Product Overview
The PA5045U-1BRS is a high-quality OEM-grade replacement battery purpose-built for Toshiba Dynabook, Portege and Tecra business laptops, restoring a full 66Wh of dependable power (10.8V / 5800-6200mAh) so you can get through long meetings, travel days and heavy multitasking without hunting for a power outlet.
Manufactured with high-quality Grade-A Li-ion cells and an intelligent Battery Management System (BMS) featuring overcharge, over-discharge, over-current and short-circuit protection, this 100% brand-new replacement passes strict pre-shipment quality checks and is backed by a 1-year warranty.
Specifications
| Standard Model | PA5045U-1BRS |
|---|---|
| Capacity | 66Wh / 5800-6200mAh |
| Voltage | 10.8V |
| Battery Type | Li-ion |
| Cell | High-Quality Grade-A Li-ion Cells |
| Color | Black |
| Condition | 100% Brand New Replacement |
| Warranty | 1-Year Warranty |
Replace Part Numbers
- PA5045U-1BRS
- PA3831U-1BRS
- PA3832U-1BRS
- PA3833U-1BRS
- PA3929U-1BRS
- PA3930U-1BRS
- PA3931U-1BRS
- PA3932U-1BRS
- PABAS235
- PABAS236
- PABAS249
- PABAS250
- PABAS265
Compatible Models
- For Toshiba Dynabook R730
- For Toshiba Dynabook R731
- For Toshiba Dynabook R732
- For Toshiba Dynabook R741
- For Toshiba Dynabook R742
- For Toshiba Dynabook R751
- For Toshiba Dynabook R752
- For Toshiba Dynabook RX3
- For Toshiba Portege R700
- For Toshiba Portege R705
- For Toshiba Portege R830
- For Toshiba Portege R835
- For Toshiba Portege R930
- For Toshiba Portege R935
- For Toshiba Tecra R840
- For Toshiba Tecra R850
- For Toshiba Tecra R940
- For Toshiba Tecra R950
FAQ
Q: Will this PA5045U-1BRS battery fit my Toshiba Dynabook, Portege or Tecra laptop?
A: Yes. This replacement battery is designed for Toshiba Dynabook (R730, R731, R732, R741, R742, R751, R752, RX3), Toshiba Portege (R700, R705, R830, R835, R930, R935), Toshiba Tecra (R840, R850, R940, R950) series laptops. Before ordering, please confirm the battery model printed on your original battery label matches PA5045U-1BRS or one of the listed replacement part numbers (PA5045U-1BRS, PA3831U-1BRS, PA3832U-1BRS, PA3833U-1BRS, PA3929U-1BRS, PA3930U-1BRS, PA3931U-1BRS, PA3932U-1BRS, PABAS235, PABAS236, PABAS249, PABAS250, PABAS265).
Q: What capacity and voltage does this battery provide?
A: The battery delivers 66Wh at 10.8V (5800-6200mAh), matching the original OEM specification to restore the full battery life your laptop had when new.
Q: Is this battery safe and does it come with a warranty?
A: Yes. It is built with Grade-A Li-ion cells and a BMS that provides overcharge, over-discharge, over-current and short-circuit protection. The battery is 100% brand new, CE-compliant, ships safely, and is covered by a 1-year warranty with reliable after-sales support.
Note:
This is not a complete list or inclusion of all compatible laptop models. You can open the back of your laptop to check the original battery model. If you have any compatibility questions, please contact us online.The casing is made of durable materials, the mainboard adopts advanced technology, and the battery core is produced with high-quality raw materials to ensure that it will not be damaged after long-term use.
Our products are equipped with multiple protection technologies such as overvoltage, overcurrent, and overcharge to effectively protect the safety of batteries and equipment.
China warehouse delivery method
Overseas Warehouse Shipping Times & Costs
Payment Methods
Paypal
Payments by PayPal, no PayPal account required. Paypal is safe and free for buyers.
PayPal account: Payment@batterymall.com
Account Name: ShenZhen KingSener Science and Technology Co., Ltd
Credit or debit card
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WeChat Pay
Currently only supports QR code payment. Please contact WeChat customer service and go to WeChat App to scan the QR code to complete the payment.
Google Pay
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Apple Pay
If you use an Apple device, you can use Apple Pay to pay, which is more convenient and faster.
Bank Transfer
Q&A
Quick FAQ:Laptop Battery Care & Troubleshooting
- What Should I Know Before Buying a Laptop Battery Replacement?A: Before buying a laptop battery replacement, confirm your laptop’s exact model number and the part number printed on the original battery. Check the battery voltage, connector, physical dimensions, and compatibility list. Do not choose a battery based on appearance alone, because similar laptop models may use different batteries. Review the seller’s warranty, return policy, and product specifications before ordering.
- How Do I Find a Compatible Laptop Battery for My Device?A: To find a compatible laptop battery, identify your laptop’s full model number and the part number on the original battery. Compare these details with the replacement battery’s compatibility list and specifications, including voltage, connector type, and dimensions. If you are unsure, contact customer support with your laptop model and original battery part number before placing an order.
- Can I leave my laptop plugged in 24/7?Yes, the built-in TI chip prevents overcharging. Tip: To prevent long-term cell swelling, unplug and drain the battery to 40% twice a month.
- Why Is My Laptop Battery Not Charging?A: A laptop battery may not charge because of a faulty AC adapter, damaged charging port, loose connection, temperature protection, battery-health settings, or a worn-out battery. Confirm that you are using a compatible charger and inspect the cable and port for visible damage. Restart the laptop and review the manufacturer’s battery or charging settings. If the battery becomes unusually hot, swollen, or damaged, stop using it and seek professional assistance.
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Are BatteryMall Laptop Batteries Reliable?BatteryMall laptop batteries are designed with safety and reliability in mind. All batteries feature built-in IC protection against short-circuits, over-voltage, and overheating, helping protect the battery during normal use. They are also CE, FCC, and RoHS certified. For the best experience, choose a compatible laptop battery that matches your exact laptop model and original battery part number, and follow the installation and care instructions. BatteryMall also provides a 1-year warranty on KingSener batteries purchased from BatteryMall; see the Product Warranty page for details.