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Small silver coin cell CMOS battery with two wire leads

DBTLAP

DBTLAP CMOS Battery for A505-S6020/25/30/31/33/34/35/40

SKU CH-RAH9-ZVR2W

Replacement lithium CMOS RTC BIOS battery for compatible A505-S6020 through A505-S6040 laptop motherboards

  • Battery typeLithium
  • Keeps system clock accurate with lithium CMOS battery
  • Compatible across A505-S6020 through A505-S6040 laptop models
  • Ready for motherboard installation as direct RTC BIOS replacement
  • Each unit tested before shipping for reliable operation
  • Replaces faulty or cracked CMOS batteries to restore BIOS settings

Compatible CMOS Battery for A505 Models

This DBTLAP lithium CMOS battery replaces the RTC BIOS cell on specific laptop motherboards. It fits the A505-S6020, A505-S6025, A505-S6030, A505-S6031, A505-S6033, A505-S6034, A505-S6035 and A505-S6040. Each unit is tested before shipping and supplied as a single replacement part. It restores system time and BIOS settings when the original cell fails.

For Motherboard Battery Replacement Only

This part suits owners of the listed A505 models who need to replace a depleted or faulty motherboard coin cell. It is not a main laptop power battery and will not run the system. Buyers looking for a primary rechargeable battery pack to power the laptop should look elsewhere. The component serves only the real-time clock and CMOS memory circuit.

Lithium Coin Cell Chemistry

The battery uses lithium chemistry to maintain the real-time clock and BIOS configuration when the laptop is unplugged. Matching the exact model numbers above is the single specification that decides fitment. No other electrical ratings or dimensions are provided, so verification against the original motherboard cell remains essential before purchase.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 60% of the 10,440 comparable items (median $10.99).

Specifications

Power
Battery typeLithium

Questions about this item

How do I install this CMOS battery in my A505-S6020 laptop and which step is often missed?

Disconnect the main battery, open the chassis, unplug the old coin cell from the motherboard header, snap in the new DBTLAP unit, then reconnect the main battery before closing the case — skipping the main-battery disconnect risks a short.

What maintenance or replacement will this CMOS battery need later?

The lithium cell powers the real-time clock and BIOS memory; when the system clock drifts or settings reset after shutdown, swap the coin cell for a fresh one.

What limit appears first under sustained use of this CMOS battery?

The cell voltage gradually falls; once it drops below the threshold needed to hold CMOS data, the clock loses time and BIOS defaults reload at every boot.

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