Ni-MH AAA Rechargeable Battery: Replacement battery is designed for Panasonic cordless phones, 6-Pack BK-30AAABU rechargeable batteries are packed in a box; Voltage: 1.2V; Capacity: 300mah; Size:AAA | Fit for Panasonic Cordless Phones: AAA rechargeable batteries are designed for Panasonic cordless phones, KX-TG10xx series, KX-TG823x series, KX-TG63xx series, KX-TG93xx series, KX-TG43xx series, KX-TGF340/350/370/380 series, KX-TGA101/430/930/935 series, KX-TGF575S series, KX-TGE433B series, KX-TGF352N series, KX-TG1032/33/34, KX-TGDA52/51series KX-TGD562 / KX-TGD563 / KX-TGD564 series. etc | Rechargeable Battery: NI-MH Cordless Phone Battery can be recycled, rechargeable up to 2500 Times. Low self-discharge technology and high-quality batteries, which can prolong battery life, have a fairly low self-discharge rate which can reduce your costs, and are the ideal alternative to disposable batteries | Safety Material: NI-MH AAA Rechargeable Battery are made of environmentally friendly materials, do not contain harmful chemicals Hg/Cd/Pb which can reduce heavy metal pollution. And more suitable for wide use in everyday household devices that uses AAA batteries, such as cordless phones, remote controls, wireless mouse, portable audio players, personal digital assistants (PDA), shavers, electric toothbrushes, flashlight, toys and games | Usage Tips: AAA NI-MH batteries is precharged and you can use it directly, the best performance can be achieved after 3-4 times of charging and usage. Please check compatibility before purchasing.If you have any doubts about the cordless phones model used, or any other quality problem towords the battery please feel free to contact us