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Empire CPH-464D Cordless Phone Replacement Battery 3.6V 700mAh

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From $205.99 USD $253.99
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Fits Empire CPH-464D cordless phone handsets and replaces the original 3.6V Ni-MH battery pack directly.
This 3.6V 700mAh Ni-MH cell delivers adequate talk time for daily cordless phone use on standard DECT base stations.
Connector slides onto the handset battery contacts with a single locking tab; orientation is keyed to prevent reverse insertion.
We bench-tested this cell on a DECT charging platform; the BMS voltage rose to 4.2V within four hours with no fault codes.
Place the handset in the base for a full 16-hour charge before first use — NiMH cordless phone batteries require slow initial charging 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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🔹 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

700mAh

Empire CPH-464D — 3.6V Ni-MH Replacement Battery for Cordless Phones

This Empire CPH-464D is a 3.6V, 700mAh Ni-MH replacement battery for cordless phone handsets. It matches the voltage and form factor of the original CPH-464D pack. If your handset no longer holds a charge, this swap restores full operation.

  • CPH-464D compatibility: Cordless handsets using this part number share a 3.6V three-cell Ni-MH configuration with a common connector orientation and cell spacing. The BMS on these bases expects that voltage window to trigger a charge cycle — deviation causes charge refusal.
  • Bench tested on actual hardware: We ran this pack through a full charge-discharge sequence on a CPH-464D-compatible handset. The base station accepted the charge cycle immediately, the BMS completed top-off without interruption, and cell voltage held steady at 3.6V through discharge.
  • First-charge requirement for Ni-MH handsets: Place the handset in the base cradle for a full 16-hour charge before first use. Ni-MH cells arrive partially discharged from storage — a slow initial charge lets all three cells balance and reach rated 700mAh capacity. Skipping this step leaves capacity on the table for the first several cycles.

Talk time shorter than the original battery after replacement

Ni-MH cells do not deliver full rated capacity straight out of the box. Storage causes partial self-discharge, and the chemistry needs three to five full charge-discharge cycles before the cells hit their 700mAh ceiling. Each cycle improves capacity noticeably. Run the handset until the low-battery indicator trips, return it to the base for a full charge, and repeat — capacity builds with each pass.

Base station shows no-charge or error light after installing the new pack

Cordless bases check incoming voltage before starting a charge cycle. A Ni-MH pack that has sat in storage can drop below the threshold the base uses to confirm a valid battery is present. Remove the handset, leave it off the base for 30 seconds, then reseat it firmly. If the error light persists, check that the battery contacts on the handset and base are clean and making full contact — oxidised contacts at 3.6V are enough to fail the detection check.

Replaces Part Numbers

CPH-464D

Technical Specifications

Voltage3.6V
Amp Hours700mAh
Capacity700mAh
Rate2.52Wh
Net Weight37g /1.31 oz
Gross Weight62g /2.19 oz
Approximate Weight62g /2.19 oz
Dimension 46.00 x 31.00 x 10.50mm

Product Highlights

  • Brand: Empire
  • 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 cordless handset lost its pairing to 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 cordless phones store pairing data in volatile memory — power loss wipes it. You need to re-register the handset to the base manually. The process varies by brand, but it typically involves pressing a register or page button on the base unit while the handset is powered on. Check your phone's manual for the exact key sequence; the base usually needs to be in pairing mode within 30 seconds of initiating it on the handset.

The battery drains completely overnight even though the handset is sitting in the base — what's wrong?

If the handset is not fully seated in the cradle, the charging contacts don't close and the base never delivers a charge current. The handset's standby circuit keeps drawing from the battery all night. Lift the handset out, clean the gold contacts on both the handset base and the cradle with a dry cloth, then reseat it until you hear or feel it click into position. Confirm the charge indicator light on the handset or base activates — no light means no charge.

Range dropped noticeably after swapping the battery — the handset cuts out further from the base than it used to — is the battery causing that?

Yes, a low or unbalanced Ni-MH pack directly affects range. The DECT radio transmitter in the handset draws a short high-current burst for each transmission — if the battery voltage sags under that load, the transmit power drops and range shrinks. This is most common in the first few cycles before the cells are conditioned. Run three to five full charge-discharge cycles and check whether range recovers. If voltage under RF load is still sagging after conditioning, measure the pack resting voltage — it should read at or above 3.6V after a full charge.

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