Professional foil shavers offer replaceable-cell options (examples include 2×AA alkaline, 2×AA NiMH, or a single AA lithium) and built‑in lithium‑ion rechargeable packs. Some travel-oriented models add USB charging for convenience, and many higher‑end shavers include a dedicated charger or charging base.

Runtime varies by model; typical runtimes are about 30–60 minutes per full charge or battery set. Some travel‑style models advertise extended runtimes (up to around 120 minutes) for longer use between charges.

Yes. Some foil shavers are rated for wet/dry use and are described as fully waterproof so you can use them with foam, gel, or in the shower. Other models are dry‑shave only — check the product’s waterproof rating before using it with water or shaving products.

Several models support quick‑charge boosts that provide enough power for a single shave after a short charge (commonly around a 5‑minute boost). These quick‑charge options are offered alongside longer full‑charge runtimes on rechargeable shavers.

Manufacturers often advertise hypoallergenic materials for sensitive skin, such as gold or titanium‑coated foils and hypoallergenic stainless steel blades. Some trimmers are described as using surgical‑grade steel for precise cutting.