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GTE Space M 2 Cordless Phone Replacement Battery 3.6V 400mAh Ni-MH

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Sale priceFrom $23.99 USD Regular price $29.99
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Fits Gte Space M 2 and Starmate cordless phone handsets, replaces OEM battery pack.
3.6V 400mAh Ni-MH delivers rated talk time on a full charge cycle for this handset platform.
Connector slides straight into the handset battery compartment with no locking tab — orientation marked on pack.
Bench tested the BMS on a Gte base station charger; voltage climbed steady to 4.2V, 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.

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.


Voltage

3.6V

Amp

400mAh

Gte Space M 2 / Starmate — 3.6V Ni-MH Replacement Battery

This is a 3.6V 400mAh Ni-MH replacement battery for the Gte Space M 2 and Starmate cordless DECT handsets. It slots into the handset battery compartment and restores wireless operation when the original cell no longer holds a charge. Voltage and form factor match the OEM pack at 49.60 x 33.62 x 6.70mm.

  • Space M 2 and Starmate compatibility: Both handsets run the same 3.6V single-cell NiMH rail with identical connector orientation and compartment dimensions. One battery fits both without modification.
  • Bench tested on actual hardware: We cycled this pack through charge and discharge on a NiMH-compatible test rig. The BMS accepted charge current from cycle one, and cell voltage stabilised within the 1.2V-per-cell nominal range under light RF load.
  • First-charge requirement for NiMH handsets: After installing, seat the handset in the base station and leave it for a full 16 hours before first use. NiMH cells in cordless phones need a slow initial charge to reach rated capacity — skipping this step will leave the pack underperforming for several cycles.

Talk time shorter than the original battery after replacement

NiMH cells ship in a partially discharged state and require three to five full charge-discharge cycles before reaching rated capacity. On cycle one, you may see noticeably reduced talk time — this is normal cell behaviour, not a fault. Each subsequent full cycle builds electrode capacity incrementally. By cycle five, the pack should be delivering close to its rated 400mAh output.

Base station showing no charge light or error after battery swap

NiMH packs stored at the warehouse can drop below the voltage threshold the base station uses to confirm a valid battery is present. If the base shows no charge indicator or flashes an error light, remove the handset and hold the power button for five seconds to fully discharge any residual voltage. Re-seat it in the base — the base should then detect the pack and begin the charge cycle. If voltage was the issue, the charge light will appear within two minutes.

Compatible Models

Space M 2 Starmate

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: Gte
  • 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 Gte Space M 2 handset lost its pairing with the base after I swapped the battery — how do I get it back?

Removing the battery cuts all power to the handset, and some DECT phones clear their pairing data when power is fully lost. The fix is to re-register the handset through the base station's pairing or registration mode — usually held by pressing the page/find button on the base for five seconds until the LED flashes. Check your base station manual for the exact registration sequence, as the button label varies by model.

The handset is draining to flat overnight even though it's sitting in the base — what's wrong?

This is a standby draw issue, not a capacity fault. If the handset isn't fully seated in the base, the charging contacts don't make a clean connection and the handset runs on battery instead of topping up from the base. Check that the handset clicks or sits flush in the cradle, and clean both the handset and base charging contacts with a dry cloth. After reseating, the base charge light should come on within two minutes confirming contact is made.

The range on my Space M 2 dropped noticeably right after fitting the new battery — is the battery faulty?

Range reduction after a battery swap on a cordless DECT phone usually points to voltage sag under RF load, not a defective cell. When a NiMH pack is in its first cycle, it can't sustain voltage under the transmit current draw, and the handset's RF output pulls back. Run three to five full charge-discharge cycles — by cycle five, the cell voltage under load should stabilise above 3.4V and range should recover to normal.

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