Philips - Onis 200 , Onis 200 Handset, 200 VOX, Onis 300, 300 VOX, Onis - 5321, 5350, 5351, 5352, 5371, TD6326, 6626, 6726, DECT 225
Philips - Onis 200 , Onis 200 Handset, 200 VOX, Onis 300, 300 VOX, Onis - 5321, 5350, 5351, 5352, 5371, TD6326, 6626, 6726, DECT 225
NiMH 650 are compatible with 550, 600, 700mAh batteries

NiMH 850mAh batteries are compatible with 750 and 800mAh batteries