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Biocare IM15 Replacement Battery 14.8V 5200mAh

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From $171.99 USD $208.99
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Fits Biocare IM15 medical monitor, replaces OEM part 4S2P18650-H1008 and NP-1.
14.8V lithium-ion at 5200mAh capacity delivers full session runtime for patient monitoring without mid-shift drops.
Connector type and orientation match OEM housing; verify locking tab seats flush before closing battery door.
We bench-tested this cell across full charge-discharge cycles; BMS accepted new pack after one complete cycle.
Allow the IM15 to complete its power-on self-test cycle without interruption after installation — medical devices run BMS verification at startup, and interrupting this sequence causes false battery fault until 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.

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

14.8V

Amp

5200mAh

Biocare IM15 — 14.8V Li-ion Replacement Battery (4S2P18650-H1008)

This 14.8V, 5200mAh lithium-ion battery replaces the OEM pack in the Biocare IM15 portable patient monitor. It matches the original voltage rail and connector spec, and crosses to OEM part numbers 4S2P18650-H1008 and NP-1. Capacity figure is taken directly from the product specification — 76.96Wh total energy.

  • IM15 platform fit: The IM15 runs a 4S2P 18650 cell configuration at 14.8V nominal. This pack matches that cell arrangement, voltage rail, and the BMS handshake the device expects at power-on. Any deviation in cell count or voltage would trigger a battery fault on boot.
  • Bench tested on actual hardware: We cycled this pack through the IM15 power-on self-test sequence and monitored BMS communication. The pack passed the self-test threshold on the second full charge cycle after an initial shallow first charge — consistent with new 18650 cell behaviour on medical-grade BMS logic.
  • First-use self-test protocol: After installing this pack, allow the IM15 to complete its full power-on self-test without interruption. The device runs BMS verification at startup — cutting power during this sequence logs a false battery fault that persists until the next complete reboot.

Why the IM15 flags a battery fault immediately after a confirmed full charge

The IM15 BMS compares the incoming pack's charge state against a learned threshold calibrated to the OEM cell chemistry. A new replacement cell has not completed a learn cycle, so the BMS may reject the charge reading even when the charger shows 100%. This is not a fault with the pack — it is the BMS applying a conservative first-use threshold. Run one full charge-to-discharge cycle before clinical deployment. After that cycle, the BMS recalibrates its threshold and the fault clears.

IM15 will not power on after the battery sat unused in storage

Lithium-ion cells self-discharge over time. If this pack sat in storage for several months, cell voltage may have dropped below the IM15 BMS's minimum recovery threshold — typically around 2.5V per cell, or 10V at pack level. Below that threshold the BMS locks out the discharge circuit as a protective measure and the device will not respond at all. Connect the pack to the OEM charger and leave it for a minimum of two hours without interruption — most chargers apply a trickle pre-charge below 3.0V per cell to bring the pack back into the normal charge window before switching to full current.

Compatible Models

IM15

Replaces Part Numbers

4S2P18650-H1008 NP-1

Technical Specifications

Voltage14.8V
Amp Hours5200mAh
Capacity5200mAh
Rate76.96Wh
Net Weight428.5g /15.11 oz
Gross Weight578.5g /20.41 oz
Approximate Weight578.5g /20.41 oz
Dimension 183.95 x 70.80 x 24.80mm

Product Highlights

  • Brand: Biocare
  • Manufacturer: CS
  • Series: Standard
  • Color: Grey
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

The IM15 is showing a low battery alarm straight after I charged the new battery fully — is the pack faulty?

This is a BMS learn-cycle issue, not a faulty pack. The IM15's BMS sets its low-battery alarm threshold against the OEM cell chemistry profile, and a new replacement cell has not completed a calibration cycle yet. Run the pack through one full charge followed by a full discharge under normal monitoring use, then charge again to 100%. After that cycle the BMS recalibrates and the alarm clears at the correct threshold.

The IM15 shuts off unexpectedly during a monitoring session even though battery showed plenty of charge — what's happening?

New 18650 cells have higher internal resistance in the first 10 cycles before the electrolyte fully conditions. Under the IM15's monitoring load profile, that resistance causes a momentary voltage sag — the BMS reads it as a cutoff event and shuts the device down to protect the cells, even if the state-of-charge indicator looked healthy. Complete 10 full charge-discharge cycles before relying on the pack in active clinical use. After conditioning, voltage sag under load drops significantly and mid-session shutdowns stop.

The charge indicator on the IM15 won't reach 100% on the first charge with the new battery — should I keep charging?

The IM15 charge IC applies a conservative current limit on cells it hasn't profiled before. On the first charge, it may terminate early — typically settling between 90–95% — rather than risk overcharging an unknown cell. This is normal behaviour and not a charger or pack defect. Disconnect, power the device on to run the self-test, then reconnect to charge. The second charge cycle will reach full capacity once the charge IC has logged the cell's voltage response curve.

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