The types segment classifies batteries by chemistry and form factor, each influencing device design, performance, and cost structure. Lithium‑ion (Li‑ion) cells dominate with an estimated 55% share, owing to their high energy density, low self‑discharge, and compatibility with high‑power hair‑styling tools; sub‑categories include 18650 cylindrical packs and button‑cell formats for compact facial devices. Nickel‑Metal Hydride (NiMH) batteries, comprising about 20%, are favored in mid‑range nail‑care units for their moderate capacity and established recycling pathways; typical formats are AA and rechargeable pouch cells. Lithium‑polymer (Li‑Po) batteries, representing roughly 15%, enable ultra‑thin skin‑care gadgets due to their flexible packaging, though they require sophisticated battery‑management circuits. Alkaline primary cells, still present at 7%, serve low‑drain accessories such as occasional epilators where replaceability outweighs rechargeability. The remaining 3% consists of emerging chemistries (e.g., solid‑state) still in pilot phases. This taxonomy clarifies how each battery type contributes to overall market dynamics and informs strategic sourcing decisions within the Beauty Instrument Battery market.