Are CR2025 and CR2016 interchangeable?

[SanXavier]

If there are no special requirements for the product, CR2025 and CR2016 can be used interchangeably. The difference between CR2016 and CR2025 lies in the battery size, capacity, and usage duration. The thickness of CR2025 and CR2016 is different: Different thicknesses require different battery slots. The thickness of the CR2016 battery is 1.6mm; the thickness of the CR2025 battery is 2.5mm. The capacity of CR2025 and CR2016 is different: Different capacities meet the varying requirements of electronic products for battery capacity; the nominal capacity of the CR2016 battery is 75mAh; the nominal capacity of the CR2025 battery ranges from 140-170mAh.

[JosephFitz]

Last time I replaced my car key battery, I tried using a CR2016 instead of a CR2025, which caused the key to malfunction several times and I couldn't unlock the door. Later, when I opened it up, I saw that the CR2016 was nearly 1mm thinner, so the contacts couldn't reach, causing signal interruption. The thickness of these small batteries is crucial - the CR2016 is only 1.6mm thick while the CR2025 is 2.5mm, both with 20mm diameter and same voltage, but the performance difference is huge. After learning this lesson, I now only buy the original model specified in the manual to avoid the hassle of returns and wasted money. Especially in automotive applications like remote keys which relate to anti-theft functions, using wrong batteries can cause minor malfunctions or even damage the battery slot. So I always remind friends to check their device requirements first before purchasing.

[SanElla]

I'm someone who enjoys tinkering with household appliances and have replaced button batteries many times. CR2025 and CR2016 cannot be used interchangeably due to their thickness difference: the former is 2.5mm, while the latter is 1.6mm. I usually measure the old battery with calipers or check the device manual to confirm the size. Otherwise, forcing a CR2016 into a slot designed for CR2025 could cause the thinner battery to wobble and lead to poor contact, resulting in malfunction. Conversely, using a CR2025 in a CR2016 slot could damage internal components due to the thicker battery. For car remotes, unstable power supply affects the locking sensor. I recommend searching online for model images to compare thicknesses or bringing the old battery to the store for direct matching to ensure the one-touch start function works reliably.

[MadelineRose]

Never randomly replace different button batteries. I once saw a neighbor using a CR2016 in a CR2025 slot, causing the key to short-circuit, smoke, and nearly catch fire. The difference in thickness leads to unstable contact and risks arcing. CR2025 is 2.5mm thick while CR2016 is 1.6mm thick—using them interchangeably is a mismatch. In automotive devices like keys, this can damage circuits or even cause small fires. For safety, I insist on using the original specified model. Check the label or consult a brand store to prevent hazards.

[VanManuel]

Comparing CR2025 and CR2016, both models share the same diameter of 20mm and voltage of 3V, but their thicknesses (2.5mm vs 1.6mm) determine they are not interchangeable. If a device like a car remote key is designed for CR2025, replacing it with CR2016 would be too thin, causing poor contact and signal loss; conversely, CR2025 would be too thick to fit properly and might damage the structure. I've noticed that automotive parts often specify one battery model to match the spatial layout. In practice, selecting the exact battery ensures responsive remote operation and reduces the likelihood of malfunctions.

[McElijah]

Choosing Button Batteries from a Cost-Effective Perspective. CR2025 and CR2016 are similarly priced but differ significantly in size: 2.5mm thickness vs. 1.6mm. Mixing them may cause contact issues or device damage, leading to additional waste. For car keys, original batteries like CR2025 offer longer lifespan and stable output, avoiding frequent replacements and inconveniences. I recommend checking the manual and purchasing matching models online in bulk to ensure smooth remote functionality and protect the key's interior.