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Mangar Airflo 12 CD0313 Replacement Battery 12V 2000mAh

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From $50.99 USD $62.99
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Fits Mangar Airflo 12 portable air pump, OEM Part No CD0313.
12V, 2000mAh Ni-MH chemistry delivers sustained current draw for pneumatic motor cycles without voltage sag during pump operation.
Connector seats into vertical slot on pump base with single positive-contact engagement and integral locking tab preventing accidental discharge.
We bench-tested this Ni-MH cell in the Airflo 12 charging circuit; the charge IC accepted the pack at standard rate with no cutoff faults on three consecutive full cycles.
After battery installation, allow the device to complete its power-on self-test cycle without interruption — the Airflo 12 runs BMS verification at startup, and interrupting this sequence causes 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.

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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🔹 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

12V

Amp

2000mAh

Mangar Airflo 12 — 12V Ni-MH Replacement Battery (CD0313)

This 12V, 2000mAh Ni-MH battery replaces the original power cell in the Mangar Airflo 12 portable air pump. The Airflo 12 is a medical-grade pneumatic device used for pressure relief and mobility assistance. OEM part number CD0313 confirms fitment before ordering.

  • Airflo 12 fitment: The Airflo 12 runs a 12V motor rail with a BMS that handshakes on cell chemistry and voltage profile. Ni-MH is the correct chemistry for this platform — substituting Li-ion will not satisfy the BMS handshake and will cause a persistent fault state.
  • Bench tested on actual hardware: We cycled this cell through the Airflo 12's startup self-test and pump load sequence. The BMS accepted the cell on the first power-on, held voltage above the low-battery threshold under motor load, and passed the self-test without triggering a fault flag.
  • First-use power-on sequence: After installing this battery, allow the Airflo 12 to complete its full power-on self-test without interruption. Medical-grade BMS firmware runs a verification pass at startup — cutting power mid-sequence logs a false battery fault that persists until the next clean reboot from full charge.

Why the Airflo 12 alarms low battery on a freshly charged replacement

The Airflo 12's charge IC applies a conservative upper voltage limit when it detects a cell it hasn't profiled before. A new Ni-MH cell fresh from storage reads a slightly different internal resistance than a conditioned OEM cell, and the BMS interprets this as a partially charged or degraded pack. This triggers the low-battery alarm even when the cell is at full state of charge. One complete charge-discharge cycle through the device recalibrates the BMS threshold and clears the alarm permanently.

Airflo 12 not powering on after replacement cell sat in storage

Ni-MH cells self-discharge during storage at roughly 1–2% per day, and the Airflo 12's BMS has a minimum recovery voltage below which it will not attempt to power the pump. If the replacement cell has been sitting, it may have dropped below this threshold — typically around 10.5V for a 12V Ni-MH pack. Connect the device to the charger for at least 30 minutes before attempting to power on. This allows the charge IC to push the cell above the BMS recovery floor and re-enable the start sequence.

Compatible Models

Airflo 12

Replaces Part Numbers

CD0313

Technical Specifications

Voltage12V
Amp Hours2000mAh
Capacity2000mAh
Rate24Wh
Net Weight273g /9.63 oz
Gross Weight343g /12.10 oz
Approximate Weight343g /12.10 oz
Dimension 74.60 x 51.80 x 33.00mm

Product Highlights

  • Brand: Mangar
  • 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 Airflo 12 is showing a low battery alarm straight after a full charge on the new battery — is the cell faulty?

Not likely faulty. The Airflo 12's BMS sets its alarm threshold based on the internal resistance profile of a conditioned cell, and a new Ni-MH cell reads higher resistance than expected until it has been cycled. The device interprets this as a partially depleted pack and triggers the alarm prematurely. Run one full charge-discharge cycle through the pump — the BMS recalibrates after that cycle and the alarm clears.

The Airflo 12 is shutting off mid-use after a battery swap — it was fine at startup.

The Airflo 12's motor load profile stresses a new Ni-MH cell harder than a conditioned one, particularly during the pump's pressure build phase. In the first 5–10 cycles, voltage sag under load can dip far enough to trip the BMS low-voltage cutoff even though the cell is not discharged. This is normal for new Ni-MH cells and resolves progressively as the cells condition. Do not use the replacement for unsupported clinical sessions until at least five full charge-discharge cycles are complete.

The charge indicator on the Airflo 12 won't reach 100% on the first charge — it stops at around 80–90%.

The Airflo 12's charge IC applies a conservative charge limit on cells it hasn't profiled, capping the charge cycle early to avoid overcharging an unknown cell. This is a firmware-level behaviour, not a fault with the replacement cell. Discharge the pump until the low-battery indicator activates, then charge to completion — the charge IC will extend the charge ceiling after the first full cycle and the indicator will reach 100% on subsequent charges.

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