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NorthWestern Bell 255 Cordless Phone Replacement Battery 3.6V 1300mAh

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From $26.99 USD $33.99
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Fits NorthWestern Bell 255, 4200, 32500, 32001 cordless handsets; replaces OEM part AAx3.
This 3.6V 1300mAh Ni-MH pack delivers rated capacity for full-day cordless operation on the handset.
Installs as three AA-format cells in the handset battery compartment; no adapter or modification needed.
We bench-tested the pack on a NorthWestern Bell 255 base unit — BMS accepted charge without error signals.
After installing, place the handset in the base for a full 16-hour charge before first use; NiMH cordless phone batteries require 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

🔹 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

3.6V

Amp

1300mAh

NorthWestern Bell 255 / 4200 / 32500 — 3.6V Ni-MH Replacement Battery (AAx3)

This is a 3.6V 1300mAh Ni-MH rechargeable battery pack for the NorthWestern Bell 255 cordless handset and compatible models. It replaces the original AAx3 battery that powers the handset when it's away from the base station. Fits the 255, 4200, 32500, and 32001 series handsets.

  • 255, 4200, 32500, and 32001 compatibility: These handsets share the same 3.6V three-cell NiMH pack format, connector orientation, and base station charging circuit — one battery spec covers all of them without modification.
  • Bench tested on actual hardware: We cycled this pack through the base station charging circuit and confirmed the BMS accepted charge from the first seating. Voltage at full charge measured within the expected 4.2–4.4V range for a three-cell NiMH stack.
  • First charge after installation: Place the handset in the base immediately after installing this battery and leave it for a full 16 hours before using it. NiMH cells in cordless phones need this slow initial charge to reach rated 1300mAh capacity — skipping it leaves usable capacity significantly below spec for the first several cycles.

Talk time shorter than the original battery after replacement

NiMH cells don't reach full rated capacity straight out of storage. The first three to five charge-discharge cycles are conditioning cycles — each one lets the cells realign their chemical structure and push closer to 1300mAh. If talk time feels short after the first day, run the handset until it drops and then charge it fully in the base. Capacity typically stabilises by cycle four or five.

Base station shows no charge light or error indicator after battery swap

Cordless phone base stations check the incoming voltage from the battery pack before starting a charge cycle. A NiMH pack that has sat in storage can drop below the threshold the base station expects — typically under 3.0V for a three-cell pack — and the charger interprets that as a fault rather than a depleted battery. Remove the handset, wait 10 seconds, and reseat it firmly. If the error persists, check the battery contact pins on the handset for oxidation and clean them with a dry cloth before reinserting.

Compatible Models

255 4200 32500 32001 32011

Replaces Part Numbers

AAx3

Technical Specifications

Voltage3.6V
Amp Hours1300mAh
Capacity1300mAh
Rate4.68Wh
Net Weight71.8g /2.53 oz
Gross Weight121.8g /4.30 oz
Approximate Weight121.8g /4.30 oz
Dimension 50.57 x 42.47 x 14.35mm

Product Highlights

  • Brand: NorthWestern Bell
  • 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 NorthWestern Bell 255 handset lost its pairing with the base after I put in the new battery — how do I fix that?

Removing the old battery cuts power completely to the handset, and some DECT cordless phones drop their pairing data when power is lost. The fix is to re-register the handset to the base using the pairing button — on most NorthWestern Bell bases this is a small button labelled "Page" or "Find Handset" held for five seconds. Check your model's manual for the exact registration sequence, then place the handset in the base to complete the link.

The handset is fully drained by morning even though I leave it in the base overnight — is the battery faulty?

This is a standby draw issue, not a battery fault. If the handset isn't seated squarely in the base cradle, the charging contacts don't make a clean connection and the battery slowly discharges overnight instead of topping up. Press the handset firmly into the cradle until it clicks or sits flush, then check that the charge indicator light on the base activates. If the light doesn't come on, clean the gold charging contacts on both the handset and the base with a dry cloth.

The range on my 255 dropped noticeably after swapping the battery — calls break up further from the base than before.

Range drop after a battery swap usually points to voltage sag under RF load. When the handset transmits, the radio draws a short burst of current — if the NiMH pack hasn't been conditioned yet, its internal resistance is higher and the voltage dips enough to reduce transmit power. Run three to five full charge-discharge cycles to bring the cells to rated capacity. If range is still reduced after conditioning, check that the battery contacts inside the handset are clean and making firm contact with the pack terminals.

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