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HP ProBook 4730s 14.4V Replacement Battery 633734-141 4400mAh

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From $113.99 USD $136.99
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Fits HP ProBook 4730s and 4740s laptops, replaces OEM part 633734-141 and equivalent Hewlett-Packard battery part numbers.
14.4V at 4400mAh delivers 63.36Wh — enough for unplugged work on this 17-inch business class system between charges.
Connector uses a standard three-pin keyed socket, tab locks downward into the battery bay slot, no force needed on insertion.
We tested the cell on a 4730s with a full discharge cycle followed by uninterrupted charging; the BMS accepted the pack without voltage anomalies or cutoff errors.
After install, discharge the laptop to hibernation then charge uninterrupted to 100% — this resets the BIOS fuel gauge IC against the new cell and clears false low-health warnings.
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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

14.4V

Amp

4400mAh

HP ProBook 4730s / 4740s — 14.4V Li-ion Replacement Battery (633734-141)

This is a 14.4V, 4400mAh (63.36Wh) Li-ion battery for the HP ProBook 4730s and ProBook 4740s. It replaces OEM part numbers including 633734-141, 633807-001, HSTNN-IB2S, and PR08. Both ProBook models share the same voltage rail, connector pinout, and BMS handshake protocol — one cell fits both.

  • ProBook 4730s and 4740s compatibility: HP used the same battery bay geometry, 14.4V rail, and SMBus communication protocol across the 4730s and 4740s chassis. The BMS on both models reads cell data over the same SMBus interface, so one replacement cell negotiates correctly with both platforms without modification.
  • Bench tested on actual hardware: We ran this cell on a ProBook 4730s under mixed CPU and display load. The BMS completed charge negotiation without fault codes, balanced across all cells through the full charge cycle, and held voltage above the low-battery threshold until hibernate cutoff.
  • Post-install calibration on the ProBook 4730s: After fitting this cell, run one full discharge to hibernate cutoff — do not manually power off — then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the false "poor health" warning that appears after any cell swap on this platform.

Why the ProBook 4730s shuts down at 20–30% remaining

The ProBook 4730s fuel gauge IC calibrates its low-battery threshold against data stored in the original cell's EEPROM. When a new cell is installed, that stored data no longer matches actual cell chemistry, so the IC triggers shutdown well above true depletion. The fix is a calibration cycle: discharge fully to hibernate cutoff, then charge to 100% without interruption. After two to three full cycles, the fuel gauge IC re-learns the new cell's voltage curve and cutoff shifts back to the correct threshold.

BIOS reporting battery health as "poor" immediately after replacement

The HP BIOS reads cycle count, rated capacity, and health status directly from the EEPROM on the old cell. A new replacement cell ships with a fresh EEPROM profile that does not match the values the BIOS cached from the original battery, triggering the health warning even on a brand-new cell. This is a data mismatch, not a cell fault. Run one full discharge-to-hibernate then uninterrupted charge-to-100% sequence — the BIOS re-reads the EEPROM on the next boot and clears the warning once the learn cycle completes.

Compatible Models

ProBook 4730s ProBook 4740s

Replaces Part Numbers

633734-141 633734-151 633734-421 633807-001 HSTNN-I98C-7 HSTNN-IB2S HSTNN-LB2S PR08 QK647AA QK647UT

Technical Specifications

Voltage14.4V
Amp Hours4400mAh
Capacity4400mAh
Rate63.36Wh
Net Weight372g /13.12 oz
Gross Weight642g /22.65 oz
Approximate Weight642g /22.65 oz
Dimension 268.00 x 50.00 x 21.68mm

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

My ProBook 4730s fuel gauge jumps around wildly — showing 60%, then 90%, then 45% within minutes of unplugging. Is the new battery faulty?

This is normal for the first two to three cycles after a cell swap. The fuel gauge IC on the 4730s calibrates against EEPROM data from the original cell — when that data no longer matches the new cell's chemistry, the IC loses track of state-of-charge and reads erratically. Run two full discharge-to-hibernate-cutoff cycles followed by uninterrupted charges to 100% each time. By the third cycle the IC has mapped the new cell's voltage curve and the gauge stabilises.

The ProBook 4730s BIOS shows the wrong Wh rating — it says 55Wh but the replacement cell is rated 63.36Wh. Why?

The Wh figure displayed in the BIOS is pulled from the EEPROM on the battery, not calculated live from the cell. The EEPROM on the replacement cell ships with a rated Wh value based on the OEM specification, which can differ from what the previous cell reported if the old cell had degraded capacity written back into its EEPROM over time. The cell itself is the correct 63.36Wh — confirm this by checking the label against the product data. After a full calibration cycle the BIOS Wh reading will update to reflect the new cell's EEPROM data.

The new battery stops charging at 80% and never reaches 100% on the ProBook 4730s. Nothing I do moves it past that point.

The HP BIOS on some ProBook 4730s units ships with a battery charge limit set at 80% — it is a firmware-level control, not a battery fault. Check BIOS setup (F10 at boot) under the Power menu for an "Extended Battery Life" or "Battery Charge Limit" setting and disable it. If no such option appears, update the system BIOS to the latest HP version for the 4730s, which exposes that control. Once the limit is cleared, the cell will charge to the full 14.4V terminal voltage.

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