In our latest electric toothbrush battery replacement guide we have dismantled the top-of-the-range Philips Sonicare DiamondClean model. The Sonicare DiamondClean toothbrush sold for up to £250 when first introduced, so it’s well worth repairing! The guide covers all DiamondClean HX9300 series toothbrushes, including the HX9330, HX9340, HX9350, HX9360 and HX9370 models (white, black, pink, purple, […]