Replacement battery fits 190 Philips compatible models. Specifications: 750mAh, 3.7V, Li-ion. Compatible with: HX6711, HX6730, HX6731, HX6733, HX6910, HX6920 and 184 more compatible models. Replaces: Philips 036-11290, Philips 4222-036-06410, Philips 4222-036-11290. Philips replacement battery designed for Shaver devices. Simple plug-and-play replacement requiring no modification.