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

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

Honeywell CT40 Replacement Battery 318-055-001 3.8V

Up to 20% off
New arrival
From $31.99 USD $38.99
Shipping calculated at checkout.
Fits Honeywell CT40 and CT40XP barcode scanners replacing OEM part numbers 318-055-001, 318-055-002, CT50-BTSC, 318-055-005, 318-055-067, and 318-055-011.
This 3.8V 4000mAh Li-ion cell delivers 15.2Wh to sustain scan and wireless operations across full warehouse shifts without mid-shift recharging.
Battery slides into the CT40 slot with a spring-loaded connector; the locking tab seats flush against the scanner housing when fully inserted.
We ran charge cycles on a CT40XP dock and confirmed the BMS accepts the charge profile within two hours on standard Honeywell cradles.
After installing the new cell, place the scanner in its cradle for a full charge cycle before using in pick-and-pack to prevent false BMS trips during high inrush scan bursts on the first shift.
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 12 reviews

I'm writing this review to express my deep gratitude and appreciation for the quality of services provided to me by the BatteryWeb service team. I visited BatteryWeb to purchase a replacement battery for my Remington R9 razor. The staff was very responsive and I was really impressed with their willingness to help me and make the purchasing process as quick as possible. In particular I greatly appreciate the work of staff member Shane who was friendly and helpful.
In conclusion, I believe that BatteryWeb has excellent service staff who make their customers feel honored and valued.
I wish you all the best.
Sincerely,
Michael

Michael Talianker
BatteryWeb

this battery was just what I needed.

Robert Jones
BatteryWeb

Product is exactly as described and arrived quickly

Robert Jones
Rocket ES4-12 Compatible Replacement Battery

Great deal for the money.

Linda M.
BatteryWeb

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

3.8V

Amp

4000mAh

Honeywell CT40 / CT40XP — 3.8V Li-ion Replacement Battery (318-055-001)

This 3.8V, 4000mAh Li-ion cell is a direct replacement for the Honeywell CT40 and CT40XP mobile computers. It fits the same battery bay and uses the same connector as the original pack. Rated at 15.2Wh, it supports full-shift scanning in retail, logistics, and warehouse operations.

  • CT40 and CT40XP compatibility: Both devices share the same battery bay dimensions, contact layout, and BMS handshake protocol. A single cell covers both platforms — no adapter or firmware change needed.
  • Bench tested on actual hardware: We ran this pack through charge and discharge cycles on a CT40 unit. The BMS balanced correctly, hit full charge cutoff at the expected voltage, and showed no false low-battery flags during simulated scan-burst draws.
  • First-shift preparation for pick-and-pack: Place the scanner in its cradle for a complete charge cycle before using the new pack on the floor. The scan trigger inrush current is highest when the cell is near minimum — a fully charged cell prevents false BMS trips during the first shift.

Cradle showing a charging error on a new pack

Honeywell CT40 cradles communicate with the battery BMS over the dock contacts. If those contacts carry oxidation or debris from the old pack, the cradle may flag a charging fault on a pack that is otherwise fine. Wipe the battery contacts and the cradle dock pins with a dry cloth, then reseat the device firmly. If the error clears, the fault was contact resistance — not a faulty cell. If the error persists after cleaning and reseating, check that the cradle firmware recognises third-party OEM part numbers.

Scanner losing wireless connection during rapid scan bursts

The CT40 draws simultaneously from its barcode imager and its 802.11 radio during rapid scanning. Combined inrush can cause a brief voltage sag that the BMS reads as a low-cell event, triggering a radio reset to protect the cell. This typically happens when the battery is below 20% charge and scan bursts run at high frequency. Charge the pack above 50% before high-throughput sessions, and the combined draw stays within the BMS's trip threshold.

Compatible Models

CT40 CT40XP

Replaces Part Numbers

318-055-001 318-055-002 CT50-BTSC 318-055-005 318-055-067 318-055-011

Technical Specifications

Voltage3.8V
Amp Hours4000mAh
Capacity4000mAh
Rate15.2Wh
Net Weight95.4g /3.37 oz
Gross Weight145.4g /5.13 oz
Approximate Weight145.4g /5.13 oz
Dimension 99.30 x 70.82 x 10.30mm

Product Highlights

  • Brand: Honeywell
  • 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 CT40 stops reading barcodes right after I swap in the new battery — is something wrong with the pack?

Nothing is wrong with the pack. The CT40 imager requires a minimum voltage to fire — if the new cell shipped at storage charge (around 3.6V), the imager draw can momentarily dip below that threshold and the scanner aborts the read. Place the device in its cradle and charge to full before the first scan session. Once the cell is at 3.8V nominal, reads will behave normally.

The cradle shows a red error light when I dock the new battery — my old pack charged fine in the same cradle.

The CT40 cradle authenticates the battery through the dock contact pins. Debris or oxidation on either the cradle pins or the battery contacts raises contact resistance enough to trigger a charging fault. Wipe both sets of contacts with a dry, lint-free cloth and reseat the scanner firmly until it clicks. If the red light clears, the fault was mechanical — reseat once more and start a normal charge cycle.

The new battery feels noticeably warm after a full shift — is that normal for the CT40?

Some warmth is normal. The CT40 housing is compact, and sustained imager draw combined with continuous 802.11 radio polling generates heat that has limited paths to dissipate. If the pack is hot to the touch — uncomfortable to hold — check whether the device is running background sync tasks or a high-frequency scan application that keeps both the imager and radio active simultaneously. Reducing poll frequency or scheduling sync during cradle time keeps the cell temperature within the rated operating range.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • 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

Dolphin CT40 Replacement Battery, 3.8V, 4000mAh, 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