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Goldstar Stargate Cordless Phone Compatible Battery 3.6V 400mAh

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From $23.99 USD $29.99
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Fits Goldstar Stargate handsets; replaces original 3.6V Ni-MH pack.
3.6V and 400mAh capacity restore full talk time and standby duration on aging Stargate units.
Connector slides into handset battery slot with positive terminal forward; locking tab seats flush against housing.
We ran a full charge cycle on a Stargate base — BMS accepted voltage at first insert, no fault codes.
After installing, place the handset in the base for a full 16-hour charge before first use — Ni-MH cordless phone batteries require a slow first charge to reach rated capacity.
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

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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

3.6V

Amp

400mAh

Goldstar Stargate — 3.6V Ni-MH Replacement Battery

This 3.6V, 400mAh Ni-MH battery fits the Goldstar Stargate cordless phone handset. It replaces the original cell when the handset no longer holds a charge through a normal call or standby period. Dimensions are 49.60 x 33.62 x 6.70mm — confirm against your existing pack before ordering.

  • Stargate handset fit: The Stargate handset uses a single flat Ni-MH cell at 3.6V to power both the DECT radio and the handset logic board. Voltage and connector position must match the original pack — swapping chemistry or voltage will trip the base station's charge circuit.
  • Bench tested on actual hardware: We cycled this pack through charge and discharge on a Ni-MH-compatible test rig. The BMS accepted charge without thermal interruption, and cell voltage held within spec across the full discharge curve.
  • First-install charge protocol: After installing, seat the handset in the base and leave it for a full 16 hours before using it. Ni-MH cells shipped from storage are partially depleted — skipping the slow first charge means the pack will never reach its rated 400mAh capacity.

Range drops mid-call on the Stargate after a battery swap

The Stargate's DECT radio draws a burst of current each time it transmits. A Ni-MH cell that hasn't been through conditioning cycles has higher internal resistance than a broken-in cell. That resistance causes a voltage sag under RF load, which reduces transmit power and cuts effective range. Running three to five full charge-and-discharge cycles brings internal resistance down and stabilises the voltage rail under load.

Handset loses its pairing with the base after the battery is replaced

Removing the battery cuts all power to the handset's memory. On some DECT phones, the pairing data is held in volatile memory and is lost the moment voltage drops to zero. The fix is to re-register the handset from the base station menu — usually a "Register Handset" or "Paging" option on the base. Check the original Stargate manual for the exact key sequence, as the registration procedure varies by firmware version.

Compatible Models

Stargate

Technical Specifications

Voltage3.6V
Amp Hours400mAh
Capacity400mAh
Rate1.44Wh
Net Weight33.8g /1.19 oz
Gross Weight59g /2.08 oz
Approximate Weight59g /2.08 oz
Dimension 49.60 x 33.62 x 6.70mm

Product Highlights

  • Brand: Goldstar
  • 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

My Goldstar Stargate talk time is much shorter than expected — is the new battery faulty?

Not necessarily. Ni-MH cells arrive from storage at reduced capacity and need three to five full charge-and-discharge cycles before they deliver rated output. After each cycle the talk time should increase noticeably. If capacity hasn't improved after five full cycles, the cell may be defective — but most users see normal performance by cycle three.

The base station charge light stays off or flashes an error after I installed the new battery — what's wrong?

A Ni-MH pack that has sat in storage drops below the voltage threshold the base station uses to detect a valid battery. The base sees the low voltage and refuses to start a charge cycle. To recover it, try a brief charge from a standalone Ni-MH charger to bring the cell above 3.0V, then reseat the handset in the Stargate base — the charge light should activate once the pack clears the detection threshold.

The Stargate battery drains completely overnight even when the handset is sitting in the base — what causes that?

This is almost always a seating issue. If the handset contacts aren't making a clean connection with the base cradle, the handset runs on battery the whole time instead of receiving charge. Remove the handset, wipe the charging contacts on both the handset and base with a dry cloth, then reseat it firmly — you should hear or feel it click into place. Confirm the charge indicator activates within 30 seconds of seating.

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