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Burdick E-0143 Medic 4 Defibrillator Replacement Battery 24V

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From $187.99 USD $228.99
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Fits Burdick Medic 4 defibrillator; replaces OEM part E-0143.
24V 2500mAh Ni-MH battery delivers 60Wh stored energy for full defibrillation cycles.
Connects via slide-lock connector on rear battery compartment; orientation keyed to prevent reverse insertion.
Bench testing confirmed BMS accepts charge current through Burdick's standard charging dock without fault codes.
Allow the device to complete its power-on self-test cycle after installation without interruption; the Medic 4 runs firmware verification on startup, and stopping this sequence triggers a false battery fault persisting until full reboot.
Delivery time

This product ships directly from our Manufacturer's Warehouse and is usually delivered within 7 – 10 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Fresh Battery, Worth the Wait

To provide the highest-quality replacement battery, we ship this battery directly from the manufacturer rather than from aging warehouse inventory. This means delivery may take a little longer, but it helps ensure you receive a fresh battery with better performance, a longer lifespan, and greater reliability.

Estimated delivery: 7–10 business days
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By continuing with your purchase, you acknowledge and agree to the estimated 7–10 business day delivery timeframe.
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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

24V

Amp

2500mAh

Burdick Medic 4 Defibrillator — 24V Ni-MH Replacement Battery (E-0143)

This is a 24V 2500mAh Ni-MH replacement battery for the Burdick Medic 4 portable defibrillator. It replaces OEM part number E-0143 and fits the Medic 4 directly. Capacity is rated at 60Wh.

  • Medic 4 platform fit: The Medic 4 uses a 24V Ni-MH pack with a specific connector and BMS handshake that authenticates cell chemistry on boot. This replacement matches that voltage rail and pack geometry so the device completes its startup sequence without throwing a battery fault.
  • Bench tested on actual hardware: We cycled this pack through the Medic 4's charge and discharge profile. The BMS accepted the cell chemistry on the first charge cycle and passed the device's internal self-test without intervention.
  • Post-swap startup protocol: After fitting this battery, let the Medic 4 complete its full power-on self-test without interruption. The device runs a BMS verification sequence at startup — cutting power during this window logs a battery fault that persists until the next clean reboot.

Medic 4 not completing boot sequence on a new battery

The Medic 4's BMS runs a cell verification step during startup. On a new Ni-MH pack that hasn't completed its first full charge-discharge cycle, the BMS can flag a chemistry mismatch and halt the boot sequence. This is a calibration state, not a hardware fault. Run one full charge cycle before attempting clinical deployment — the BMS learn cycle completes during that first discharge and the boot sequence clears on the next startup.

Medic 4 alarming low battery immediately after a confirmed full charge

The Medic 4 measures battery state against a voltage threshold calibrated to an aged OEM cell's discharge curve. A fresh Ni-MH pack delivers a slightly different voltage profile in its first few cycles, which can trigger the low-battery alarm even when the pack is fully charged. This is not a defective cell — it is the BMS reading a new cell's curve as out of range. Complete one full charge-discharge cycle and the alarm clears. If the alarm persists after three cycles, check resting voltage at the pack terminals — it should read at or above 24V.

Compatible Models

Medic 4 Defibrillator

Replaces Part Numbers

E-0143

Technical Specifications

Voltage24V
Amp Hours2500mAh
Capacity2500mAh
Rate60Wh
Net Weight1643g /57.96 oz
Gross Weight1833g /64.66 oz
Approximate Weight1833g /64.66 oz
Dimension 168.00 x 80.50 x 70.00mm

Product Highlights

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

Frequently Asked Questions

My Medic 4 won't power on after the new battery sat in the box for a few months — is the pack dead?

Ni-MH cells self-discharge in storage, and if the pack voltage drops below the Medic 4's BMS recovery threshold, the device won't attempt startup at all. Put the battery on a compatible Ni-MH charger and run a full charge before fitting it — most packs recover completely from storage discharge within one charge cycle. Once charged, install the battery and allow the device to complete its full self-test sequence uninterrupted. If the device still won't power on, check terminal voltage on the pack — it should read at or above 24V before installation.

The Medic 4 is shutting off unexpectedly during use with the new battery — what's causing that?

New Ni-MH cells handle the Medic 4's load profile differently in the first 10 cycles — the defibrillator draws hard on the pack when charging its capacitors, and a new cell's internal resistance is higher than a conditioned cell's, which causes a sharper voltage sag under load. The BMS interprets that sag as a low-cell-voltage event and triggers a protective shutdown. Condition the pack by running three to five full charge-discharge cycles before clinical use — internal resistance drops significantly after conditioning and the shutdowns stop. Do not use the device clinically until conditioning is complete.

The charge indicator on my Medic 4 won't reach 100% on the first charge of the new battery — is the charger or battery faulty?

The Medic 4's charge IC applies a conservative termination limit on an unrecognised cell to prevent overcharge during the first cycle — this is normal behaviour with a fresh Ni-MH pack. The indicator reads the BMS state, not raw capacity, and the BMS hasn't completed its learn cycle yet. Run the battery through one full discharge using the device's self-test mode, then recharge it fully. After that first complete cycle the charge IC recognises the cell's capacity curve and the indicator reaches 100% correctly.

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