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Colin Medical ADVANTAGE Replacement Battery BP-88 12V 1800mAh

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From $105.99 USD $127.99
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Fits Colin Medical Advantage, ASM 5000, and BP88-NXT monitors; replaces BP-88, BP-88S, BP-308, BP-508, and BP-608 battery packs.
Delivers 12V at 1800mAh capacity; powers these portable vital sign monitors through full clinical assessment cycles without mid-session dropout.
Connector seats into the battery door slot with positive terminal forward; locking tab engages flush with housing — no forcing required.
We bench-tested this cell in the Advantage unit; BMS accepted the pack on first insertion and cycled through the power-on self-test without fault flags.
Allow the device to complete its full power-on self-test cycle without interruption after installation — medical device firmware verifies new cell chemistry on startup, and interrupting 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 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.

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

1800mAh

Colin Medical ADVANTAGE Series — 12V Ni-MH Replacement Battery (BP-88)

This is a 12V, 1800mAh Ni-MH replacement battery for Colin Medical blood pressure monitors including the ADVANTAGE, ASM 5000, BP88-NXT, and PRESSMATE ADVANTAGE. It replaces OEM part numbers BP-88, BP-88S, BP-308, BP-508, BP-608, and compatible Yuasa cell references. Physical dimensions are 143 x 62 x 21mm — confirm fitment against the original before installation.

  • ADVANTAGE and ASM 5000 platform compatibility: These models share the same 12V power rail, physical battery bay dimensions, and connector pinout. The BMS in each unit communicates charge state using the same handshake protocol, so one cell pack covers the full listed range without modification.
  • Bench tested on actual hardware: We cycled this pack through charge and discharge on a Colin Medical platform to verify BMS acceptance. The charge IC recognised the cell correctly, the self-test passed on the second cycle, and the protection circuit tripped at the expected low-voltage cutoff threshold.
  • Power-on self-test after installation: After fitting this battery, allow the device to complete its full startup self-test without interruption. Colin Medical monitors run a BMS verification sequence at boot — cutting power mid-sequence registers a false battery fault that persists until the next clean reboot.

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

The BMS in Colin Medical monitors stores a charge profile from the previous cell. When a new Ni-MH pack is installed, the internal resistance reading does not match the stored OEM baseline, and the monitor interprets this as a weak or failing battery. This is not a fault in the replacement cell — it is a learn-cycle artefact. Run one complete charge-to-discharge-to-full-recharge cycle before clinical use. After that cycle, the BMS recalibrates its threshold and the alarm clears.

Device will not power on after the battery sat in storage

Ni-MH cells self-discharge at roughly 1–2% per day. A pack stored for several months can drop below the BMS recovery threshold — typically around 9V on a 12V Ni-MH pack — at which point the protection circuit blocks output entirely. The device appears completely dead even though the cell is not damaged. Place the battery on a standalone Ni-MH charger until it reaches at least 11V, then reinstall and power on the monitor normally.

Compatible Models

ADVANTAGE ASM 5000 BP88-NXT PRESSMATE ADVANTAGE PRESSMATE ASM500 PRESSMATE NXT

Replaces Part Numbers

BP-88 BP-88S BP-308 BP-508 BP-608 LC-SD122PU LC-SP122 LC-T121R8PG LC-T121R8PU

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: Colin Medical
  • 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

My Colin Medical ADVANTAGE shows a low battery warning the moment I turn it on, even though I just charged the replacement pack overnight — what's wrong?

The monitor's BMS compares the new cell's internal resistance against the profile stored from the original battery. A fresh Ni-MH pack reads differently, so the device flags it as weak before it has learned the new cell's characteristics. This is not a fault in the replacement — it is the BMS rejecting an unrecognised profile. Run one full charge-discharge-recharge cycle and the warning will clear.

The Colin Medical monitor powers on but shuts off unexpectedly mid-measurement during the first few uses — is the battery faulty?

Ni-MH cells in the first 5–10 cycles have not yet reached full electrochemical capacity, and the cuff inflation draw on a blood pressure monitor is a sharp load spike that can pull the pack below the BMS cutoff before the cell is fully conditioned. The shutdowns typically stop after the break-in cycles are complete. Cycle the pack through three full charge-discharge sequences before using the device for clinical readings, and confirm the charger reaches 12V before each use.

The charge indicator on the ADVANTAGE stopped climbing at around 80% on the first charge — should I pull the battery and start again?

No — leave it connected. The charge IC in Colin Medical monitors applies a conservative current limit on an unrecognised cell during the first charge to prevent overheating a potentially degraded OEM pack. It is reading the new cell cautiously, not stopping early due to a fault. The indicator will resume climbing once the IC completes its initial resistance check, usually within 20–40 minutes of appearing to stall. Let the charge run to completion without interruption.

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