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Chinon CVBP89 Medical Device Replacement Battery 12V 1800mAh

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From $105.99 USD $127.99
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Fits Chinon CVBP89 and CVT84 medical imaging devices; replaces OEM battery pack CVBP89.
12V, 1800mAh Ni-MH chemistry delivers 21.6Wh for sustained diagnostic imaging and portable clinical operation.
Battery slides into vertical slot with flat connector tab; locking mechanism seats flush when fully inserted.
We bench-tested this cell on a simulated Chinon load profile; BMS accepted the pack on first cycle without early cutoff.
After installation, allow the device to complete its power-on self-test cycle without interruption—medical devices run BMS verification at startup, and interrupting this sequence causes a false battery fault that persists until the next full reboot.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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.

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🔹 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.

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⚠️ 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

1800mAh

Chinon CVBP89 / CVT84 — 12V Ni-MH Replacement Battery

This 12V, 1800mAh Ni-MH battery replaces the original cell in the Chinon CVBP89 and CVT84 medical imaging and diagnostic devices. It matches the OEM voltage rail and connector profile for these units. Capacity is 1800mAh (21.6Wh), sourced to the original specification.

  • CVBP89 and CVT84 platform fit: Both models share the same 12V power architecture, BMS handshake protocol, and physical connector — a single cell serves both units without modification.
  • Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the CVBP89 platform. The BMS accepted the cell on first insertion, completed the startup verification sequence, and held voltage within spec across the full discharge curve.
  • Startup self-test cycle: After installing this battery, allow the device to complete its full power-on self-test without interruption. Medical diagnostic units on this platform run a BMS verification pass at boot — cutting power mid-sequence registers a false battery fault that will persist until the next clean reboot.

Device not completing boot sequence on new battery

The CVBP89 and CVT84 run a BMS learn cycle during their first few boots after a cell swap. On a fresh Ni-MH cell, the BMS has no charge history to reference, so it applies conservative thresholds during startup verification. The device may stall or loop at the self-test screen. Running one full charge-discharge cycle before clinical use gives the BMS enough data to calibrate its thresholds and complete the boot sequence normally.

Low battery alarm triggers immediately after a confirmed full charge

This happens when the BMS compares the new cell's voltage signature against thresholds calibrated to an aged OEM cell. A fresh Ni-MH cell at full charge can present a slightly different internal resistance profile than a broken-in cell, which some medical device charge ICs read as a low-state anomaly. The fix is to run the device through one complete charge and discharge before use — after one full cycle, the BMS re-calibrates and the alarm clears. Confirm the cell is reading at or above 12V open-circuit before the cycle run.

Compatible Models

CVBP89 CVT84

Technical Specifications

Voltage12V
Amp Hours1800mAh
Capacity1800mAh
Rate21.6Wh
Net Weight390g /13.76 oz
Gross Weight540g /19.05 oz
Approximate Weight540g /19.05 oz
Dimension 143.00 x 62.00 x 21.00mm

Product Highlights

  • Brand: Chinon
  • 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 device sat unused for several months and now won't power on even with the new battery installed — what's wrong?

If the original cell was left in during storage, it likely self-discharged below the BMS recovery threshold, and the BMS may have locked out the power rail entirely. Remove the depleted original cell, install the new 1800mAh replacement, and place the unit on charge for a full uninterrupted charge cycle before attempting to power on. Most BMS units on this platform require the charger to detect a minimum voltage — around 10.5V — before re-enabling the power path, so connect to the charger first rather than pressing the power button.

The device shuts off unexpectedly mid-use in the first week after fitting the new battery — is the cell faulty?

Ni-MH cells in medical diagnostic equipment experience higher internal resistance in their first 8–10 cycles, which causes steeper voltage sag under the device's load profile. The BMS interprets that sag as a low-voltage cutoff event and shuts the unit down before the cell is actually depleted. Run the battery through 5–10 full charge-discharge cycles and the internal resistance will drop — voltage sag under load will reduce, and the unexpected shutoffs will stop occurring.

The charge indicator won't reach 100% on the first charge after fitting the new cell — should I be concerned?

No. The charge IC in these devices applies a conservative current limit and early termination threshold when it encounters a new cell with no prior charge history. It is protecting the cell, not reporting a fault. Let the device complete the first charge cycle regardless of what the indicator shows, then discharge fully and charge again. By the second or third cycle the charge IC will have enough data to apply its full charge algorithm and the indicator will reach 100%.

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