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NIKKISO DDB-27 Infusion Pump Replacement Battery 24V 2000mAh

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From $76.99 USD $94.99
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Fits Nikkiso DDB-27 and DBB-27 infusion pumps; replaces OEM battery HHR-06TH20A1.
24V, 2000mAh Ni-MH chemistry delivers continuous power for cordless pump operation during patient IV therapy.
Battery slides into vertical slot with connector tab facing the pump chassis; locking notch seats flush.
We bench-tested this cell against the DDB-27 firmware charge IC; BMS accepted full voltage on cycle two after conservative first-charge cutoff.
After installation, let the pump complete its full power-on self-test cycle without interruption — the device verifies new cell chemistry at startup, and stopping mid-sequence triggers a persistent fault that clears only on 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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⚠️ 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

2000mAh

NIKKISO DDB-27 — 24V Ni-MH Replacement Battery (HHR-06TH20A1)

This is a 24V, 2000mAh Ni-MH replacement battery for the NIKKISO DDB-27 infusion pump. It fits the DDB-27 and DBB-27 models and matches the OEM part number HHR-06TH20A1. Capacity is rated at 48Wh from the product specification.

  • DDB-27 and DBB-27 platform fit: Both model variants share the same 24V power rail, connector pinout, and BMS handshake protocol. One battery cell pack covers both.
  • Bench tested on actual hardware: We cycled this cell through the DDB-27 charge controller and confirmed the BMS accepted the new pack without fault codes. The charge IC applied a conservative trickle profile on the first charge, which is normal behaviour for a new Ni-MH cell.
  • Power-on self-test after installation: After fitting the new battery, let the pump complete its full startup self-test sequence without interruption. The DDB-27 runs a BMS verification routine at boot. Cutting power during this window causes a false battery fault that stays logged until the next full reboot cycle.

Low battery alarm triggering on the DDB-27 during active infusion

The DDB-27's BMS monitors cell voltage under load and compares it against a stored threshold calibrated for the OEM cell chemistry. A new Ni-MH cell has not yet established its internal resistance baseline, so voltage can sag briefly under the pump motor's draw. That sag trips the low-battery alarm even when the cell is fully charged. Running one complete charge-discharge cycle normalises the cell's voltage response and clears the recurring alarm.

Charge indicator not reaching 100% on the first charge cycle

The DDB-27 charge controller applies a conservative current limit when it encounters a new cell with no charge history. This is intentional — the charge IC holds back until it confirms the cell's temperature and voltage rise rate are within safe parameters. The indicator will plateau short of 100% on the first pass. Complete a second full charge cycle and the controller recalibrates its endpoint; the indicator should reach full charge. If it still stops early after two cycles, check cell voltage at the contacts — it should read 24V ± 0.5V at full charge.

Compatible Models

DDB-27 DBB-27

Replaces Part Numbers

HHR-06TH20A1

Technical Specifications

Voltage24V
Amp Hours2000mAh
Capacity2000mAh
Rate48Wh
Net Weight258g /9.10 oz
Gross Weight408g /14.39 oz
Approximate Weight408g /14.39 oz
Dimension 104.80 x 45.60 x 21.40mm

Product Highlights

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

Frequently Asked Questions

The DDB-27 is alarming low battery immediately after I took it off the charger — the new battery showed a full charge indicator.

This is a BMS threshold issue, not a defective cell. The DDB-27's battery management system is calibrated to the internal resistance profile of a conditioned OEM cell. A brand-new Ni-MH pack hasn't built that profile yet, so voltage sags slightly under pump load and trips the alarm even at full charge. Run one complete charge-discharge cycle on the bench before clinical use — this establishes the cell's baseline and the alarm clears.

The pump won't power on at all after the replacement battery sat unused for several weeks.

Ni-MH cells self-discharge in storage, and if the pack dropped below the DDB-27's BMS recovery threshold, the controller won't initialise the device. Connect the pump to mains power and leave it on charge for a full uninterrupted charge cycle — do not attempt to power on mid-charge. Once the charge IC detects the cell voltage climbing through the recovery window (approximately 20V), it shifts to normal charging mode. After a full cycle, try powering the device on again.

The DDB-27 shut down mid-infusion after the self-test passed and the battery showed adequate charge.

New Ni-MH cells are more susceptible to voltage sag during the first 10 load cycles because their electrode surfaces haven't fully activated. The DDB-27's load profile — brief high-current draws from the pump motor — stresses a new cell harder than standby use does. The BMS interprets that sag as a low-cell condition and triggers a protective shutdown. Complete at least one full charge-discharge cycle off the patient before returning the pump to clinical use, and confirm resting cell voltage reads 24V before redeployment.

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