Replacement Batteries for Panasonic Cordless Phones: Capacity: 400mAh, Voltage: 1.2V, Size: AAA; A box of NiMH AAA rechargeable batteries 1.2V, 4 sections,Widely used, suitable for most Panasonic cordless phones, such as: 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 TG823x series, KX-TG63xx series,KX-TGDA52/51series KX-TGD562 / KX-TGD563 / KX-TGD564 series etc. | Rechargeable Battery: BK-40AAABU battery is pre-charged, low self-discharge, NiMH AAA rechargeable batteries can be recycled, rechargeable up to 2500 times, and has a fairly low self-discharge rate, which can reduce your costs, is 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. | NiMH AAA Rechargeable Batteries: Tested, our battery capacity is sufficient,higher battery capacity, longer battery life.The energy density of NiMH battery is more than 1.5-2 times of NiCd battery, the power reserve is 30% more than NiCd battery, the battery capacity of the same volume is higher, and basically eliminates the memory effect, and the battery capacity will not become lower in long-term use, more durable. | 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.