When I put the batteries in my poket or bag, the batteries get hot. What is the cause?

If a metal necklace, hairpin, key chain, etc. is included with the battery, if the positive and negative electrodes of the battery are connected by metal for some reason, the battery will short-circuit and the temperature will rise to nearly 100 ° C. When it gets hot, take out the batteries immediately to avoid burns, cool them, put them in a plastic bag, etc., and dispose of them according to the instructions of your municipality.
To prevent short circuits during storage, we recommend that you bring unused batteries without removing the film at the time of purchase, or put them in a small plastic bag and store them alone.

How long will it last in the device?

How long you can put it in the device depends on the current consumption of the device, so please check the instruction manual of the device or contact the device manufacturer.

Do alkaline batteries and manganese batteries contain mercury?

Mercury is not used in our alkaline batteries and manganese batteries.

CR2032 and CR2025 look very similar, are they compatible?

The numbers 2032 and 2025 represent the size of the battery, the left two digits represent the outer diameter of the battery and the right two digits represent the thickness. If this number is not the same, the battery will not fit in the device, or even if it does, problems such as poor contact will occur, so there is no compatibility.

Can you tell me how to dispose of the coin-shaped CR battery? (For general users who are not businesses)

Insulate the terminals with tape, etc., and dispose of them according to the instructions of your municipality.
Used coin-shaped CR batteries can basically be disposed of as “non-burnable garbage”. However, some local governments carry out separate collection based on their own judgment, so please follow the instructions of each municipality regarding the disposal method.

For the correct disposal method of batteries, please refer to the contents related to button battery collection by the Battery Association of Japan .

Can you tell me how to dispose of coin cell batteries? (For general users who are not businesses)

Mixing this battery with other batteries or metal ones can cause the battery to short-circuit, deform, leak, overheat, or explode.
Insulate the (+) and (-) poles of each battery with insulating tape, and put them in the “button battery collection can” provided at your local electronics store, watch store, camera store, etc.

For the correct disposal method of batteries, please refer to the contents related to button battery collection by the Battery Association of Japan .

Can I buy a battery with a CR2032 terminal?

Batteries with welded terminals are sold only to equipment manufacturers as parts for incorporation into equipment and are not commercially available. Please contact the manufacturer of the device that contained the battery.

Are the batteries with different numbers different?

The number on the battery represents the size of the battery. It is not compatible because the size changes when the number changes. Please purchase batteries with the same number.
In addition, the model notation may differ for batteries made overseas. Please refer to the following for more information.

→ Model numbers and correspondence tables for button-type and coin-type batteries from each company