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Acer M300 PDA Replacement Battery 3.7V 1530mAh BA-6105510

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From $22.99 USD $28.99
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Fits Acer M300 PDA and replaces OEM part numbers BA-6105510, 761U300371W, and SYWDA712200105.
This 3.7V, 1530mAh lithium-polymer cell restores full runtime on the M300 organizer for calendar, contacts, and document functions.
Connector slides straight into the M300 battery slot with a single locking tab on the right edge.
We bench-tested this cell in an M300 unit; the BMS accepted voltage immediately and held stable through a full discharge cycle.
Perform a complete data sync to your host computer before removing the old battery — the M300 keeps open files and settings in RAM powered by the main cell, and full power loss erases unsaved data.
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.

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

3.7V

Amp

1530mAh

Acer M300 — 3.7V Li-Polymer Replacement Battery (BA-6105510)

This 3.7V, 1530mAh lithium-polymer battery replaces the OEM cell in the Acer M300 PDA. It fits the M300 pocket PC form factor and uses the same connector and voltage rail as the original. Sourced to match OEM part numbers BA-6105510, 761U300371W, and SYWDA712200105.

  • M300 platform fit: The M300 uses a single flat Li-Polymer cell at 3.7V nominal. The BMS in the device expects this voltage rail — swapping to a mismatched cell trips the low-voltage cutoff and prevents boot. This cell matches that rail exactly.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on M300-class PDA hardware. The BMS handshake completed without fault flags, and the charge controller accepted the cell without forcing a protection cutoff.
  • RAM data protection before swap: Sync all open files and application state to a host PC before removing the battery. The M300 stores active data in SRAM powered directly by the main cell — pulling the battery without syncing first clears anything not written to flash storage.

Why the Acer M300 won't boot after a new battery is installed

A freshly shipped Li-Polymer cell typically arrives at storage voltage — around 3.0V to 3.3V. The M300 boot sequence requires a minimum voltage threshold before the processor initialises. If the cell is below that threshold, the device shows nothing on screen or loops at the boot logo. Charge the battery for at least two hours before attempting a first boot.

M300 battery draining faster than expected during active scanning or wireless sync

Standby current draw on the M300 is low, but the wireless radio and backlit display pull significantly more current when active. Short, frequent wireless sync sessions prevent the radio from completing its full transmit cycle efficiently, which compounds draw. This is a use-pattern issue, not a cell defect. Batch your sync sessions and reduce backlight brightness to keep voltage above 3.5V during active use.

Compatible Models

M300

Replaces Part Numbers

BA-6105510 761U300371W SYWDA712200105

Technical Specifications

Voltage3.7V
Amp Hours1530mAh
Capacity1530mAh
Rate5.66Wh
Net Weight29g /1.02 oz
Gross Weight54g /1.90 oz
Approximate Weight54g /1.90 oz
Dimension 69.85 x 44.09 x 5.61mm

Product Highlights

  • Brand: Acer
  • 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 Acer M300 lost all my contacts and calendar data after I swapped the battery — what happened?

The M300 stores active application data and open files in SRAM, which is powered directly by the main battery. The moment the old cell is removed, that RAM loses power and its contents are gone. This is not a fault with the new battery — it is how the hardware works. Before any future battery swap, do a full ActiveSync or Windows Mobile Device Center sync to push all data to the host PC first.

The M300 shows a blank screen or won't get past the boot logo with the new battery installed — is the battery dead?

It is not dead — it is almost certainly at storage voltage, typically between 3.0V and 3.3V after shipping. The M300's boot sequence requires a minimum voltage to initialise the processor, and a low-charge cell does not meet that threshold. Put the device on charge for two full hours before attempting to power on, then hold the power button for a full five seconds.

My M300's wireless sync keeps dropping or running slowly after fitting the new battery — what's causing it?

The M300's wireless radio is voltage-sensitive and will throttle or drop connection when cell voltage sags under radio transmit load. This usually happens when the new battery is not yet at a full charge. Charge to 100% before running a sync session, and check that the battery indicator shows full — not just "charging complete" — before starting the transfer.

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