USAbatteries.com stocks 1 compatible replacement batteries for the Toshiba Satellite series, covering 3,545+ laptop configurations and 63 distinct part numbers. Replacement batteries in this category are priced at $56.99.
The Toshiba Satellite M line was a long-running family of multimedia and mid-range laptops built from roughly 2004 to 2012. It was made for mainstream consumers, students, and home-office users who wanted stronger performance than budget machines without paying premium prices, often with extras like Harman Kardon audio and sharper displays. The line spans nearly a decade of models, from early M30 and M40 units through the M100 and M300 series and into the later M500, M600, and M645 generations.
These are lithium-ion packs running 10.8 to 14.4 V with capacities from about 31 to 98 Wh, built around 6-cell and higher cell counts depending on the model. Because the line covers nearly ten years, part numbers vary widely by sub-series and production year, so you have to match your exact model rather than the family name alone. For example, an early Satellite M40 typically uses an older pack while a later Satellite M645 takes a PA3817U-1BRS, so two machines in the same family can need completely different batteries.
Always confirm your exact model number and the part number printed on your current battery before ordering.
Sub-Series
- Satellite 305
Common Battery Part Numbers
| PA5023U-1BRS | 10.8V · 58.0Wh / 5200mAh · fits 526 models |
|---|---|
| PA3819U-1BRS | 10.8V · 58.0Wh / 5200mAh · fits 513 models |
| PA3817U-1BRS | 10.8V · 56.2Wh / 5200mAh · fits 330 models |
| PA3817U1BAS | 10.8V · 98.0Wh / 8800mAh · fits 280 models |
| PA5110U-1BRS | 10.8V · 58.0Wh / 5200mAh · fits 148 models |
| PA5184U-1BRS | 14.4V · 31.7Wh / 2200mAh · fits 132 models |
Toshiba Satellite Battery Specifications
| Voltage range | 10.8 V to 14.4 V |
|---|---|
| Capacity range | about 31 Wh to 98 Wh |
| Cell chemistry | Lithium-ion (3-cell to 6-cell) |
| Part numbers in this series | 63 |
| Compatible models covered | 3,545+ |
| Price | $56.99 |
Frequently Asked Questions
What battery does the Satellite 305 use?
The Satellite 305 uses a 6-cell lithium-ion battery in the 10.8 to 14.4 V range, with capacity from about 31 to 98 Wh depending on the exact unit. Common matching part numbers across the Satellite M line include PA5023U-1BRS, PA3819U-1BRS, and PA3817U-1BRS. Because configurations changed over the years, check the part number printed on your current battery before ordering. The price for a replacement is $56.99.
How do I find the right battery for my Satellite M model?
Start with two pieces of information: the full model number on the bottom of the laptop and the part number printed on your original battery, such as PA3817U-1BRS or PA5184U-1BRS. The Satellite M family covers about 3545 compatible models across 63 distinct part numbers, so the model name alone is not enough. Match the printed part number to confirm voltage (10.8 to 14.4 V) and capacity (about 31 to 98 Wh) line up with your machine.
How much does a Satellite M replacement battery cost?
A Satellite M replacement battery costs $56.99. That single price applies across the lithium-ion packs in this category, which run 10.8 to 14.4 V with capacities from about 31 to 98 Wh. Part numbers like PA5110U-1BRS and PA3817U1BAS fall within the same pricing, so you can match your exact model without worrying about a higher price for a particular sub-series or year.
Are Satellite M batteries interchangeable?
No, Satellite M batteries are not universally interchangeable. The line spans roughly 2004 to 2012 with 63 distinct part numbers, and voltages range from 10.8 to 14.4 V with capacities from about 31 to 98 Wh. A pack like PA3819U-1BRS will not fit a model designed for a different part number even within the same family. Always confirm the part number on your original battery before ordering so the connector, voltage, and physical size all match.
What differs between the Satellite M sub-series batteries?
The main differences are voltage, capacity, cell count, and physical fit, all of which shifted across production years. Earlier models in the line use older packs, while later units such as the Satellite M645 take PA3817U-1BRS. Voltages range from 10.8 to 14.4 V and capacities from about 31 to 98 Wh, with 6-cell lithium-ion being common. Because of this spread across 63 part numbers, you cannot assume one sub-series battery fits another.
Where do I find the battery part number?
Look on the original battery itself, where the part number is printed on the label, for example PA5023U-1BRS or PA5184U-1BRS. Remove the pack or check the visible edge to read it. You can also find your full laptop model number on a sticker on the bottom of the machine. Matching the printed part number is the most reliable way to confirm the correct voltage (10.8 to 14.4 V) and capacity for your Satellite M.
Can I replace the Satellite M battery myself?
Yes, on many Satellite M models the battery is a user-replaceable pack you can swap by hand. Power down, disconnect the charger, release the latch, and slide the old battery out, then seat the new one until it clicks. Confirm the part number first, such as PA3817U1BAS or PA5110U-1BRS, so the replacement matches your 10.8 to 14.4 V system. If your specific unit uses an internal pack, follow the steps for opening the base panel.
What are the signs the battery needs replacing?
Common signs include much shorter runtime than when the laptop was new, sudden shutdowns even with charge remaining, and the system reporting the battery as failing or not charging. You may also see the charge stall well below 100 percent. Since these are lithium-ion packs rated about 31 to 98 Wh, capacity naturally fades with age and charge cycles. If you notice these symptoms, match your part number (for example PA3819U-1BRS) and replace the pack for $56.99.
Related Categories
- All Toshiba Laptop Batteries
- Toshiba Laptop Chargers
Last updated: June 2026. Compatibility data verified before publishing.