Epson WF100 Replacement Battery D181A 3.7V 2600mAh Li-ion
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Epson WF100 Replacement Battery D181A 3.7V 2600mAh Li-ion - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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
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
⚠️ 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.
Epson WF100 Replacement Battery D181A 3.7V 2600mAh Li-ion - is backordered and will ship as soon as it is back in stock.
Voltage
3.7V
Amp
2600mAh
Epson WorkForce WF100 — 3.7V Li-ion Replacement Battery (D181A)
This 3.7V 2600mAh Li-ion cell replaces the OEM D181A battery in the Epson WorkForce WF100 portable inkjet printer and its variants. It fits the WF100, B581A, and PX-S05W. The connector and BMS handshake match the original, so the printer reads charge state correctly from the first boot.
- WF100, B581A, and PX-S05W compatibility: These three models share the same battery bay geometry, D181A connector pinout, and BMS communication protocol. One cell covers all three without modification.
- Bench tested on actual hardware: We ran this cell through full charge and discharge cycles on WF100 hardware. The BMS reported capacity accurately, and the printer completed multi-page print jobs without triggering a low-voltage cutoff.
- First-run charge tip for portable printers: Charge the battery fully before the first print run. The print head motor and heating element draw peak current simultaneously at startup. A partially charged cell can trip the BMS cutoff before the first page clears.
Why the WF100 drops its WiFi connection mid-print job
The WF100 runs its wireless radio and print motor from the same cell simultaneously. Under combined load, voltage sags enough that the radio module briefly loses power headroom and disconnects. This happens most often when battery charge is below 30% and the printer is handling a multi-page job. Keeping the cell above 40% charge during wireless print sessions prevents the sag from reaching the radio's dropout threshold.
Print quality dropping before the low-battery indicator appears
The heating element that drives ink transfer is voltage-sensitive. As the cell discharges, element temperature falls slightly below the target range before the printer's charge indicator catches up with real cell voltage. The result is lighter output or streaking that looks like a head problem but clears when the battery is recharged. If print quality degrades mid-job, stop and recharge — do not push the cell below 20% on print-heavy tasks. A full charge restores normal output immediately.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Epson
- Manufacturer: CS
- Series: Standard
- Color: Black
- Product Type: Li-ion
- Battery Type: Li-ion
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Frequently Asked Questions
My WF100 won't start a print job on the new battery — it just shows a battery error and stops. What's wrong?
The print motor draws a surge of current the moment a job starts, and if the cell isn't fully charged the BMS trips on that spike and throws a battery error before a single page prints. This isn't a faulty battery — it's the BMS protecting a partially charged cell from an overcurrent event. Charge the replacement fully before the first use. Once at 100%, the printer starts jobs without error.
The WF100 keeps jamming paper, but only when the battery is low — is the battery causing that?
Yes. The paper feed motor loses torque as cell voltage drops, and below roughly 3.4V it can no longer pull media through the feed path cleanly. The printer still shows remaining charge on screen, but voltage has already sagged enough to affect motor performance. Recharge before the battery indicator reaches 20% and the feed mechanism operates at full torque throughout the job.
The WiFi drops every time I print more than two pages — the printer reconnects but the job fails. What's happening?
The wireless radio and the print motor run off the same cell at the same time, and the combined draw causes a voltage sag that drops the radio below its operating threshold mid-job. We saw this consistently on the bench when battery charge was below 35% during multi-page wireless jobs. Top the battery up above 50% before starting a long wireless print run. That buffer keeps the voltage stable enough for both the radio and the motor to run together without dropout.
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