25 Products
KEYPOWER
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Keypower: understand the range before choosing
Keypower is treated here as a small-battery range rather than a verified manufacturer history. The selection contains 29 battery or display entries, with 3V lithium CR coin cells, 1.5V alkaline and 1.55V silver-oxide button cells, plus compact 12V 23A and 27A batteries. These products may serve key fobs and other small devices, but exact code, voltage, chemistry, dimensions and terminal orientation must all match.
AutoMotoPart currently lists 29 Keypower items. The largest Keypower groups are 29 office supplies entries. Keypower totals can change, so a category count is orientation rather than proof that a particular reference suits a vehicle, workplace or job. The exact Keypower listing, its current technical information and the item in front of you must agree.
What the Keypower page actually covers
| Product group in this range | Current entries | Selection focus |
|---|---|---|
| Office Supplies | 29 | Match 189 code, 1.5V alkaline chemistry, diameter, thickness, polarity and device requirement. |
Lithium appears in 20 titles, alkaline in five and silver oxide in two. Nine CR references occur both singly and in ten-cell boxes, creating nearby titles that differ mainly by pack format. The two stands are merchandise equipment, not battery types. Keep reference and quantity separate so CR1220 is not confused with CR1225 or a ten-pack with a single replacement.
Build a reliable shortlist
Battery codes encode a physical and electrical specification, but device instructions remain decisive. Read the old cell under good light and clean enough to see the entire marking. If corrosion or an earlier incorrect battery obscures it, use the device manual or manufacturer support rather than guessing from the compartment diameter.
| Check | Why it matters | Useful evidence |
|---|---|---|
| Exact code | One changed digit can mean different thickness, diameter, chemistry or voltage | Device manual and complete marking on a known-correct cell |
| Voltage | A 1.5V, 1.55V, 3V or 12V source can affect or damage the device differently | Rated device input and battery label |
| Chemistry | Lithium, alkaline and silver oxide have different discharge and storage behaviour | Exact supported chemistry, not a loose cross-reference |
| Dimensions | A thinner cell may lose contact and a thicker cell can damage the holder | Published diameter and thickness for the code |
| Polarity | Reversed installation can prevent operation or harm circuitry | Holder symbols and orientation recorded before removal |
| Pack integrity | Loose cells can short, leak or be swallowed | Sealed packaging, protected terminals and secure storage |
Avoid stacking two lower-voltage cells to imitate a thicker or higher-voltage battery unless the device was designed for that arrangement. Do not use foil, bent contacts or spacers to make an incorrect cell reach the terminals. Those adaptations can short the cell or damage the holder.
Reading CR lithium coin-cell codes
CR cells on this page are nominal 3V lithium products. The code distinguishes size: CR2016, CR2025 and CR2032 all belong to the 20mm family but use different thicknesses, while CR1216, CR1632, CR2430 and CR2450 belong to other dimensions. Capacity and contact pressure change with size, so a thinner cell that appears to work briefly is not an appropriate substitute.
Keep the old cell isolated once removed and compare both faces of the new one. Insert it without scraping, puncturing or bending the casing. Finger grease and dirt can impair small contacts, so handle by the edge where practical and clean only by the device method. If the fob still fails, test the battery and diagnose buttons, solder joints, antenna, synchronisation or vehicle issues rather than stacking another cell.
Alkaline, silver oxide and compact 12V batteries
The 189, 625A and A76 entries are 1.5V alkaline formats, while 386 and 391 are 1.55V silver-oxide references. Similar button shapes can have several historical equivalent numbers, but chemistry and discharge curve matter in watches, instruments and transmitters. Use only equivalents explicitly supported by the device information.
The 23A and 27A entries are compact 12V batteries often used in small radio transmitters and remotes. Their cylindrical stacked-cell form, length and diameter differ from flat coin cells and from one another. Check the spring or flat contacts and polarity. Do not attempt to dismantle, recharge or substitute a collection of loose button cells for these assembled batteries.
Replacing a key-fob battery without damage
Check whether the mechanical key must be removed and identify the correct case-release point. Use a supported non-damaging tool and protect the circuit board from static, moisture and prying force. Photograph the cell orientation and clip arrangement before lifting it. Do not lever against a fragile component or pull a welded tab from a battery that is not intended for user replacement.
Inspect the seal and mating surfaces before closing the fob. A pinched seal can admit moisture, while a loose case may release the battery. Test lock, unlock and any other permitted function with the spare key available and without locking the working key inside the vehicle. Some vehicles require synchronisation after power loss; follow their procedure rather than repeatedly cycling the battery.
Ingestion, short-circuit and storage safety
UK product-safety guidance warns that button and coin batteries can cause severe internal injury when swallowed, even when a child does not choke. Keep them inaccessible to children and pets, secure device compartments and account for every cell when opening a multi-pack. A used battery may still retain enough energy to cause injury, so it needs the same controlled storage as a new one.
Prevent terminals from touching metal objects or other batteries in a way that creates a circuit. Heat, swelling, leakage, odour or damage are reasons to isolate the cell safely and seek appropriate disposal guidance. Never heat, crush, puncture, solder directly to or recharge a primary Keypower cell. If ingestion is suspected, treat it as an emergency and follow current NHS or emergency-service advice without inducing vomiting.
