| Compact key-chain torch | 1–2 AAA alkaline or NiMH cells; some use an integrated lithium cell | 20–150 lumens | About 2–20 hours, depending on output and battery type | Wide flood beam; limited distance | Single tail or side button; low/high or on/off | Low-battery warning, lockout, reverse-polarity protection where supported | Everyday carry, finding items, short power outages |
| AA general-purpose torch | 1–2 AA alkaline, lithium primary, or NiMH rechargeable cells | 100–400 lumens | Approximately 3–40 hours across multiple modes | Balanced beam with moderate spill and throw | Rear or side switch; usually 2–5 output levels | Battery polarity protection, thermal regulation, and mechanical lockout on some models | Home emergency kits, walking, general outdoor tasks |
| C-cell or D-cell emergency torch | Alkaline or rechargeable NiMH C/D cells | 100–500 lumens | About 10–100 hours, depending on cell size and mode | Broad, stable flood beam | Large push button or twist head; simple operation | Impact-resistant housing, battery compartment sealing, and low-voltage protection where electronic regulation is used | Long-duration household emergencies and vehicle storage |
| 18650 rechargeable torch | One protected 18650 lithium-ion cell; USB charging may be built in | 300–1,500 lumens | Approximately 1.5–60 hours, depending on output and regulation | Focused spot with useful peripheral spill | Electronic side switch, tail switch, or both; multiple modes | Thermal step-down, over-discharge protection, charging status indicator, and lockout | Hiking, camping, property checks, and repeated outdoor use |
| 21700 high-capacity torch | One rechargeable 21700 lithium-ion cell; commonly USB-C rechargeable | 800–3,000 lumens | About 2–100 hours, depending on the selected mode | High-output spot, balanced beam, or selectable focus | Side electronic switch with mode memory or a dedicated tactical switch | Temperature regulation, charging protection, battery-level indicator, and accidental-activation lockout | Long trails, search tasks, severe weather, and demanding outdoor work |
| Dual-fuel outdoor torch | Accepts a rechargeable lithium-ion cell and/or common AA cells using an adapter | 200–1,200 lumens | Approximately 3–80 hours, varying substantially by power source | General-purpose beam with moderate throw | Tail or side switch; low, medium, high, and emergency modes | Reverse-polarity protection, voltage monitoring, thermal control, and lockout | Emergency preparedness when rechargeable power may be unavailable |
| Right-angle work torch | Rechargeable lithium-ion cell or replaceable AA/18650 cell | 150–1,000 lumens | About 3–70 hours across the available modes | Wide flood beam, often combined with a directional spot or red light | Top-mounted switch; pocket clip and magnetic base are common | Hands-free mounting, battery indicator, thermal control, and lockout | Repairs, vehicle work, shelters, and hands-free emergency tasks |
| Rechargeable lantern-torch hybrid | Built-in lithium-ion battery; charged by USB-C or another low-voltage USB input | 100–1,000 lumens in lantern mode; up to about 500 lumens in torch mode | Approximately 4–150 hours, depending on brightness and mode | 360-degree area light plus a forward-facing beam | Large buttons, rotary dimmer, or separate lantern and torch controls | Battery-level indicator, overcharge protection, low-voltage cutoff, stable base, and emergency red-light mode on some designs | Power cuts, indoor evacuation, campsites, and group lighting |