NiCd & NiMH batteries are interchangeable in cordless phones.
The original battery has been discontinued. This battery is slightly thinner than the original so you may have to use it with a piece of foam to stop it rattling around in your phone.

Outline	Type	Part #	Price	Order
	NiMH 3.6v 700mAh (NiMH batteries last longer than NiCd & have no memory retention)	CPH-464C	$16.50Cdn ($13.20US)	Quantity:

The above batteries will have different model numbers on the product pages since they are after market replacement batteries which are as good or better than the originals.  The current or mAh (milliamp hour) rating of a battery is an indication of the battery capacity or how long it will last on a charge, the higher the better.

There is a $7 Cdn ($5.60US) shipping and handling charge.
90 day warranty and no questions asked 1 month return policy.