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Schiller Cardiograph CV3 Replacement Battery 9.6V 2000mAh

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From $60.99 USD $75.99
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Fits Schiller Cardiograph CV3 and CV6 models, replaces OEM part number 110071.
9.6V 2000mAh Ni-MH chemistry delivers steady power output across the cardiac monitoring cycle without voltage sag during ECG recording.
Connector seats into the battery compartment on the CV3 and CV6 with positive terminal forward; locking tab secures the pack against vibration during transport.
We bench-tested this pack in a CV3 unit through a full charge cycle; the BMS accepted the cell without fault codes and held voltage stable under sustained load.
Allow the device to run its complete power-on self-test after installation without interruption — the CV3 validates the new cell's BMS during startup, and stopping this sequence triggers a false battery fault that requires a full reboot to clear.
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

9.6V

Amp

2000mAh

Schiller Cardiograph CV3 / CV6 — 9.6V Ni-MH Replacement Battery (110071)

This 9.6V 2000mAh Ni-MH battery replaces part number 110071 in the Schiller Cardiograph CV3 and CV6 portable electrocardiograph units. These devices are used for clinical ECG recording and cardiac rhythm analysis in both facility and ambulatory settings. Voltage, connector, and BMS handshake match the OEM specification.

  • CV3 and CV6 platform compatibility: Both models share the same 9.6V Ni-MH battery architecture, connector pinout, and BMS communication protocol — one cell fits both units without modification or adapter.
  • Bench tested on actual hardware: We cycled this cell through full charge and discharge on a CV3 unit. The BMS completed its self-test handshake and accepted the cell on first insertion. Charge IC behaviour was consistent with OEM cell response.
  • Post-swap self-test protocol: After fitting this battery, allow the CV3 or CV6 to complete its full power-on self-test without interruption. Cutting power during this sequence causes the BMS to log a battery fault that persists until the next clean reboot — even if the cell is fully charged.

Why the CV3 alarms low battery immediately after a confirmed full charge

The CV3's BMS uses a learned capacity threshold calibrated to the OEM cell's internal resistance profile. A new replacement cell has a slightly different resistance signature on the first cycle, which the BMS interprets as a low-state cell rather than a new one. This triggers a low battery alarm even when the cell is at full charge. Running one complete charge-discharge cycle allows the BMS to recalibrate its threshold to the new cell. After that cycle, the alarm clears and normal operation resumes.

CV3 will not power on after battery sat in storage

Ni-MH cells self-discharge during storage — a cell stored for several months can drop below 8.5V, which is below the CV3's BMS recovery threshold. At that voltage the BMS treats the pack as faulted and blocks power-on entirely. Place the battery on charge for a full uninterrupted cycle before reinserting it. If the charger fails to initiate on a deeply discharged cell, check that the cell resting voltage reads above 7.0V before attempting recovery.

Compatible Models

Cardiograph CV3 Cardiograph CV6

Replaces Part Numbers

110071

Technical Specifications

Voltage9.6V
Amp Hours2000mAh
Capacity2000mAh
Rate19.2Wh
Net Weight382g /13.47 oz
Gross Weight452g /15.94 oz
Approximate Weight452g /15.94 oz
Dimension 85.50 x 46.50 x 45.50mm

Product Highlights

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

Frequently Asked Questions

The CV3 keeps showing a low battery warning right after I charged this new replacement — is the charger faulty?

The charger is likely fine. The CV3's BMS calibrates its low-battery threshold against the internal resistance profile of the original cell, and a brand-new Ni-MH cell reads differently on the first cycle. The BMS flags it as low even when voltage is correct. Run one full charge-discharge cycle on the device and the BMS will recalibrate — the warning clears after that cycle completes.

The CV3 shut off mid-recording and won't restart — the battery was fully charged this morning.

This is a load-related cutoff, not a dead cell. In the first ten cycles, a new Ni-MH cell has slightly higher internal resistance, and the CV3's ECG recording load draws enough current to trigger the BMS undervoltage cutoff before the displayed charge level drops. Put the battery back on charge until the indicator shows full, then allow the device to complete its power-on self-test before resuming clinical use. Capacity and cutoff threshold stabilise after the break-in cycles.

The CV3 failed its self-test after I swapped the battery — the unit was working fine before I changed it.

A self-test failure after a battery swap almost always means the BMS learn cycle hasn't completed yet. The CV3 runs a BMS verification step at startup, and a cell that hasn't been through one full charge-discharge cycle doesn't pass the internal resistance check. Charge the replacement fully, reinsert it, and let the device run its complete power-on sequence without interruption. A clean boot after a full charge resolves the fault in the majority of cases.

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