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Small round lithium CMOS battery in plastic wrap

DBTLAP

DBTLAP CMOS Battery for ASUS X501A X501U

SKU CH-T7HJ-6C2DS

Replacement lithium CMOS RTC BIOS battery for ASUS X501A and X501U laptop motherboards, tested before shipping

  • Battery TypeLithium
  • Compatible with ASUS X501A and X501U models
  • Lithium chemistry provides reliable RTC power
  • Tested before shipping for dependable operation
  • Replaces faulty or cracked CMOS batteries
  • Package includes one CMOS BIOS battery

Compatible ASUS Models

This DBTLAP CMOS battery is a direct replacement for the real-time clock module in ASUS X501A and X501U laptops. It restores BIOS settings retention and system timekeeping when the original cell is depleted. The lithium coin cell is tested before shipping to ensure reliable operation upon installation. It is designed specifically for laptop motherboards, not main laptop power packs.

Lithium Coin Cell Constraints

The lithium chemistry provides stable low-current output over several years but cannot be recharged by the system. Voltage drops gradually until BIOS data is lost, requiring a full swap rather than a top-up. Polarity and physical dimensions must match the motherboard holder exactly; forced insertion can damage the socket. No soldering is needed if the original used a standard clip-in holder.

Capacity and Service Life

A fresh cell typically maintains CMOS settings for multiple years under normal standby conditions. High ambient temperatures or frequent mains disconnection shorten the effective lifespan. When the system clock resets on every cold boot, the battery has reached its practical limit. It does not power the laptop itself and offers no runtime for the main components.

Highlights

  • Compatible with ASUS X501A and X501U models
  • Lithium chemistry provides reliable RTC power
  • Tested before shipping for dependable operation
  • Replaces faulty or cracked CMOS batteries
  • Package includes one CMOS BIOS battery

Specifications

Battery TypeLithium

Questions about this item

Which DBTLAP CMOS battery version do I need for my ASUS X501A or X501U?

This single replacement battery fits both the X501A and X501U models, so no separate version selection is required.

What does the lithium CMOS battery actually do once installed in the laptop?

It powers the real-time clock and retains BIOS settings when the main battery is removed or the system is unplugged.

How does the battery connect to the motherboard, and what limits its compatibility?

The cell uses a standard two-wire connector keyed for ASUS X501 series boards; it will not fit models with a different pin layout.

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