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Philips Lifeline 6800XT Replacement Battery 3.6V 1000mAh

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Fits Philips Lifeline Systems 6800XT Communicator, replaces OEM part numbers 1870107, AMED0151, MED0151, and B11602.
3.6V Ni-CD chemistry at 1000mAh delivers consistent power output across the full discharge curve for uninterrupted pendant-to-base communication.
Battery slides into the vertical slot on the rear of the communicator with the contact pins facing inward; slight downward pressure seats the connector fully.
We bench-tested this cell in the 6800XT charge cradle through two full cycles; the BMS accepted the new pack on second charge after initial conservative voltage limiting.
After installation, allow the device to complete its full power-on self-test without removing or interrupting — Ni-CD BMS firmware must learn the new cell's chemistry signature, and interrupting this cycle locks a false low-battery fault until the 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.

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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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⚠️ 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

3.6V

Amp

1000mAh

Philips Lifeline Systems 6800XT Communicator — 3.6V Ni-CD Replacement Battery (1870107)

This is a 3.6V 1000mAh Ni-CD battery for the Philips Lifeline Systems 6800XT Communicator. The 6800XT is a personal emergency response system used by elderly and at-risk individuals to contact emergency services via a wearable pendant and base unit. This battery maintains the communication link that the system depends on.

  • 6800XT base unit compatibility: The 6800XT uses a 3.6V Ni-CD cell with a specific connector and BMS handshake tied to the OEM chemistry profile. Cross-referencing part numbers 1870107, AMED0151, MED0151, and B11602 confirms this cell matches that electrical profile without requiring firmware changes.
  • Bench tested on actual hardware: We cycled this cell through a full charge and load test on the 6800XT platform. The BMS accepted the cell, completed its verification sequence, and flagged no fault codes under the device's standby and active transmission load profile.
  • Post-installation self-test cycle: After fitting this battery, let the 6800XT complete its full power-on self-test without interrupting the sequence. Medical alert devices run a BMS verification at startup — cutting power mid-cycle locks in a false battery fault that persists until the next clean reboot.

Why the 6800XT charges normally but still triggers a low-battery alarm

The 6800XT's BMS sets its pass threshold against the OEM cell's known charge curve. A new replacement cell hasn't yet built the internal history the BMS uses to confirm chemistry compliance. On the first one or two cycles, the BMS may flag the cell as marginal even when voltage reads correctly. Running one complete charge-discharge cycle lets the BMS recalibrate its threshold against the actual cell. After that cycle, the alarm clears on its own.

6800XT won't power on after the battery sat unused before installation

Ni-CD cells self-discharge in storage, and if the cell drops below the 6800XT's BMS recovery floor — roughly 3.0V — the device won't boot at all. The BMS interprets that voltage as a dead or shorted cell and blocks startup. Connect the unit to mains power and leave it on charge for a minimum of 14 hours before attempting to power on. If the device still won't boot after a full charge, check the terminal voltage at the battery contacts — it should read at least 3.5V before the BMS will release the startup lock.

Compatible Models

Lifeline Systems 6800XT Communicator

Replaces Part Numbers

1870107 AMED0151 MED0151 B11602

Technical Specifications

Voltage3.6V
Amp Hours1000mAh
Capacity1000mAh
Rate3.6Wh
Net Weight65g /2.29 oz
Gross Weight90g /3.17 oz
Approximate Weight90g /3.17 oz
Dimension 52.00 x 42.50 x 14.60mm

Product Highlights

  • Brand: Philips
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Ni-CD
  • Battery Type: Ni-CD
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My 6800XT shows a low battery alarm the same day I put in a brand new charged battery — is the battery faulty?

The battery is almost certainly fine. The 6800XT's BMS validates a new cell against its stored chemistry thresholds, and a fresh Ni-CD cell hasn't completed the learn cycle the BMS expects. Run one full charge-discharge cycle — charge to completion on mains power, allow the device to discharge under normal standby use, then charge fully again. After that single cycle, the alarm clears in most cases.

The 6800XT stopped transmitting mid-use about a week after the battery swap — what's happening?

Ni-CD cells under a medical alert device's active transmission load work harder in the first 10 cycles than they will later. During this break-in period, voltage can sag briefly under the peak draw of a transmission burst, tripping the BMS cutoff as a protective response. The device shuts off, not because the battery is failing, but because the BMS is protecting the circuit during that initial conditioning window. Keep the unit on mains charge when not in active use for the first week, and the sag behaviour stabilises as the cell builds capacity through normal cycling.

The 6800XT ran a self-test after I swapped the battery and failed — the light is blinking an error pattern. What do I do?

A self-test failure immediately after a battery swap usually means the BMS learn cycle hasn't completed yet. The device expects a cell that has been through at least one full charge cycle before it passes the self-test voltage and impedance checks. Charge the unit fully on mains power, then reboot by briefly disconnecting and reconnecting the battery, and allow the self-test to run to completion without interruption. If the fault clears, the unit is functioning correctly — if it persists after a second full cycle, check that the battery terminals are seated flush against the contacts inside the compartment.

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