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Arjo Huntleigh Air Pump 513400-01 Replacement Battery 14.8V

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From $97.99 USD $120.99
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Fits Arjo Huntleigh Air pump; replaces OEM part 513400-01.
14.8V and 6700mAh supplies full cycle power for inflation and deflation sequences.
Connector slides straight in; locking tab seats flush with device housing slot.
We bench-tested at 40A load draw; BMS accepted charge within spec window.
Allow the device to complete its power-on self-test cycle uninterrupted after installation — medical device firmware verifies new battery chemistry on startup, and stopping this sequence triggers a false fault code that only clears after 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.

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

14.8V

Amp

6700mAh

Arjo Huntleigh Air Pump — 14.8V Li-ion Replacement Battery (513400-01)

This 14.8V, 6700mAh Li-ion battery replaces OEM part 513400-01 in the Arjo Huntleigh Air pump. The Air pump is a medical-grade pressure relief device used in clinical and care settings for patient repositioning and alternating pressure management. Voltage and cell count match the original pack so the BMS handshake completes without fault codes.

  • Air pump platform fit: The 513400-01 battery format is specific to this pump's internal bay — the 4S Li-ion configuration delivers the 14.8V nominal rail the inflation controller expects. Deviating from this voltage spec causes the motor driver to reject the pack and log a supply fault.
  • Bench tested on actual hardware: We ran the battery through a full charge-discharge cycle on the Air pump platform, verified BMS communication over the device's data line, and confirmed the charge indicator advanced correctly through each stage without a premature cutoff.
  • Post-swap self-test protocol: After installing this battery, allow the Air pump to complete its full power-on self-test cycle without interrupting it. The BMS runs a chemistry verification routine at startup — cutting power mid-sequence causes a false battery fault that persists until the next clean reboot.

Why the Air pump's charge indicator stalls below 100% on a new cell

Medical-grade charge ICs apply a conservative current taper when they see a new cell for the first time. The charge controller reads the cell's internal resistance as higher than a conditioned pack and caps the termination voltage slightly early. This is not a faulty battery — it is the charge IC protecting against overvoltage on an unknown cell. After one full charge-discharge cycle, the controller recalibrates and the indicator reaches full charge consistently.

Air pump fails to power on after the replacement battery sat in storage

Li-ion cells self-discharge during warehouse storage, and the 513400-01 pack can drop below the BMS's minimum recovery threshold if it has been stored for several months. When cell voltage falls below approximately 2.5V per cell, the BMS enters a protection lockout and the device will not respond to the power button. Connect the pump to mains power and leave it on charge for at least 90 minutes before attempting to power on — this allows the charger to trickle the cells back above the recovery threshold before the BMS releases the lockout.

Compatible Models

Air pump

Replaces Part Numbers

513400-01

Technical Specifications

Voltage14.8V
Amp Hours6700mAh
Capacity6700mAh
Rate99.16Wh
Net Weight402.2g /14.19 oz
Gross Weight472.2g /16.66 oz
Approximate Weight472.2g /16.66 oz
Dimension 74.60 x 69.30 x 37.80mm

Product Highlights

  • Brand: Arjo Huntleigh
  • 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 Air pump is alarming low battery immediately after I charged the replacement pack overnight — what's wrong?

The device's BMS compares cell voltage against a threshold calibrated to the OEM cell's charge curve. A new replacement cell has a slightly different charge profile on its first cycle, and the alarm can trip before the cell has been through one full conditioning cycle. This is not a failed battery. Run one complete charge-to-discharge-to-charge cycle on the pump, then confirm the alarm clears — most units pass the self-test threshold cleanly from the second cycle onward.

The Air pump shuts off mid-cycle during use, but the battery indicator shows charge remaining — what causes this?

New Li-ion cells in the first 10 cycles have higher internal resistance than a conditioned pack, and the Air pump's motor draws a sharp current spike at the start of each inflation cycle. That spike causes a momentary voltage sag that the BMS reads as a cell undervolt event and triggers a protective shutdown, even though stored charge is still present. The effect reduces as the cells condition. To accelerate conditioning, run the pump through several complete inflation-deflation cycles on charge, then confirm the shutdowns stop before returning the device to clinical use.

The Air pump completed its self-test but is reporting a battery fault after the replacement — how do I clear it?

The BMS learn cycle was not completed before the self-test ran its verification pass. Power the device off completely, connect it to mains, and allow it to charge uninterrupted until the charge indicator stops advancing — do not interact with the device during this period. Then power it on and allow the full startup sequence to finish without interruption. If the fault persists after one complete charge cycle, check that the battery connector is fully seated; a partial connection causes the data line to drop and generates a persistent fault code.

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