₂) being the most common one.

CR2430 Battery Safety Issues

Modern CR2430 batteries don't contain mercury, cadmium, lead, and other heavy and toxic metals.

However, if the CR2430 or any other similar battery gets swallowed by kids or pets, body fluids short-circuit the battery causing various electrolytic processes that are very dangerous, even lethal - that is why most CR and similar batteries come in 'child-proof' and similar packages.

Although CR2430 batteries are not small, this may happen - if it happens, contact the nearest emergency center ASAP and do as instructed.

Please, this is a serious warning and should be treated as such!

CR2430 vs. CR2450 Battery

Both CR2430 and CR2450 batteries are 3V non-rechargeable lithium batteries featuring very similar dimensions:

• CR2430 battery: 24.5 x 3.0 mm,
• CR2450 battery: 24.5 x 5.0 mm.

As one can see, both batteries feature the very same diameter (24.5 mm) but different heights (3.0 mm vs. 5.0 mm). Due to the larger volume, the CR2450 battery also features a larger capacity - 270-320 mAh (CR2430) vs. 550-620 mAh (CR2450).

So, can You replace the CR2430 battery with the CR2450 battery?

Generally, no, You can't replace the CR2430 battery with the CR2450 battery.

Although this 2mm difference in height doesn't sound much, most battery compartments designed for the CR2430 battery simply can't accept the CR2450 battery, or it will be damaged.

CR2430 vs. CR2032 Battery

Both CR2430 and CR2032 batteries are button cell lithium 3.0V batteries, featuring physical dimensions of:

• CR2430 battery: 24.5 x 3.0 mm,
• CR2032 battery: 20 x 3.2 mm.

Although both batteries feature very similar heights (3.0mm vs. 3.2mm), they differ in diameter (24.5mm vs. 20mm).

Theoretically, the CR2032 battery may fit into the battery compartment intended for the CR2430 battery, but the contacts would be loose.

Also, the CR2032 battery has a smaller capacity (200-225 mAh vs. 270-320 mAh).

So, if You have a CR2032 battery and You want to replace a CR2430 battery, don't replace the CR2430 battery with a CR2032 battery.

Lithium CR2340 Battery

There is no such thing as a "CR2340" battery - in most cases, people who were looking for a CR2430 battery accidentally typed CR2340 battery.

However, if You are looking for a coin/button cell battery with physical dimensions of ~23 x 4.0 mm, You are probably looking for a CR2335 (23 x 3.5 mm) or CR2330 (23 x 3.0 mm) battery (Amazon links, links open in the new windows).

CR2430 Batteries Frequently Asked Questions (FAQ)

Here are some of the most common Frequently Asked Questions (FAQ) about CR2430 and similar batteries.

Where to buy a CR2430 battery?

CR2430 batteries can be found in local hardware stores, office supplies stores, online shops, etc.

What is equivalent to CR2430? What battery can replace CR2430?

Batteries labeled as DL2430 battery, ECR2430 battery, KCR2430 battery, KECR2430 battery, and similar, which are non-rechargeable 3.0V lithium 24.5 x 3.0 mm button cell batteries, are actually CR2430 batteries, just differently labeled and can be used instead of CR2430 batteries.

Can I replace a CR2430 with a CR2032?

No, due to the size difference, the CR2430 battery cannot be replaced with the CR2032 battery.

Can I replace a CR2430 battery with a CR2450?

No, due to the size difference, the CR2430 battery cannot be replaced with the CR2450 battery.

Are all CR2430 batteries the same?

Generally, all CR2430 batteries based on Lithium Manganese Dioxide chemistry are compatible and can be used interchangeably.

However, coin cell 24.5 x 3.0 mm batteries based on other chemistries differ in voltage, capacity, and drain features and should NOT be used instead of CR2430 batteries unless explicitly stated by the device's manufacturer.

How to test the CR2430 battery?

Testing a CR2430 battery is rather simple - one can do it using an ordinary digital multimeter (analog multimeter/voltmeter can be used as well, but it is less accurate):

• Turn on the multimeter.
• Set the multimeter to the DC voltage setting (direct current). For the CR2430 battery, which is a 3V battery, you'll want to set the multimeter to a range that can read this voltage, usually marked as "5V," "10V," or "20V," depending on the multimeter's scale.
• Place the black probe (commonly the negative or COM probe) of the multimeter on the negative side of the battery. This is usually the flat side without any markings.
• Place the red probe (positive probe) on the positive side of the battery, which usually has a "+" sign or is the raised side of the battery.
• Read the voltage displayed on the multimeter.

If the reading is close to 3.0V (e.g., 2.8V to 3.0V), the battery is in good condition. If the reading is significantly lower (e.g., below 2.5V), it's an indication that the battery is getting weak and may need replacement soon. A reading below 2.0V means that the battery is practically fully discharged.

Note: Don't apply too much pressure while testing to avoid damaging the battery. Make sure you're testing in a dry environment to avoid short circuits.

Long Story Short: If You are looking for a non-rechargeable button/coin-cell 24.5 x 3.0 mm lithium battery, go for CR2430 batteries from reputable brands with good reviews.

Such batteries are tried and tested by countless users in many real-life situations, and they worked well.

Rechargeable 24.5 x 3.0 mm batteries are also present, but their use is rather specific.

Although CR2430 and rechargeable ML2430/LiR2430 batteries are interchangeable in certain situations, they may replace each other only if explicitly permitted by the device's manufacturer.

Remember, the CR2430 is a non-rechargeable battery, so the only option is to replace it if it's dead or weak. Please don't attempt to recharge it. Dispose of weak or dead batteries properly, as they can be hazardous to the environment.

Some of the most popular CR2430 models are (Amazon links, the links open in the new windows):

• Energizer CR2430 Lithium 3.0V Battery
• Renata CR2430 Lithium 3.0V Battery

For more up-to-date offers and prices, feel free to check the CR2430 Battery Amazon link (the link opens in the new window).