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Small silver coin cell CMOS battery for HP ProBook 6555b

DBTLAP

DBTLAP CMOS Battery for HP ProBook 6555b

SKU CH-860T-DD5JW

Lithium CMOS battery maintains BIOS settings and system clock for HP ProBook 6555b motherboards

  • Battery typeLithium
  • Powers BIOS clock and settings with lithium cell
  • Direct replacement for HP ProBook 6555b motherboard
  • Tested before shipping to ensure reliable operation
  • Replaces faulty or cracked CMOS battery units
  • Package includes one ready-to-install CMOS battery

DBTLAP CMOS Battery for HP ProBook 6555b

This replacement CMOS battery restores BIOS settings and real-time clock function on the HP ProBook 6555b. It is intended for technicians or owners repairing a laptop that loses its date, time or boot configuration after power loss. The lithium cell arrives new and pre-tested for immediate installation.

Steady voltage retention over years of standby

The lithium chemistry delivers a stable low-current supply that keeps the RTC circuit alive while the main battery is removed or depleted. Unlike a short burst test, this cell maintains its rated voltage across the long idle periods typical of a CMOS backup role. It is designed to hold charge for the multi-year lifespan expected of a motherboard battery.

Verify the exact motherboard connector before

HP used several different two-pin connectors across the ProBook line, so confirm that the lead length and plug style match the original part on your board. This battery is not a main power pack and will not run the laptop itself. Buyers needing a primary laptop battery should look for a separate high-capacity pack instead.

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 much power does this CMOS battery draw while the ProBook 6555b runs all day?

The lithium cell supplies only a tiny standby current to keep the real-time clock alive; it adds no measurable load to the main system power.

What must I already have inside the laptop for this battery to work?

A motherboard socket that accepts a standard CMOS coin cell — the part simply plugs into that existing connector.

Will this replacement behave the same as the original cell in an older ProBook 6555b?

Yes, it is a direct lithium CMOS RTC substitute tested before shipping, so the BIOS clock and settings are retained exactly as before.

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