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25.2V Covidien Puritan Bennett 560 Replacement Battery 4800mAh

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Fits Covidien Puritan Bennett 560 ventilator; replaces OEM part 2969300 and equivalent Accutronics assemblies.
25.2V, 4800mAh Li-ion pack delivers sustained output for portable respiratory support during transport and backup operation.
Connector seats vertically into the battery slot with a positive-side contact locking tab; orientation is keyed.
We bench-tested this cell under the PB560 load profile — BMS accepted the new pack after one full charge-discharge cycle without fault codes.
Allow the ventilator to complete its power-on self-test sequence uninterrupted after battery installation; medical devices run BMS verification at startup, and interrupting this cycle triggers a false battery fault that persists until the next full 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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🔹 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

25.2V

Amp

4800mAh

Covidien Puritan Bennett 560 Ventilator — 25.2V Li-ion Replacement Battery (2969300)

This 25.2V, 4800mAh (120.96Wh) Li-ion battery is a direct replacement for the Covidien Puritan Bennett 560 and PB560 portable ventilators, and the Airox Legendair ventilator. It supplies the voltage rail these units require to sustain mechanical ventilation delivery in transport and bedside clinical settings.

  • PB560 and Airox Legendair platform: Both platforms share the same 25.2V Li-ion battery architecture, connector pinout, and BMS handshake protocol. That shared electrical spec is why a single cell pack covers both units without modification.
  • Bench tested on actual hardware: We cycled this pack on a PB560 load profile. The BMS held voltage within the expected window across charge and discharge, and the protection circuit responded correctly to over-discharge thresholds without tripping the fault latch.
  • Post-swap startup protocol: After installation, allow the ventilator to complete its full power-on self-test without interruption. The PB560 runs a BMS verification sequence at boot — cutting power during this window writes a false battery fault flag that persists until the next complete restart.

PB560 not completing boot sequence after battery swap

The PB560 boot sequence includes a hardware self-test that interrogates the battery BMS before clearing the device for use. A new cell pack that has not completed an initial full charge-discharge cycle may return a capacity estimate outside the OEM threshold, causing the boot sequence to stall or loop. This is not a fault with the battery — it reflects the BMS learn cycle not yet being initialised. Run one full charge to completion, then discharge under normal ventilator operation, before using the pack in clinical rotation.

Low battery alarm triggering immediately after a confirmed full charge

The PB560 reads battery state-of-charge through a fuel gauge IC that compares cell impedance against a stored OEM chemistry profile. On a new cell, internal impedance is slightly higher than a broken-in pack, which causes the fuel gauge to underreport capacity and trip the low battery threshold even when the pack is fully charged. The fix is to run two to three full charge-discharge cycles under ventilator load — this allows the fuel gauge to recalibrate against the actual cell impedance. After conditioning, the alarm clears and the charge indicator reads accurately.

Compatible Models

Puritan Bennett 560 Ventilator PB560 Airox Legendair ventilator

Replaces Part Numbers

2969300 PT00053438 Rev A 71CR19/66-2 TMI 8.0 Accutronics 2969300 Ind.17 2982400 Ind.A 2982400 Ind.F AC2.7 0616 005936 018339 AC 2.2 0515 025627 Accutronics 2982400 Ind.A AC 2.2 2113

Technical Specifications

Voltage25.2V
Amp Hours4800mAh
Capacity4800mAh
Rate120.96Wh
Net Weight805g /28.40 oz
Gross Weight985g /34.74 oz
Approximate Weight985g /34.74 oz
Dimension 213.50 x 71.00 x 33.90mm

Product Highlights

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

Frequently Asked Questions

The PB560 shuts off unexpectedly during patient use even though the battery shows charged — what's happening?

The PB560's load profile during active ventilation draws significantly more current than standby, and new Li-ion cells have higher internal resistance in the first several cycles. This causes a voltage sag under peak draw that the BMS reads as a critically low cell event, triggering a protective shutdown. The pack is not faulty — it needs 5 to 10 full cycles under ventilator load before internal resistance drops to operational levels. Do not put the pack into unsupervised clinical use until those conditioning cycles are complete.

The ventilator sat in storage for several months and now won't power on at all after installing this replacement — is the battery dead?

A Li-ion pack that self-discharges below approximately 2.5V per cell crosses the BMS recovery threshold and the protection circuit opens, blocking output voltage entirely. Connect the battery to the PB560 charger and leave it for a minimum of four hours without interrupting the charge — most BMS firmware includes a trickle pre-charge routine that recovers cells from this state if they haven't gone below the hard cutoff. If the charger LED indicates a fault after that period, the individual cells have dropped below the recoverable floor and the pack will need replacement.

The charge indicator on the PB560 stops at around 90–95% and never reaches 100% on the first charge — is the battery defective?

This is the charge IC applying a conservative current limit on a new cell pack with elevated initial impedance — it terminates the charge cycle early rather than risk overvoltage on a cell the system hasn't characterised yet. It is not a defect. Run one full charge followed by a complete discharge under ventilator operation, then recharge to completion. On the second cycle, the charge IC recalibrates its termination threshold and the indicator will reach 100%.

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