Buy a replacement Tomy Digital TF550 baby monitor battery pack here in the UK from a specialist battery company. It is ideal for the Tomy Digital TF550 baby monitor. This replacement Tomy TF550 (Y7574UK Y7574P) Digital Baby Monitor Battery pack replaces the original 2SN-AAA75H-S-J1 2.4V 750mAh battery. In fact, this battery offers a free upgrade to 800mAh. This mAh capacity is the amount of energy that the battery can store. Finally the Tomy TF550 battery connector plug, this brand new battery comes with the exact single connector plug and not a dual universal version.