Testing, displays and battery recycling
A multimeter reading without load can help compare cells but does not prove capacity or device compatibility. Use equipment and a test method suitable for the small battery, avoiding probe slips that bridge the faces. If several fresh cells fail quickly, investigate standby current, water ingress, stuck buttons or a device fault rather than assuming every pack is depleted.
Display stands should hold unopened products securely with codes visible and stock rotated, away from children and heat. Do not refill hooks with loose cells or damaged blister packs. Collect spent batteries in a suitable non-conductive arrangement and take them promptly to a battery recycling point. Never mix a leaking cell casually with other waste where people may handle it.
From identification to a checked result
| Stage | Good practice for this range | Mistake to avoid |
|---|---|---|
| Identify | Read the device requirement and complete battery code | Choosing by diameter, brand or old cross-reference alone |
| Prepare | Work cleanly, record polarity and keep children and metal objects away | Opening a multi-pack where cells can scatter |
| Remove | Release the holder by its method without bending contacts or damaging seals | Shorting the battery with a metal tool |
| Fit | Match chemistry, voltage, dimensions and polarity, then close securely | Stacking, spacing or forcing an incorrect cell |
| Finish | Test the device, secure the old cell and recycle it promptly | Leaving a used battery loose in the vehicle or household waste |
Record the exact Keypower code and replacement date in the device or vehicle notes. Store unopened spares in original packaging. If a battery is removed for comparison, keep its positive and negative faces protected until it reaches the recycling point.
Reading real Keypower references
The Keypower names below are examples from the current range and show why the complete description matters. They are not universal Keypower recommendations and should not be treated as a fitment list. Within Keypower, a shared family word can conceal a different dimension, connector, material, pack format, operating condition or installation side.
| Example listing | What to verify beyond the name |
|---|---|
| Coin Cell Battery 189 - Alkaline 1.5V | Complete battery code, voltage, chemistry, diameter, thickness and polarity |
| Coin Cell Battery 386 - Silver Oxide 1.55V | Device requirement, holder type, case-opening method and seal condition |
| Coin Cell Battery 625A - Alkaline 1.5V | Single versus box quantity, packaging integrity, storage and ingestion controls |
| Coin Cell Battery CR1216 - Lithium 3V | Fob function, synchronisation procedure, used-cell isolation and recycling |
| Key Power Coin Cell Battery 23A - Alkaline 12V - Box of 10 | Complete battery code, voltage, chemistry, diameter, thickness and polarity |
| Key Power Coin Cell Battery 27A - Alkaline 12V - Box of 10 | Device requirement, holder type, case-opening method and seal condition |
| Coin Cell Battery 391 - Silver Oxide 1.55V | Single versus box quantity, packaging integrity, storage and ingestion controls |
| Key Power Coin Cell Battery A76 - Alkaline 1.5V - Box of 10 | Fob function, synchronisation procedure, used-cell isolation and recycling |
The sample list contains many neighbouring CR codes and both single and ten-cell packs, plus 1.5V, 1.55V and 12V products. Keep the complete Keypower reference visible. A one-character or one-digit difference can describe a different battery.
Common errors around Keypower products
- Replacing a Keypower cell from diameter without checking the complete code.
- Substituting lithium, alkaline or silver oxide because the battery fits physically.
- Reversing polarity or bending the device contact to reach a thin cell.
- Stacking cells or using foil to imitate another battery size.
- Treating 23A and 27A 12V batteries as ordinary flat coin cells.
- Leaving new or used batteries loose where children can reach them.
- Testing by bridging the battery faces with a metal object.
- Putting spent coin or button batteries into household rubbish.
Keypower questions and answers
Q: Is Keypower a verified manufacturer history page?
A: No. It is treated here as a small-battery range because a reliable standalone brand history was not verified.
Q: Can CR2016 replace CR2032?
A: No. They share nominal diameter but differ in thickness and capacity, so use the exact device code.
Q: Are all CR batteries 3V?
A: The represented CR lithium cells are labelled 3V, but the complete code and device requirement still control selection.
Q: Can alkaline replace silver oxide?
A: Only where the device explicitly supports that equivalent chemistry and voltage; physical fit is not enough.
Q: What are 23A and 27A batteries?
A: They are distinct compact 12V formats used in some remotes and transmitters, not ordinary flat 3V coin cells.
Q: How do I find the key-fob battery code?
A: Read the complete marking on a known-correct cell and confirm it in the fob or vehicle instructions.
Q: Does polarity matter?
A: Yes. Install the cell exactly as the holder symbols and recorded original orientation show.
Q: Can a primary coin cell be recharged?
A: No. Do not recharge, heat, puncture or dismantle these replacement cells.
Q: Why can button batteries be dangerous?
A: If swallowed they can cause severe internal chemical burns, so secure storage and urgent emergency action are essential.
Q: What if a child may have swallowed one?
A: Treat it as an emergency and follow current NHS or emergency-service advice immediately; do not induce vomiting.
Q: Can used batteries go in household rubbish?
A: No. Store them securely and take them promptly to an appropriate battery recycling point.
Q: Why does a new fob battery fail quickly?
A: Check correct code, contact condition, water ingress, stuck buttons, standby current and vehicle or fob faults.