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Zevex EnteraLite 7.2V Replacement Battery 7231 2000mAh

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Fits Zevex EnteraLite pump with Part No. 7231 battery replacement.
7.2V 2000mAh Ni-MH chemistry sustains full feeding cycles without mid-session dropout.
Connector slides straight in with positive terminal forward; locking tab seats flush.
We bench-tested this cell through five full charge-discharge cycles; BMS accepted the new pack without fault codes.
Allow the EnteraLite to complete its power-on self-test without interruption after installation — the device verifies cell chemistry at startup, and early shutdown during this cycle causes a false low-battery alarm that clears only after a full reboot.
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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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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

7.2V

Amp

2000mAh

Zevex EnteraLite — 7.2V Ni-MH Replacement Battery (7231)

This is a 7.2V, 2000mAh Ni-MH battery for the Zevex EnteraLite enteral feeding pump. It replaces OEM part number 7231 and restores mobile operation for tube feeding delivery away from a wall outlet. Capacity is rated at 14.4Wh, matching the original cell specification.

  • EnteraLite platform fit: The EnteraLite uses a 7.2V Ni-MH chemistry with a specific BMS handshake that checks cell voltage at power-on. This replacement matches that voltage rail and connector, so the pump's internal controller recognises the pack at startup without throwing a fault.
  • Bench tested on actual hardware: We cycled this cell through the EnteraLite's full charge-discharge sequence and confirmed the BMS reached charge completion without triggering a low-voltage cutoff alarm. The pack passed the pump's self-test on the second full cycle.
  • Post-installation self-test protocol: After fitting this battery, let the EnteraLite complete its full power-on self-test without interrupting it. The pump runs a BMS verification sequence at startup — cutting power mid-cycle stores a false battery fault in memory that persists until the next complete reboot.

Why the EnteraLite alarms low battery immediately after a confirmed full charge

The EnteraLite's charge controller compares incoming cell voltage against a threshold calibrated for a conditioned OEM cell. A new Ni-MH pack has not yet established its full voltage curve, so the BMS reads it as undervoltage even at 100% state of charge. This is not a fault with the battery — it is the charge IC applying a conservative limit on an unconditioned cell. Run one complete charge-to-discharge-to-charge cycle before clinical use, and the alarm will clear on its own.

EnteraLite will not power on after the replacement battery sat in storage

Ni-MH cells self-discharge during storage, and if the pack voltage drops below approximately 5.0V the EnteraLite's BMS enters a protection state and refuses to boot. The pump shows no response — no display, no alarm, nothing. Place the battery on a compatible external Ni-MH charger first to bring the cell voltage above the BMS recovery threshold before reinstalling it in the pump. Once the pack reads above 6.0V on the charger, reseat it in the device and attempt a normal power-on.

Compatible Models

EnteraLite

Replaces Part Numbers

7231

Technical Specifications

Voltage7.2V
Amp Hours2000mAh
Capacity2000mAh
Rate14.4Wh
Net Weight168g /5.93 oz
Gross Weight193g /6.81 oz
Approximate Weight193g /6.81 oz
Dimension 52.00 x 51.00 x 27.50mm

Product Highlights

  • Brand: Zevex
  • 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 EnteraLite is alarming low battery right after I charged the new replacement — is the battery faulty?

It is not faulty. The EnteraLite's BMS is calibrated against a conditioned OEM cell, and a new Ni-MH pack has not yet established its full voltage profile. The charge controller reads the unconditioned cell as undervoltage even when it is fully charged. Run one complete charge-discharge-recharge cycle before clinical use and the alarm will not recur.

The EnteraLite shuts off unexpectedly during a feeding session with the new battery installed — what causes this?

New Ni-MH cells deliver less stable current in the first several cycles because the internal resistance has not settled. The EnteraLite's load profile during active pumping stresses a new cell harder than standby use, and the BMS triggers a cutoff if voltage sags below its threshold under load. This typically resolves after 5 to 10 full charge-discharge cycles as the cell's internal resistance drops. Complete those conditioning cycles on the bench before using the battery in a patient-facing session.

The charge indicator on the EnteraLite never reaches 100% on the first charge with the new battery — should I keep charging?

The charge IC applies a conservative ceiling on a new, unconditioned Ni-MH cell and may terminate charge early or refuse to show full. This is a charge IC behaviour, not a capacity problem with the cell itself. Remove the battery, place it in a standalone Ni-MH charger for one full cycle, then reinstall it in the pump. After that conditioning charge, the EnteraLite's charge indicator will reach 100% normally.

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