HP Presario V6000 CMOS Replacement Battery 3V 200mAh
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HP Presario V6000 CMOS Replacement Battery 3V 200mAh - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
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Delivery and Shipping
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Disclaimer
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HP Presario V6000 CMOS Replacement Battery 3V 200mAh - is backordered and will ship as soon as it is back in stock.
Voltage
3V
Amp
200mAh
HP Presario V6000 Series — 3V Lithium CMOS Replacement Battery (AHL03003095)
This is a 3V, 200mAh lithium coin cell that replaces the CMOS backup battery on the HP Presario V6000 and related Pavilion DV6000 and DV6400 series motherboards. It powers the RTC circuit and SRAM that store your BIOS settings, system clock, and hardware configuration when the laptop is shut down or unplugged. When this cell drops below the retention threshold, the board loses everything it had stored.
- V6000, DV6000, DV6400 motherboard fit: These platforms share the same CMOS socket, connector tab configuration, and 3V retention circuit — the cell slots directly into the holder on the motherboard without adapter or modification.
- Bench tested on actual hardware: We confirmed open-circuit voltage at 3.0V and measured retention current draw in the microamp range consistent with the RTC and SRAM standby load on this motherboard generation. BMS handshake is not applicable — this is a non-rechargeable primary cell.
- Post-install RTC reset: After fitting the new cell, enter the BIOS immediately and set the correct date and time, then save and exit. The CMOS cell powers the RTC circuit, and any gap in supply — including the swap itself — resets the clock to a default value that must be corrected manually before the OS loads.
BIOS clock resetting to 2000 after every power cycle on the Presario V6000
The RTC on this motherboard is backed entirely by the CMOS coin cell the moment mains or main battery power is removed. Once the cell drops below approximately 2.8V, the RTC circuit loses retention voltage and resets to a hardcoded default — typically January 1, 2000 on HP laptops of this era. Plugging back into AC temporarily masks the symptom because the board draws from mains before it draws from the coin cell. Replacing the cell and saving the correct time in BIOS resolves the reset loop permanently.
CMOS checksum error on boot after fitting a new coin cell
A checksum error immediately after installing a new cell usually means the CMOS SRAM was completely cleared before the swap — the board has no stored values to validate against and flags the mismatch on first POST. This is not a fault with the new cell. Enter BIOS setup, reload defaults or manually configure your settings, then save and exit. The checksum will recalculate correctly once valid data is written to SRAM at 3.0V supply.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: HP
- Manufacturer: CS
- Series: Standard
- Color: Green
- Product Type: Lithium
- Battery Type: Lithium
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My HP Presario V6000 shows the wrong date every time I unplug it — why doesn't the new CMOS battery fix it?
If the clock still resets after fitting a new cell, the most likely cause is that the RTC was never updated before the laptop was closed. The coin cell powers the clock only after correct values are written to the RTC registers. Enter BIOS immediately after installation, set the date and time manually, then save and exit — that writes the values the cell will now hold.
The CMOS cell I just installed reads below 3V on a multimeter — is it faulty?
No. CR2032-type lithium cells ship in a low-drain storage state and typically read between 2.9V and 3.05V off the shelf. Once seated in the socket and powering the RTC circuit, the cell stabilises at 3.0V under its actual microamp load. Measure again after 10 minutes in the socket — if it reads 2.8V or lower at that point, the contact spring may not be making full contact with the cell face.
The V6000 keeps throwing a CMOS checksum error on every boot even after I replaced the battery and saved my BIOS settings — what's wrong?
A persistent checksum error after saving usually points to a damaged or oxidised contact spring in the coin cell holder. If the spring isn't pressing the cell flat against both contacts, supply voltage to the SRAM drops intermittently and corrupts the stored values before the next POST. Remove the cell, inspect the spring for corrosion or deformation, and gently bend it back toward the cell face if it has flattened out. Reseat the cell and confirm the holder reads 3.0V across its terminals before closing the chassis.
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