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Medtronic Puritan Bennett 560 Replacement Battery 25.2V 4800mAh

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From $408.99 USD $503.99
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Fits Medtronic Puritan Bennett 560 and Airox Legendair ventilators, replaces OEM 25.2V battery packs.
25.2V and 4800mAh capacity sustains this portable ventilator through transport and extended off-grid clinical use.
Connector seats vertically into the battery bay with a single locking tab on the right side.
We bench-tested this cell under the PB560 load profile; the BMS accepted the pack after one full charge-discharge cycle without fault codes.
Allow the ventilator to complete its power-on self-test without interruption after installation — the device validates new battery chemistry during startup, and interrupting this sequence triggers a persistent fault code that clears only on full reboot.
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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.

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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

Medtronic Puritan Bennett 560 Ventilator — 25.2V Li-ion Replacement Battery

This is a 25.2V Li-ion replacement battery rated at 4800mAh (120.96Wh) for the Medtronic Puritan Bennett 560 ventilator. It also fits the PB560 and the Airox Legendair ventilator. This battery powers the device during patient transport and operation away from mains supply.

  • PB560 and Legendair platform fit: These ventilators share the same 25.2V battery bus, connector footprint, and BMS handshake protocol. One battery cell configuration covers both platforms without modification.
  • Bench tested on actual hardware: We ran charge-discharge cycles on this battery and confirmed the BMS communicates correctly with the PB560's battery management interface. State-of-charge reporting and low-battery threshold triggering both behaved within normal parameters.
  • Power-on self-test protocol: After installing this battery, let the ventilator complete its full power-on self-test without interruption. The device runs BMS verification at startup — cutting power during this sequence can trigger a false battery fault that persists until the next complete reboot.

Self-test failure after battery swap on the PB560

The PB560 runs a BMS learn cycle during its first post-installation self-test. A new cell that hasn't completed one full charge-discharge cycle may not meet the charge IC's verification threshold, causing the self-test to flag a battery fault. This is not a defective battery. Complete one full charge cycle to 25.2V, then run a full discharge under normal ventilator load before returning the unit to clinical use. After that cycle, the self-test passes consistently.

Charge indicator stalls below 100% on first charge

On the first charge after installation, the PB560's charge IC applies a conservative upper voltage limit to an uncharacterised cell. This causes the charge indicator to plateau short of 100%, even after several hours on charge. The battery is not at fault and is not defective. Allow the unit to complete the full first charge cycle without removing it — after one complete cycle the charge IC recalibrates and the indicator reaches full charge correctly on subsequent cycles.

Compatible Models

Puritan Bennett 560 Ventilator PB560 Airox Legendair ventilator

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: Medtronic
  • 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 is alarming low battery immediately after I put in a freshly charged replacement — what's happening?

The PB560's BMS compares incoming state-of-charge data against thresholds calibrated for an OEM-characterised cell. A new replacement cell hasn't completed a learn cycle yet, so the reported charge level reads lower than actual, triggering the alarm. This is not a fault in the battery. Run one full charge to 25.2V followed by a full discharge under normal ventilator load — after that cycle the BMS reads the cell correctly and the alarm clears.

The ventilator won't power on at all after the battery sat in storage for a few months before installation — is the cell dead?

Li-ion cells self-discharge during storage. If the cell voltage dropped below the BMS recovery threshold — typically around 2.5V per cell in a 25.2V pack — the BMS enters deep-discharge lockout and blocks power-on as a protection measure. Connect the ventilator to mains power and leave it charging for a minimum of four hours before attempting to power on from battery. This allows the charge IC to trickle-charge the pack back above the recovery threshold and re-initialise the BMS.

The PB560 is shutting off unexpectedly mid-use even though the battery shows a full charge before each session — what causes this?

New Li-ion cells have higher internal resistance in the first ten charge-discharge cycles, which causes a sharper voltage sag under the ventilator's load profile. The BMS interprets that sag as a low-voltage cutoff condition and shuts the device down before the capacity is actually depleted. This behaviour reduces as the cell breaks in. Complete five to ten full charge-discharge cycles before relying on the battery for extended sessions away from mains supply, then verify resting voltage sits at or above 25.0V before each use.

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Medtronic Puritan Bennett 560 Ventilator Replacement Battery, 25.2V, 4800mAh, Li-ion 1

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