BT - 81H - On Air 2100 Cordless Phone Battery 3.6V 300mAh NiMH

BT On Air 2100 Cordless Phone Battery is a 3.6V 300mAh Ni-MH slim rechargeable battery pack and is the correct fitting replacement phone battery for the BT On Air 2100 cordless phone. This British Telecom On Air 2100 battery is made up 3x 4/5AAAA batteries inside a pack with two wires and a small connector plug.
We recommend when replacing your BT On Air 2100 batteries, connect the battery pack and charge the battery on the phone base for a minimum of 16 hours the first time you charge them. This ensures the best performance from your new battery.
Batteries that are compatible with the BT On Air 2100 phone include Uniross BC102163 81H battery, GP30AAAAH3BMX battery, T307 battery, Energizer CP24 and Varta T326 battery.
Specifications: 300 mAh 3.6V Ni-MH, 42 x 25 x 9mm
Connector: JST ZHR2 ( Rev )