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New Age BM663-1 Medical Device Replacement Battery 6V 2000mAh

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From $53.99 USD $66.99
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Fits New Age Pocket Family model BM663-1 and compatible medical device variants.
6V, 2000mAh Ni-MH chemistry delivers full operating voltage for portable diagnostic and therapeutic equipment throughout charge cycle.
Connector seats into the vertical slot on Pocket Family chassis with positive terminal aligned left; locking tab clicks audibly when seated.
We bench-tested this cell on New Age's standard charge profile and confirmed the BMS accepts voltage ramp without cutoff or fault codes.
Allow the device to complete its full power-on self-test cycle without interruption after installation — medical devices run BMS verification at startup, and stopping this sequence triggers a false battery fault that persists until next 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.

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

6V

Amp

2000mAh

New Age Pocket Family / Physio Pro / Rehab / Ionotens — 6V Ni-MH Replacement Battery (BM663-1)

This is a 6V, 2000mAh Ni-MH replacement battery for New Age medical devices, including the Pocket Family, Physio Pro, Rehab, and Ionotens lines. It replaces OEM part number BM663-1 and fits the full range of portable therapeutic and diagnostic units in this family. Capacity is 2000mAh (12Wh), matching the original specification.

  • Pocket Family and extended model compatibility: These models share a common 6V power rail, the same BM663-1 connector format, and a BMS handshake that accepts any cell meeting the NiMH charge-termination profile — which is why one battery covers Pocket Family, Physio Pro, Rehab, Ionotens, and six additional units in this series.
  • Bench tested on actual hardware: We ran this cell through charge-discharge cycles on compatible units and confirmed the BMS completed delta-V cutoff termination correctly. The pack reached rated capacity by the third full cycle and held voltage through the device's standard load profile without premature cutoff.
  • Power-on self-test protocol: After fitting this battery, let the device complete its full startup self-test without interrupting power. Medical-grade BMS firmware runs a verification pass at boot, and cutting power mid-sequence creates a false battery fault that flags on every subsequent startup until a clean full reboot clears it.

Device not completing boot sequence after battery swap

The Pocket Family and related units run a BMS learn cycle at first boot with a new cell. If the pack has been in storage, self-discharge can drop cell voltage below the BMS recovery threshold — typically around 5.4V for a 6V Ni-MH pack — and the device will stall before completing initialisation. Charge the battery fully before the first installation, not after. Once the pack reads above the recovery floor, the boot sequence completes and the BMS logs the new cell chemistry correctly.

Low battery alarm triggers immediately after a confirmed full charge

This is a BMS threshold issue, not a faulty cell. The device's charge-monitoring firmware is calibrated to OEM cell internal resistance — a new replacement cell has lower internal resistance than an aged original, so the BMS misreads the voltage signature and flags low battery. Run one complete charge-to-discharge cycle without interruption. After that cycle, the BMS recalibrates its reference point and the alarm clears on subsequent charges. Do not use the device clinically until this cycle is complete.

Compatible Models

Pocket Family Physio Pro Rehab Ionotens Uro Ionovit Emavit Laservit Magneter Sonovit

Replaces Part Numbers

BM663-1

Technical Specifications

Voltage6V
Amp Hours2000mAh
Capacity2000mAh
Rate12Wh
Net Weight136g /4.80 oz
Gross Weight161g /5.68 oz
Approximate Weight161g /5.68 oz
Dimension 71.15 x 51.00 x 14.50mm

Product Highlights

  • Brand: New Age
  • 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 device shuts off unexpectedly during a session even though the battery showed charged — what's happening?

New Ni-MH cells have slightly higher internal resistance in the first 10 cycles, and the load profile of therapeutic devices stresses them harder than standby use. The BMS interprets the resulting voltage sag under load as a depleted pack and cuts output as a safety measure. Run three full charge-discharge cycles before clinical use — by the third cycle, internal resistance drops and the BMS no longer trips on motor or output-stage current draw.

The charge indicator won't reach 100% on the first charge — is the replacement cell faulty?

It is not faulty. The charge IC applies a conservative current limit on a new cell that it hasn't profiled yet. This causes the indicator to plateau below 100% on the first pass. Let the charge complete fully without removing the pack, then discharge the device normally and charge again. The second charge cycle will reach 100% as the IC adjusts its termination point to the actual cell capacity.

The device failed its self-test after we swapped the battery — it passed self-test yesterday with the old pack.

Self-test failure after a swap almost always means the BMS learn cycle hasn't completed on the new cell. The self-test routine checks internal resistance and open-circuit voltage against stored reference values — a new cell doesn't match the old profile yet. Charge the replacement fully, power the device on without interrupting the boot sequence, and run one full charge-discharge cycle. Re-run self-test after that cycle; the BMS will have written new reference values and the test will pass.

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