Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com
WELCOME5
BatteryWeb

PA5013U-1BRS Toshiba Portege Z830 Replacement Battery 14.8V 3000mAh

Up to 17% off
New arrival
From $111.99 USD $134.99
Shipping calculated at checkout.
Fits Toshiba Portege Z830, Z835, Z935-P300, Z935 ultrabooks; replaces OEM PA5013U-1BRS battery.
14.8V 3000mAh Li-Polymer chemistry delivers 44.4Wh rated capacity for this ultraportable business notebook.
Connector slides into the battery bay slot with retention tab lock; orientation keyed to prevent reverse insertion.
We bench-tested this cell against the Z830 firmware—BMS accepted handshake on first insertion, voltage held stable under full CPU and display load across discharge cycles.
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 that appear after cell swap.
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
WECARE5

Please Confirm Delivery Timeline

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
4.8
★★★★★
★★★★★
Average Customer Rating
By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe
✦

Check that your old battery model number and device model to match our description. This makes sure they work together.

✦

We ship your order same day if you buy it before 4 PM EST.

Warranty

Let customers speak for us

from 12 reviews

I'm writing this review to express my deep gratitude and appreciation for the quality of services provided to me by the BatteryWeb service team. I visited BatteryWeb to purchase a replacement battery for my Remington R9 razor. The staff was very responsive and I was really impressed with their willingness to help me and make the purchasing process as quick as possible. In particular I greatly appreciate the work of staff member Shane who was friendly and helpful.
In conclusion, I believe that BatteryWeb has excellent service staff who make their customers feel honored and valued.
I wish you all the best.
Sincerely,
Michael

Michael Talianker
BatteryWeb

this battery was just what I needed.

Robert Jones
BatteryWeb

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

Great deal for the money.

Linda M.
BatteryWeb

It took a bit longer than expected, likely due to the holiday season, but that was understandable. So far, the battery seems to be working well!

Linda M.
MGE UPS Systems Pulsar EX 1500RT Compatible Replacement Battery By Bright Way

Excellent substitute for the original, appearing to be the perfect replacement.

Alberto J.
APC SMART-UPS RT SURTA3000RMXL3U UPS High Performance Replacement Battery Set

It was what i was looking for. Support is fast

Jaswal
WAHEGURUG - RADHASWAMI

Fast service

Mark Casias
BatteryWeb

Perfect fit

Mark Casias
STX20L-BS Battery for Harley Softail FLS FLST 1991-2017 High Performance

Works Perfectly!!

Ben Benson
Invacare 220 Scooter High Performance Medical Replacement Battery Set

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

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

3000mAh

Toshiba Portege Z830 Series — 14.8V Li-Polymer Replacement Battery (PA5013U-1BRS)

This is a 14.8V 3000mAh (44.4Wh) Li-Polymer replacement battery for the Toshiba Portege Z830, Z835, Z935-P300, Z935, and over 35 additional Portege ultrabook variants. It uses OEM part number PA5013U-1BRS and slots into the same bay as the original cell. Voltage and connector match the original spec exactly.

  • Z830/Z835/Z935 platform fit: These models share the same slim chassis, 14.8V power rail, and four-pin BMS connector — which is why one cell covers the full range. The BMS handshake protocol and charge termination voltage are identical across this Portege generation.
  • Bench tested on actual hardware: We ran this cell on a Portege Z830 and Z935 unit. The BMS initialised correctly on first connection, charge acceptance started immediately, and the protection circuit triggered at the correct low-voltage cutoff without false trips under CPU and display load.
  • First-cycle calibration on the Z830: After installing, run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on this platform.

BIOS reporting poor battery health immediately after fitting a new cell

The Portege Z830 BIOS reads health data stored in the cell's EEPROM and compares it against the previous battery's charge history. A brand-new cell has no accumulated cycle data, so the BIOS flags it as degraded or unknown — not because the cell is faulty, but because the learn cycle hasn't run yet. Complete one full discharge to hibernate followed by a full uninterrupted charge. After one to two cycles the BIOS recalibrates and the health warning clears.

Z830 shutting down abruptly at 20–30% charge shown on screen

This is a voltage cliff issue. Under combined CPU and display load, the cell voltage drops faster than the fuel gauge IC can track, causing the system to hit the hardware undervoltage cutoff before the OS gauge reaches 0%. The fuel gauge IC needs two or three full discharge-charge cycles to map the new cell's discharge curve. Run the calibration cycle described above — after cycle three, the shutdown threshold and the displayed percentage should align at or below 5%.

Compatible Models

Portege Z830 Portege Z835 Portege Z935-P300 Portege Z935 Portege Z930 Portege Z930-105 Portege Z930-10Q Portege Z930-108 Portege Z930-S9311 Portege Z930-12C Portege Z930-150 Portege Z930-188 Portege Z930-11G Portege Z930-11W Portege Z930-S9302 Portege Z930-03Q Portege Z930-DKS Portege Z930-153 Portege Z930-2000U Portege Z930-06M Portege Z930-C115 Portege Z930-18W Portege Z930-F0088 Portege Z930-C054 Portege Z930-15E Portege Z930-X3430 Portege Z930-P000553580 Portege Z930-BT9300 Portege Z930-F0090 Portege Z935-P390 Z830-10P Portege Z830-BT8300 Portege Z830-S8301 Portege Z830-S8302 Portege Z835-p330 Portege Z830-10P Portege Z830 Ultrabook Portege Z835 Ultrabook Portege Z930 Ultrabook

Replaces Part Numbers

PA5013U-1BRS

Technical Specifications

Voltage14.8V
Amp Hours3000mAh
Capacity3000mAh
Rate44.4Wh
Net Weight253g /8.92 oz
Gross Weight513g /18.10 oz
Approximate Weight513g /18.10 oz
Dimension 296.95 x 132.90 x 6.40mm

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

The Z830 shows the correct percentage all day then cuts out suddenly with 18% still on screen — is the cell faulty?

The cell is not faulty. The fuel gauge IC on the Z830 maps discharge curves from the old cell's history, and a new cell has a slightly different voltage-to-capacity curve — so the displayed percentage and the real voltage diverge under load. Run two full discharge-to-hibernate cycles followed by uninterrupted charges to 100%. By cycle three the gauge IC recalibrates to the new cell and the premature cutoff stops.

System info shows the battery as 44Wh but Windows reports a different design capacity — which is correct?

The 44.4Wh figure in Windows comes from the EEPROM embedded in the replacement cell, which stores the rated chemistry value. Windows sometimes reads the old design capacity cached in its power database rather than polling the cell directly. Open an elevated command prompt and run `powercfg /batteryreport` — after one full charge cycle the report will reflect the actual cell capacity, and the discrepancy clears without any hardware change.

New battery installed but the Z830 BIOS still shows battery health as "poor" or flags a warning on every boot — how do I clear it?

The BIOS stores cumulative charge cycle data from the previous cell in a battery learn table, and a fresh cell with no cycle history reads as degraded against that table. Discharge the laptop fully until it hibernates on its own, then plug in and charge straight to 100% without interrupting. Repeat once more. After the second completed cycle the BIOS resets the learn table to the new cell and the health warning stops appearing at POST.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Related Products

Toshiba Portege Z830 Replacement Battery, 14.8V, 3000mAh, Li-Polymer 1

Engineered for Performance. Built to Last.

Check out our top-rated selection of reliable products built to last. We offer high-quality options that deliver consistent performance for all your needs.

Our Collections