Hi-Capacity Equivalent of TADIRAN TL-5186 CMOS Battery - Long-Life

In this review the Hi-Capacity equivalent of the TL-5186 CMOS battery is examined for users who need a reliable, long-life coin battery for motherboards and embedded electronics. The bottom line: this battery is best for technicians and hobbyists who need a non-rechargeable 3.6 V power source with a small footprint and wide operating temperature range. It offers a straightforward replacement option with a 400 mAh capacity and thru-hole termination that simplifies PCB mounting, making it a practical choice when longevity and physical fit matter.

Key Features

• High capacity: The 400 mAh rating provides extended backup life compared with smaller coin cells, reducing the frequency of replacement.
• Robust voltage: The nominal 3.6 V output is appropriate for devices designed around TL Series voltage needs, keeping real-time clocks and CMOS memory stable.
• Thru-hole termination: The thru-hole lead style simplifies soldering to circuit boards and ensures a secure mechanical and electrical connection.
• Wide temperature tolerance: Rated from -55 to +85 C, it will operate across demanding environmental conditions for industrial and outdoor electronics.
• Compact dimensions: At 0.295 in height and 0.728 in diameter it fits standard TL Series coin/button sockets without adding bulk.

Who It's For

This battery is aimed at electronics technicians, system integrators and hobbyists who replace CMOS batteries on motherboards, embedded controllers, or other devices that require a 3.6 V primary cell. The thru-hole termination and familiar coin size make it a practical choice for users performing board-level repairs or building prototypes that need a long-life primary source.

Users who need rechargeable solutions, very high discharge currents, or alternative voltages should look elsewhere; this is a primary (non-rechargeable) lithium cell intended for backup and low-drain memory functions rather than power-hungry applications.

Pros & Cons

Pros

• Long service life from a 400 mAh capacity suited for low-drain backup roles.
• Consistent 3.6 V nominal output keeps CMOS and RTC circuits stable without voltage sag.
• Thru-hole termination provides a reliable soldered connection for board-level use.
• Wide operating temperature range supports industrial and outdoor deployments.

Cons

• As a primary cell it is non-rechargeable, so replacements are required when depleted.
• Limited to devices designed for this specific TL Series size and voltage; it is not a universal swap for all coin cells.

Specifications

Brand/Series	TL Series
Capacity	400 mAh
Chemical System	Lithium
Size / Type	Coin/Button, Primary (Non-Rechargeable)
Dimensions	0.295 in H x 0.728 in Dia.
Voltage, Nominal	3.6 V
Termination	Thru-Hole

Our Verdict

The Hi-Capacity equivalent of the TL-5186 is a dependable, value-oriented replacement for devices requiring a 3.6 V TL Series coin cell. Its 400 mAh capacity, thru-hole termination and wide temperature tolerance make it especially suitable for technicians and embedded projects that prioritize longevity and secure board mounting. Choose this over smaller coin cells when you need stable backup power for CMOS and RTC circuits.

Frequently Asked Questions

Is this battery rechargeable?
No, this is a primary (non-rechargeable) lithium coin cell and must be replaced when depleted.

What devices is it suitable for?
It is intended for motherboards, embedded controllers and other electronics that accept TL Series coin/button batteries and require a 3.6 V backup cell.

Can it handle extreme temperatures?
Yes, it is rated to operate between -55 and +85 C, making it suitable for many industrial and outdoor applications.