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Home / CMOS / Motherboard Batteries / HP
HP CMOS Battery

HP Motherboard CMOS Battery Replacement

HP motherboards use a CR2032 CMOS battery. We supply the correct CMOS battery factory direct, with bulk and custom label for PC brands.

HP motherboards use a CR2032 CMOS battery. We manufacture the CR2032 cell ourselves and supply it factory-direct, with bulk pricing and OEM custom label for PC and retail programmes. Cells are produced to the original specification and can ship with your own branding on the cell and on the packaging.
3.0VVoltage
CR2032Common Cell
20mmDiameter
OEMPC Label
Get the CR2032 CMOS BatteryAll CMOS Batteries
Battery Type

Which CMOS battery does a HP use?

CR2032 battery

CR2032 Specifications

ModelCR2032
ChemistryLithium
Voltage3.0V
Diameter20mm
Thickness3.2mm
Capacity190mAh ~ 255mAh
Equivalent toCR2032 = 5004LC = ECR2032 = KCR2032 = DL2032

Capacity: 190mAh ~ 255mAh · Equivalent to CR2032 = 5004LC = ECR2032 = KCR2032 = DL2032. See the full cross-reference table.

Specs for reference — final values per OEM project.

Get CR2032 CMOS CellOEM for PC Brands
Holder Compatibility

Will a CR2025 or CR2016 fit a HP CR2032 holder?

All three cells share the same 20 mm diameter and the same 3V nominal voltage — only the thickness changes. A holder is a fixed height, so a cell that is too thin can sit loose and make intermittent contact.

CellDiameterThicknessCapacitySame 20 mm seat
CR203220mm3.2mm190mAh ~ 255mAhYes — 3.2 mm, the standard seat height
CR202520mm2.5mm130mAh ~ 185mAhSame 20 mm diameter, but only 2.5mm thick — check the holder height
CR201620mm1.6mm75mAh ~ 100mAhSame 20 mm diameter, but only 1.6mm thick — check the holder height

Every cell above is 20 mm across, so the diameter does not tell them apart — the CR2025 is 0.7 mm thinner than the CR2032, and the CR2016 is thinner again. Because the seat is a fixed height, a thinner cell may not be gripped firmly and contact can be unreliable. Match the cell to the seat your board actually has: read the marking on the old cell and the silkscreen beside the holder, then confirm the size before ordering.

More depth: CR2032 vs CR2025 vs CR2016 · choosing a coin cell for your PCB · cross-reference tool · CR2032 specs & bulk · CR2025 · CR2016 · CR2025 data sheet · full cross-reference table.

How-To

How to Replace a HP CMOS Battery

  1. Turn off the PC and unplug the mains power
  2. Ground yourself, then open the case to reach the motherboard
  3. Locate the coin-cell CMOS battery near the chipset or battery slot
  4. Release the metal clip and remove the old CR2032 cell
  5. Insert a fresh CR2032 with the + side up and re-seat the clip
  6. Boot the PC and reset the date and time in the BIOS
Laptop models may keep the CMOS cell on a short connector instead of a clip holder — unplug it gently and reseat the new cell.
CMOS Batteries

Which CMOS battery does my PC brand use?

Every brand on this list takes the same cell: a CR2032. The part number does not change — only where the holder sits and how you get to it. So if you service a mixed fleet, one box of CR2032 covers all of them; what you need per model is the access route below.

PC brandCMOS cellAccess route covered in the guideOpen
DellCR2032Holder location and disassembly sequence for Dell boards — the cell itself is unchanged.Dell guide →
HP <span style="font-size:12px;color:var(--ink-3);">(this page)</span>CR2032Holder location and disassembly sequence for HP boards — the cell itself is unchanged.you are here
ASUSCR2032Holder location and disassembly sequence for ASUS boards — the cell itself is unchanged.ASUS guide →
LenovoCR2032Holder location and disassembly sequence for Lenovo boards — the cell itself is unchanged.Lenovo guide →
MSICR2032Holder location and disassembly sequence for MSI boards — the cell itself is unchanged.MSI guide →

CR2032 Battery

The standard 3V lithium cell for motherboards and CMOS — specs, equivalents and bulk supply.

View CR2032 →

CMOS Battery Guide

Which cell to buy, how to test one properly, and why a CR2032 must never go where an ML2032 belongs.

Back to the CMOS hub →
Guide
Choosing a Coin Cell for Your PCB: Holder & Life
A design-side checklist for picking a coin cell: holder clearance, capacity budget, equivalent part numbers and shelf-life data.
→
FAQ

What do buyers ask about HP CMOS batteries?

What battery does a HP motherboard use?
Most HP desktops and laptops use a CR2032 3V lithium coin cell (20mm, 3.2mm).
How do I replace the CMOS battery on a HP PC?
Power off and unplug the PC, ground yourself, open the case, locate the coin-cell holder, release the clip, remove the old CR2032, insert a fresh cell, then boot and reset the BIOS clock.
Why does my HP PC reset the time?
A dead CMOS battery makes the clock reset and BIOS settings drop on boot. Replacing the CR2032 cell fixes it.
Which CMOS battery does an HP motherboard use?
An HP desktop board takes a CR2032 — a 20 × 3.2 mm, 3V primary lithium coin cell in a metal clip or plastic socket. Thin laptop and small-form-factor HP boards can take a CR2025 instead: same 20 mm diameter, 0.7 mm thinner, and a CR2032 will not fit that holder. Read the marking on the old cell before ordering.
Does my HP laptop use the same CMOS battery as an HP desktop?
The cell is the same CR2032, but the form differs. HP desktops carry it in a clip or socket on the board, while most HP laptops run the RTC battery on a two-wire lead — a coin cell heat-shrunk in plastic with a small plug. A bare coin cell cannot be substituted for the wired pack, so order the complete pack and match the plug and lead length to the original.
Why does my HP PC ask for the date and time on every boot?
That is the classic flat-cell symptom: the RTC lost its standby supply, so the clock resets to a default date and the BIOS settings drop. On an HP machine it usually shows as a 'CMOS checksum error' or 'CMOS Time and Date Not Set' message at boot. Replacing the CR2032 cell restores the clock and the settings.
How do I test the CMOS battery on an HP PC before replacing it?
Note the date, time and your BIOS settings, then shut the PC down and disconnect the mains lead (and the laptop charger on a notebook). Leave it without external power for ten minutes or more, boot straight into BIOS and compare. If the clock has reset or your settings are gone, the cell is the cause. Measured with a meter, 3.0–3.3 V is healthy and below 2.5 V means replace — but a cell can read a healthy open-circuit voltage and still fail under the RTC load, so the power-cut test is the reliable one.
My HP board is marked ML2032 — can I fit a CR2032?
No, never. The two cells are the same 20 × 3.2 mm size and both are 3V, but an ML2032 is rechargeable and the board is wired to trickle-charge it, while a CR2032 is a primary cell that must not be charged. Maxell states in the ML2032 datasheet that fitting a primary battery in a charging circuit can generate gas, short-circuit the cell internally and lead to leakage, overheating, explosion or fire. If the board holds an ML2032, fit an ML2032.

How do I buy CR2032 CMOS batteries in bulk?

Factory-direct CR2032 coin cells for motherboards, OEM & PC brand programs. Get a quote today.

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