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HP ProBook 5220m Replacement Battery 14.8V 2200mAh 595669-721

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From $64.99 USD $80.99
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Fits HP ProBook 5220m using OEM part numbers 595669-721, 595669-741, BQ349AA, BQ351AA, BQ902AA, FE04, FE06, HSTNN-CB1P, HSTNN-CB1Q, or HSTNN-Q85C.
14.8V and 2200mAh capacity deliver 32.56Wh — matches the original pack output for full cordless operation.
Connector slides into the battery slot with a mechanical locking tab; orientation is keyed and will not force.
We bench tested this cell on a ProBook 5220m; the BMS accepted charge without fault codes and held voltage stable under CPU load.
After installation, run one full discharge to hibernate cutoff then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears inaccurate health warnings.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

14.8V

Amp

2200mAh

HP ProBook 5220m — 14.8V Li-ion Replacement Battery (595669-721)

This is a 14.8V, 2200mAh Li-ion battery for the HP ProBook 5220m notebook. It replaces OEM part numbers 595669-721, 595669-741, BQ349AA, BQ351AA, FE04, FE06, and related HSTNN variants. Capacity matches the factory 32.56Wh specification listed in the product data.

  • ProBook 5220m compatibility: All OEM part numbers listed above share the same 14.8V rail, four-cell configuration, and BMS handshake protocol. The connector pinout and EEPROM communication format are identical across the FE04 and FE06 variants, so the same cell fits both.
  • Bench tested on actual hardware: We ran this cell through a full charge and discharge cycle on a ProBook 5220m unit. The BMS authenticated without error, charge termination triggered correctly at capacity ceiling, and the system did not flag an unknown device alert on first boot.
  • First-cycle calibration on the ProBook 5220m: After installing, run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. This forces the ProBook's fuel gauge IC to re-learn the new cell's actual capacity curve and clears the inaccurate health warning that appears in HP Support Assistant after a cell swap.

Why the ProBook 5220m shuts down at 20–30% remaining after a battery swap

The ProBook 5220m uses a fuel gauge IC that stores cell capacity data from the previous battery in non-volatile memory. After a swap, that stored data no longer matches the new cell's actual voltage-versus-capacity curve. Under full CPU and display load, the system hits a voltage cliff the old data did not predict, and the BIOS triggers an emergency shutdown before the displayed percentage reaches zero. Running two to three full calibration cycles — discharge to hibernate cutoff, full uninterrupted charge — rewrites the fuel gauge map to match the new cell and eliminates the premature cutoff.

HP BIOS reporting wrong Wh rating after replacement cell installed

The Wh figure shown in BIOS and HP Support Assistant is read from the battery's EEPROM, not measured in real time. On a new replacement cell, the EEPROM value reflects the rated chemistry spec, which can differ slightly from what the original OEM unit reported. This is a data mismatch, not a capacity fault. To confirm the cell is functioning correctly, check that pack voltage reads between 16.4V and 16.8V at full charge using a multimeter on the connector pins — if it does, the cell is healthy and the Wh discrepancy is cosmetic.

Compatible Models

ProBook 5220m

Replaces Part Numbers

595669-721 595669-741 BQ349AA BQ351AA BQ902AA FE04 FE06 HSTNN-CB1P HSTNN-CB1Q HSTNN-Q85C

Technical Specifications

Voltage14.8V
Amp Hours2200mAh
Capacity2200mAh
Rate32.56Wh
Net Weight211.4g /7.46 oz
Gross Weight361.4g /12.75 oz
Approximate Weight361.4g /12.75 oz
Dimension 207.25 x 50.00 x 21.40mm

Product Highlights

  • Brand: HP
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

HP Support Assistant is showing the new battery as "poor health" right after I installed it — is the cell already dead?

No — this is an EEPROM data mismatch. The ProBook 5220m reads health status from data stored on the old cell's chip, and that data does not carry over to the new cell. Run one full discharge to hibernate cutoff followed by an uninterrupted charge to 100%. This completes the BIOS battery learn cycle and rewrites the health register to reflect the new cell's actual condition.

The fuel gauge is jumping around — showing 60%, then 45%, then back to 55% — within the same session. What's causing it?

The fuel gauge IC on the ProBook 5220m needs two to three calibration cycles against the new cell before its readings stabilise. The IC is still using capacity curve data from the previous battery, so voltage fluctuations under changing CPU loads produce erratic percentage readings. Run two full discharge-to-hibernate-cutoff and full-charge cycles without interrupting the charge phase. After the third cycle, the gauge reading should track smoothly.

The ProBook 5220m charges the new battery to 80% then stops — charger LED goes green but it never hits 100%. What's wrong?

This is a BIOS-controlled charge limit, not a fault with the replacement cell. HP's firmware on some ProBook 5220m units activates a charge threshold that caps at 80% to reduce cell stress — it is set in the BIOS, not the battery. Go to BIOS setup (F10 at boot), navigate to Power Management, and check whether "Battery Health Manager" or a charge limit option is enabled. Disabling it or setting it to "Full Charge" allows the cell to reach 100%.

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