A compact CMOS backup battery for keeping BIOS settings and the system clock when power is removed. Peace of mind for technicians and home builders who need a quick, reliable swap. Will the Eunicell CR2032 CMOS Battery fit your motherboard and simplify routine replacements?
⚡ At a Glance
- • Power Capacity: Full 3 volts nominal, approximately 210mAh capacity, 10-year shelf life
- • Best for: PC builders, repair technicians and anyone replacing CMOS batteries on compatible motherboards and embedded systems
- • Not ideal for: Devices that require soldered coin cells or non-connector battery replacements
A CR2032 lithium coin cell supplied pre-attached with wire leads and a Molex 2-pin connector. Designed to retain BIOS settings and system time on compatible motherboards and embedded systems.
Quick, Tool-Free Swap – thanks to the Molex 2-pin connector
A Molex 2-pin (51021-0200) connector is pre-attached to wire leads and mates with standard two-pin sockets used on many motherboards. The connector design removes the need for soldering and speeds the replacement process.
Fast installation reduces downtime and makes carrying a spare practical, especially for service technicians and hobbyists.
Reliable BIOS and Clock Retention – with a 3V CR2032 lithium cell
A CR2032 coin cell holds a nominal 3 volts and roughly 210mAh capacity, sufficient to supply standby power for BIOS memory and the real-time clock. Lithium chemistry maintains charge steadily during long periods of inactivity.
System settings and the clock remain stable during power-offs, avoiding time resets and configuration loss when a machine is unplugged.
Long-Term Spare Readiness – thanks to a 10-year shelf life
Manufacturer specifications indicate an approximate ten-year shelf life for the cell, meaning low self-discharge while stored. The pre-fitted connector keeps the spare ready for immediate use.
Keeping a spare on the shelf removes emergency scrambles for a replacement, useful for workshops and IT cupboards.
✨ The 4 Key Reasons for Eunicell CR2032 CMOS Battery
- Molex 2-pin connector – Replace CMOS battery without soldering on compatible motherboards
- Pre-attached wire leads – Simplifies installation and reduces risk of connector errors
- 3V, ~210mAh capacity – Keeps BIOS clock and settings powered during outages
- Long 10-year shelf life – Keep a spare at hand for up to ten years
📋 Technical Details at a Glance
- Battery Type: CR2032 lithium coin cell
- Chemistry: Lithium
- Nominal Voltage: 3V
- Capacity: Approximately 210mAh
- Connector: Molex 2-pin (51021-0200)
❓ Frequently Asked Questions
Q: Will this battery fit my motherboard?
A: Check your motherboard for a two-pin Molex-style socket and compare images and model details, as the battery is supplied with a Molex 2-pin (51021-0200) connector. If the board uses a soldered coin cell or a different connector type, this battery will not be a direct fit.
Q: How long can I store a spare before it needs replacing?
A: Shelf life is approximately 10 years, so a properly stored spare should remain ready for long-term use. Regular checks of stored spares are recommended for critical systems.
Q: Will this keep my BIOS settings when the PC is unplugged?
A: Yes, the CR2032 cell supplies standby power to retain BIOS settings and the system clock while the machine is powered down.
🏆 Our Verdict
Suitable for technicians, PC builders and anyone needing a ready-to-fit CMOS replacement for motherboards and embedded systems. The key advantage is a pre-attached CR2032 cell with a Molex 2-pin connector that enables quick, tool-free swaps and dependable BIOS retention. While cheaper formats exist, the convenience of a plug-and-play spare combined with a long shelf life makes it a sensible long-term solution.
