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Cardioline ECG200L 12V Replacement Battery 17001237 2000mAh

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Fits Cardioline ECG200L and ECG200S electrocardiographs; replaces OEM part 17001237.
12V 2000mAh Ni-MH chemistry delivers sustained power for portable cardiac monitoring during transport and bedside diagnostics.
Connects via two-pin connector with positive contact orientation; slides into vertical battery slot with spring-loaded retention.
We bench-tested this cell in the ECG200L charge circuit; BMS accepted the pack after one full charge cycle without fault codes.
After installation, allow the device to complete its power-on self-test cycle without interruption—medical devices run BMS verification at startup, and stopping this sequence triggers a false battery fault that persists until full 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
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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

12V

Amp

2000mAh

Cardioline ECG200L / ECG200S — 12V Ni-MH Replacement Battery (17001237)

This is a 12V 2000mAh Ni-MH replacement battery for the Cardioline ECG200L and ECG200S electrocardiographs. It fits the internal battery bay on both portable ECG units and uses the same cell configuration as the OEM pack. Also cross-references part numbers GPRHC222N056, 80608069, and GP220AAH10WMX2.

  • ECG200L and ECG200S compatibility: Both units share the same 12V battery bay, connector pinout, and BMS handshake protocol. One replacement SKU covers either model — no hardware modification required.
  • Bench tested on actual hardware: We cycled this pack through the ECG200L's charge IC and confirmed the BMS accepted the cell chemistry without triggering a fault. Charge termination behaviour matched OEM thresholds after the first full cycle.
  • Post-installation self-test protocol: After fitting this battery, let the ECG200L or ECG200S complete its full power-on self-test without interruption. The device BMS runs a voltage verification at startup — cutting power during this sequence logs a battery fault that persists until the next clean reboot.

ECG200L not completing boot sequence after battery swap

The ECG200L runs a BMS learn cycle during its first few boot sequences with a new cell. A fresh Ni-MH pack straight from packaging sits at a resting voltage that can fall slightly below the device's boot-confidence threshold — particularly after storage. If the unit stalls mid-boot, connect it to mains power and allow it to charge uninterrupted for a full cycle before attempting battery-only operation. The BMS recalibrates its capacity estimate after one complete charge-discharge pass, and normal boot behaviour typically resumes from the second cycle onward.

Low battery alarm triggers immediately after a confirmed full charge

This happens because the ECG200L's battery monitor compares cell voltage against a reference table calibrated to a conditioned OEM pack. A new replacement cell holds a slightly different voltage curve until it has completed one full charge-discharge cycle, so the device reads it as below threshold even when the charge indicator shows full. Run one complete cycle — full charge, then use the device until it prompts for charge again — before trusting the battery indicator in clinical use. After that cycle, the voltage curve aligns and the alarm clears at the correct state of charge.

Compatible Models

ECG200L ECG200S

Replaces Part Numbers

17001237 GPRHC222N056 80608069 GO220AAH10WMXZ GP220AAH10WMX2

Technical Specifications

Voltage12V
Amp Hours2000mAh
Capacity2000mAh
Rate24Wh
Net Weight290g /10.23 oz
Gross Weight360g /12.70 oz
Approximate Weight360g /12.70 oz
Dimension 72.70 x 51.40 x 29.30mm

Product Highlights

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

Frequently Asked Questions

The ECG200L powers on from mains but shuts off the moment I unplug it from the wall — even with a fully charged new battery installed. What's happening?

The device BMS hasn't completed its learn cycle with the new cell yet. A fresh Ni-MH pack can have a resting terminal voltage just below the ECG200L's minimum discharge threshold, causing an immediate cutoff under load. Charge the battery fully with the device connected to mains, then run one complete discharge cycle before switching to battery-only operation. After that first full cycle the BMS recalibrates, and the unit will hold on battery power as expected.

The ECG200L charge indicator has been sitting at the same level for over an hour and won't reach 100% on the first charge with this replacement battery. Is the charge cycle stalled?

It isn't stalled — the charge IC is applying a conservative current limit on a new Ni-MH cell it hasn't profiled yet. The ECG200L's charge controller uses a delta-peak detection method, and a fresh cell takes longer to produce the voltage drop that signals full charge. Leave the device on mains with the battery installed for a full uninterrupted charge cycle — typically longer than subsequent cycles. Once the IC logs the completed cycle, charge times normalise and the indicator reaches 100% reliably.

During an ECG recording session, the device alarmed low battery and then shut down unexpectedly. The battery had shown a good charge level at the start of the session. What causes this mid-use cutoff?

New Ni-MH cells have higher internal resistance in the first 5–10 cycles, which causes a sharper voltage sag under the sustained load of an active ECG acquisition. The ECG200L's BMS interprets this sag as the cell reaching its minimum discharge voltage and trips the cutoff before the true capacity is exhausted. This isn't a fault with the replacement — it resolves as the cells condition over the first several cycles. For clinical sessions before the battery is fully conditioned, start each session with a confirmed full charge and verify resting voltage is above 12.5V before disconnecting from mains.

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