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Toshiba Portégé X30T-E-113 Replacement Battery 7.7V 4550mAh PA5325U-1BRS

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Fits Toshiba Portégé X30T-E-113, X30T-E-10Q, X30T-E-176 laptops; replaces OEM part PA5325U-1BRS.
7.7V, 4550mAh lithium-polymer cell delivers 35.04Wh for full workday mobile use.
Connector seats flush into the battery slot with single locking tab; no force needed.
We bench-tested this cell against the OEM pack; BMS accepted the new firmware handshake without fault codes.
After install, discharge the laptop fully to sleep mode, then charge uninterrupted to 100% — this resets the BIOS battery learn cycle and clears health warnings that appear after cell swap.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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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.

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⚠️ 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

7.7V

Amp

4550mAh

Toshiba Portégé X30T-E-113 — 7.7V Li-Polymer Replacement Battery (PA5325U-1BRS)

This is a 7.7V, 4550mAh (35.04Wh) lithium-polymer replacement battery for the Toshiba Portégé X30T-E-113 and related X30T-E series ultrabooks. It uses OEM part number PA5325U-1BRS and fits the slim chassis of the X30 and X30T line. Install it when the original cell no longer holds a useful charge or fails to register correctly in the BIOS.

  • X30T-E series compatibility: The Portégé X30, X30T-E-10Q, X30T-E-113, and X30T-E-176 all share the same 7.7V battery rail, connector pinout, and BMS handshake protocol — which is why PA5325U-1BRS fits each variant without modification.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the X30T platform. The BMS handshake initialised correctly, the BIOS recognised the pack without errors, and the protection circuit responded at expected voltage thresholds.
  • Post-install calibration on the X30T-E: After fitting this battery, run one full discharge until the laptop hibernates, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after a cell swap on this platform.

BIOS reporting poor battery health immediately after fitting the PA5325U-1BRS

The Portégé X30T-E stores battery health data in EEPROM on the original pack. When a new cell is installed, the BIOS reads no accumulated cycle history and flags the pack as degraded or unknown. This is not a fault with the replacement cell — it is the BIOS interpreting missing EEPROM data as damage. Run one full discharge-to-hibernate followed by a complete uninterrupted charge. After two to three full cycles, the BIOS battery learn routine overwrites the stale health flag and the status normalises.

Portégé X30T-E shutting down at 20–30% charge remaining

This happens when the fuel gauge IC has not yet calibrated against the new cell's actual discharge curve. The gauge carries over voltage-to-capacity mappings from the old, degraded cell and miscalculates the remaining charge. Under combined CPU and display load, the laptop hits a voltage cliff the gauge did not predict and shuts down. Let the battery discharge fully to hibernation once — the fuel gauge IC resets its reference point and the reported percentage tracks accurately from that point forward. After calibration, the cutoff aligns with the cell's actual lower voltage limit near 2.5V per cell.

Compatible Models

Port g X30T-E-113 Portege X30 Portege X30T-E-10Q Portege X30T-E-176 Portege x30-T-E

Replaces Part Numbers

PA5325U-1BRS

Technical Specifications

Voltage7.7V
Amp Hours4550mAh
Capacity4550mAh
Rate35.04Wh
Net Weight191g /6.74 oz
Gross Weight451g /15.91 oz
Approximate Weight451g /15.91 oz
Dimension 255.30 x 88.50 x 4.80mm

Product Highlights

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

Frequently Asked Questions

My Toshiba Portégé X30T-E shows the battery Wh rating as wrong in system info after fitting the PA5325U-1BRS — is the cell faulty?

This is an EEPROM mismatch, not a faulty cell. The system reads the rated Wh figure stored in the original battery's EEPROM and compares it against what the new cell reports — the two values can differ slightly depending on how the chemistry was characterised at manufacture. The actual capacity of the replacement is 35.04Wh as rated. Run two full discharge and charge cycles and the system info figure will settle as the fuel gauge IC builds real data from the new cell.

The Portégé X30T-E won't charge above 80% after I installed the replacement battery — what's happening?

The X30T-E BIOS includes a charge limit feature that caps charging at 80% to reduce cell stress during long periods on AC power. This is a firmware-controlled setting, not a fault with the replacement cell. Check Toshiba Settings or the Eco Utility app — the "Eco Charge Mode" or battery care option is likely enabled. Disable it and the battery will charge to 100%.

The battery percentage on the Portégé X30T-E jumps around wildly during the first few uses — normal?

Yes — the fuel gauge IC has not yet mapped the new cell's discharge curve. After a cell swap, the IC is still working from the old cell's calibration data, so percentage jumps of 10–15% are common in the first two or three cycles. Run two full discharges to hibernate cutoff followed by complete uninterrupted charges to 100%. By the third cycle the gauge IC has enough real voltage-curve data to report accurately.

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