... Yes, I have also made the mistake and bought a cordless phone with 2x AAA batteries .... but the trend is back to the larger AA in the industry ... it's the easy-to-low capacity AA batteries ... Siemens to supply phones with 700mAh battery from: totally inadequate ... here are the Ansmann 1100 mAh ... I have done me, and finally holding the Accu in the phone 3-4 days instead of just one day when he will not be charged ... on long phone was füher never to think and I have almost my girlfriend angry -D ... the days are gone since I use these accus and a purchase of a new phone I have also saved. ... Great product = 5 stars ... at any time again