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

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

Lenovo ET280 PDA Replacement Battery 3.7V 1200mAh

Up to 20% off
New arrival
From $27.99 USD $34.99
Shipping calculated at checkout.
Fits Lenovo ET280 PDA and pocket PC devices; replaces OEM part GB/T18287-2000.
3.7V lithium-ion cell at 1200mAh capacity delivers 4.44Wh — standard output for sustained handheld operation.
Connector type and orientation match ET280 battery slot without modification; insert and seat fully.
Bench test showed clean BMS handshake on first charge cycle with no voltage cutoff anomalies.
Sync all open files and application data to your host computer before removing the old battery — ET280 RAM loses power on full cell removal and unsaved work will not recover.
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 11 reviews

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

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

3.7V

Amp

1200mAh

Lenovo ET280 — 3.7V Li-ion Replacement Battery (GB/T18287-2000)

This is a 3.7V, 1200mAh Li-ion battery for the Lenovo ET280 PDA and Pocket PC. It replaces the original cell when the device no longer holds a charge or fails to power on. Voltage and capacity match the OEM specification exactly.

  • ET280 platform fit: The ET280 runs a single-cell 3.7V Li-ion architecture. The BMS in this unit monitors cell voltage and temperature, and the connector pinout matches the OEM housing — no adapter or modification needed.
  • Bench tested on actual hardware: We cycled this battery through charge and discharge on the ET280 platform. The BMS reported correct cell state, and the device completed a full boot sequence without triggering low-voltage cutoff.
  • RAM power and data sync before swap: The ET280 stores open application state and unsaved data in volatile RAM powered directly by the main battery. Before removing the old cell, perform a full data sync to your host computer — pulling the battery without syncing will wipe anything not written to flash storage.

ET280 not booting after new battery installation

A new Li-ion cell ships at partial charge — typically 40–60% — and the ET280 boot sequence requires a minimum threshold voltage to initialise the operating system. If the device shows nothing or flickers off immediately after swap, the cell voltage is too low to complete boot. Connect the device to the charger and allow at least 20–30 minutes before attempting to power on. The battery must reach approximately 3.6V before the boot sequence will run to completion.

Battery life shorter than expected during active warehouse scanning

The ET280's barcode scanner LED and wireless radio draw significantly more current than the standby baseline. In continuous scanning sessions, this combined load can reduce observed capacity well below what you'd see in normal PDA use. The 1200mAh rating reflects total available charge under controlled discharge — not peak-draw field conditions. To extend time between charges in scanning workflows, disable the wireless radio when active sync is not needed and reduce screen brightness.

Compatible Models

ET280

Replaces Part Numbers

GB/T18287-2000

Technical Specifications

Voltage3.7V
Amp Hours1200mAh
Capacity1200mAh
Rate4.44Wh
Gross Weight100g /3.53 oz
Approximate Weight100g /3.53 oz

Product Highlights

  • Brand: Lenovo
  • Manufacturer: CS
  • Series: Standard
  • Color: Silver
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My ET280 lost all its open data when I swapped the battery — why did that happen?

The ET280 keeps active application data and unsaved files in SRAM, which is powered directly by the main battery. The moment the old cell is removed, that RAM loses power and everything in it is gone. Flash storage survives the swap — only data not yet written to flash is at risk. Before any future battery change, perform a full ActiveSync or data sync to your host computer first.

The ET280 won't turn on at all after fitting the new battery — is the battery dead?

It's almost certainly a low-voltage issue, not a dead cell. New Li-ion batteries ship partially discharged, and the ET280 requires a minimum voltage to complete its boot sequence. Connect the charger and leave it for at least 20–30 minutes before pressing the power button. If the device still won't boot after a full charge, hold the reset button for 10 seconds and attempt a cold boot.

Wireless sync keeps dropping on the ET280 since the battery swap — what's causing it?

The ET280's radio is voltage-sensitive — when cell voltage sags under load, the wireless module can lose its connection mid-transfer. This is most common if the replacement battery was not fully charged before use. Charge the battery to 100% and retest sync stability. If drops continue at full charge, check that the battery contacts in the housing are clean and making firm contact.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • 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

Lenovo ET280 Replacement Battery, 3.7V, 1200mAh, Li-ion 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