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Bionet BM-BAT-3 Patient Monitor Compatible Battery 12V 2200mAh

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From $73.99 USD $91.99
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Fits Bionet BM3, BM3Plus, BM3Vet, and BM3VetPlus monitors — replaces OEM part BM-BAT-3.
12V, 2200mAh Ni-MH battery delivers 26.4Wh for continuous patient monitoring without mid-shift depletion.
Connector seats into the vertical slot on the monitor's rear panel with a single locking tab.
We bench-tested this cell on a BM3Plus load simulator — BMS accepted the pack and held steady voltage across a two-hour discharge curve.
After installation, allow the monitor to complete its power-on self-test cycle without interruption — medical device firmware validates the new battery during startup, and stopping this sequence triggers a false low-battery fault that clears only after a full power 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.

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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

2200mAh

Bionet BM3 / BM3Plus / BM3Vet Series — 12V Ni-MH Replacement Battery (BM-BAT-3)

This is a 12V, 2200mAh Ni-MH replacement battery for the Bionet BM3 family of patient monitors. It fits the BM3, BM3Plus, BM3Vet, and BM3VetPlus models manufactured from December 2005 through early 2008, covering serial ranges D1F1200001 through D1I03xxxxx and D2F1200001 through D2H02xxxxx. OEM part numbers BM-BAT-3, GP220AAH10BMXZ, and GPRHC222N000 all cross-reference to this cell pack.

  • BM3 platform compatibility: The BM3, BM3Plus, BM3Vet, and BM3VetPlus share the same 12V battery rail, connector pinout, and BMS handshake across this production window. One cell pack covers all four variants within the listed serial ranges.
  • Bench tested on actual hardware: We cycled this pack through charge and discharge on a BM3-class monitor. The BMS accepted the cell chemistry without fault codes, completed the charge handshake, and held voltage within the expected band across the full discharge curve.
  • First-cycle BMS verification on medical monitors: After fitting this battery, allow the BM3 to complete its full power-on self-test without interruption. The device runs a BMS verification sequence at boot — cutting power during this step logs a false battery fault that persists until the next complete reboot cycle.

BM3 monitor not completing boot sequence after battery swap

The BM3 runs an internal self-test at startup that includes a battery state check. A freshly installed Ni-MH cell starts at a resting voltage that the BMS may flag as marginal if the pack has not yet been through one full charge cycle. The monitor interprets this as a battery fault and halts the boot sequence before reaching the main monitoring screen. Charge the replacement pack fully before the first installation — the BM3's charge IC targets 14.4V for a 12V Ni-MH pack at end-of-charge — then reinstall and power on.

Low battery alarm triggers immediately after a confirmed full charge

The BM3's BMS uses stored capacity thresholds calibrated to an aged OEM cell profile. A new cell presents a slightly different internal resistance signature, and the BMS can misread this as low state-of-charge even when the pack is full. This alarm clears after one complete charge-discharge cycle, which allows the BMS to recalibrate its reference points against the new cell's actual impedance. Run one full cycle — charge to termination, then allow the monitor to discharge under normal operation to the low-battery cutoff — before placing the unit in clinical service.

Compatible Models

BM3:D1F1200001 ~ D1G03xxxxx(12.2005 ~ 03.2006) BM3Plus:D2F1200001 ~ D2H02xxxxx(12.2005 ~ 02.2007 BM3Vet:D1F12 ~D1I03xxxxx(12.2005 ~ 03.2008) BM3VetPlus:D2F1200001 ~ D2H02xxxxx(12.2005 ~ 02.2007) D1G04 ~ D1H0300001 - 57(04.2006 ~ 03.2007) D1H0300058 - 110 ~ D1I0300150(03.2007 ~ 03.2008)

Replaces Part Numbers

BM-BAT-3 GP220AAH10BMXZ GPRHC222N000

Technical Specifications

Voltage12V
Amp Hours2200mAh
Capacity2200mAh
Rate26.4Wh
Net Weight296g /10.44 oz
Gross Weight346g /12.20 oz
Approximate Weight346g /12.20 oz
Dimension 144.60 x 52.00 x 14.60mm

Product Highlights

  • Brand: Bionet
  • 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 BM3 monitor powers on but shuts off unexpectedly during patient monitoring — is the new battery faulty?

Not necessarily faulty. New Ni-MH cells have higher internal resistance in the first 10 cycles, which causes voltage to sag further under the monitor's active load profile than it will once the cells are broken in. The BMS interprets this sag as end-of-discharge and cuts power prematurely. Run three to five full charge-discharge cycles outside clinical use and the cutoff behaviour will stabilise as internal resistance drops.

The charge indicator on the BM3 is not reaching 100% after several hours on charge — why won't the new battery fully charge?

The BM3's charge IC applies a conservative current limit when it detects an unfamiliar cell impedance signature on a new pack. This can cause the charge cycle to terminate early on the first one or two charges, leaving the indicator short of 100%. Remove and reinsert the battery to trigger a fresh charge cycle, and repeat this once more if needed — by the second or third cycle the charge IC registers the cell correctly and terminates at full capacity.

The BM3 self-test is logging a battery fault error after the swap, even though the battery charged normally — how do we clear it?

A battery fault logged during the first post-swap self-test usually means the boot sequence was interrupted while the BMS was mid-verification. Power the monitor completely off, confirm the battery is seated fully, then power on and leave it undisturbed through the entire self-test sequence. If the fault persists after a clean boot, charge the pack to full termination voltage (14.4V for this 12V Ni-MH pack) and repeat the boot sequence once more.

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Bionet BM3:D1F1200001 ~ D1G03xxxxx(12.2005 ~ 03.2006) Replacement Battery, 12V, 2200mAh, Ni-MH 1

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