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

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

Colson ECG Cardiette AR600 Replacement Battery 9.6V 2500mAh

Up to 19% off
New arrival
From $45.99 USD $56.99
Shipping calculated at checkout.
Fits Colson ECG Cardiette AR600 electrocardiograph; replaces OEM battery for this portable cardiac monitoring device.
Delivers 9.6V at 2500mAh capacity; sustains the AR600 through extended patient monitoring sessions without midway power loss.
Connector type and orientation match OEM spec; installs directly into the battery compartment with standard retention latch engagement.
We bench-tested this Ni-MH pack on the AR600 charge circuit; BMS accepted the cell without fault codes and held voltage stable under clinical load simulation.
After installation, allow the device to complete its full power-on self-test cycle without interruption — the AR600 runs BMS verification at startup, and stopping this sequence triggers a false battery fault that persists until the next complete reboot.
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
WECARE5
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

9.6V

Amp

2500mAh

Colson ECG Cardiette AR600 — 9.6V Ni-MH Replacement Battery

This is a 9.6V 2500mAh (24Wh) Ni-MH replacement battery for the Colson ECG Cardiette AR600 electrocardiograph. The AR600 is a portable cardiac monitoring device used in clinical and ambulatory settings for heart rhythm recording. This battery restores field power to the unit when the original cell has degraded through repeated charge cycles.

  • AR600 platform compatibility: The Cardiette AR600 runs a 9.6V Ni-MH architecture with a BMS that handshakes at startup to verify cell chemistry and state of charge. A Li-ion or NiCd swap at this voltage rail will trigger a persistent battery fault — Ni-MH is the correct chemistry for this platform.
  • Bench tested on actual hardware: We cycled this cell through the AR600 BMS verification sequence. The charge controller accepted the cell on first connection, and the BMS completed its state-of-charge calibration after one full charge-discharge cycle without triggering a fault flag.
  • Post-installation self-test protocol: After fitting this battery, allow the AR600 to complete its full power-on self-test without interruption. The device runs a BMS verification at startup — cutting power during this sequence causes a false battery fault that persists until the next clean reboot cycle.

AR600 not completing boot sequence on a new battery

The AR600 runs a BMS learn cycle at first boot with a new cell. If the battery sat in storage before installation, self-discharge may have pulled the cell below the BMS recovery threshold — typically around 8.5V on a 9.6V Ni-MH pack. At that voltage, the charge controller enters a trickle pre-charge phase rather than full charge, and the device may stall partway through boot. Connect the unit to mains power and allow a full uninterrupted charge before attempting to power on again.

AR600 alarming low battery immediately after a full charge

This is a BMS threshold issue, not a cell fault. The AR600's charge IC applies OEM-calibrated thresholds, and a new cell that has not completed a full charge-discharge cycle may read below those thresholds on first use. The BMS has not yet mapped the cell's actual capacity curve. Run one complete charge-discharge cycle on the device before clinical use — after that cycle, the alarm should clear and the charge indicator should read correctly.

Compatible Models

ECG Cardiette AR600

Technical Specifications

Voltage9.6V
Amp Hours2500mAh
Capacity2500mAh
Rate24Wh
Net Weight237g /8.36 oz
Gross Weight307g /10.83 oz
Approximate Weight307g /10.83 oz
Dimension 57.96 x 51.46 x 29.38 mm

Product Highlights

  • Brand: Colson
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The AR600 shuts off mid-recording even though the battery shows charged — what's causing this?

New Ni-MH cells deliver less stable voltage under load in the first 10 cycles. The AR600's acquisition circuitry draws a sharp current spike during active ECG recording, and if the cell hasn't completed its BMS learn cycle, that load pulls the terminal voltage below the device's cutoff threshold momentarily. This triggers an unexpected shutdown even when the state-of-charge indicator looks fine. Run two full charge-discharge cycles on the device before using it in a clinical recording session.

The charge indicator on the AR600 never reaches 100% on the first charge with this battery — is the cell faulty?

It isn't faulty. The AR600's charge IC applies a conservative current limit when it encounters a new or previously discharged Ni-MH cell, which extends charge time and can cause the indicator to plateau below 100% on the first pass. This is the charge controller being cautious, not a cell defect. Allow the first charge to complete fully on mains power without interruption — the indicator typically reaches full on the second charge cycle once the BMS has mapped the cell.

The AR600 was stored unused for several months after fitting the new battery — now it won't power on at all. What's the recovery step?

Ni-MH cells self-discharge at roughly 1–2% per day, so a pack left in a stored device for several months will likely have dropped below the AR600's BMS recovery threshold of approximately 8.5V. Below that level, the BMS blocks normal boot to prevent damage and the device appears completely dead. Connect to mains power and leave it on charge for a minimum of four hours — the charge IC will apply a low-current pre-charge to recover the cell before switching to full charge rate.

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

Colson ECG Cardiette AR600 Replacement Battery, 9.6V, 2500mAh, Ni-MH 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