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Description
The Streamlight SL-20L is a full-size rechargeable aluminium duty torch for police, fire and utility users who need a tight, long-range beam.
The SL-20L is a full-size professional duty light built on a machined aircraft-grade aluminium body, delivering 450 lumens and a tight beam that reaches 529 m on high.
Power comes from a 5-cell, 6.0 volt, 2.6 Ahr Ni-MH sub-C battery that can be recharged up to 1,000 times and fully recharges within 9 hours; this version is the 120 V/100 V AC variant, and an illuminated switch housing shows charge status.
The O-ring sealed polycarbonate lens carries a scratch-resistant coating, the light is IPX4 water-resistant and tested to 1 m impact resistance, and it measures 33.3 cm and weighs 0.77 kg.
Key features
- Long-range beam — On high the light produces 450 lumens and 70,000 candela for a beam distance of 529 m, giving down-range identification across open ground.
- Three output levels — High, medium and low provide 450, 225 and 60 lumens with run times of 3.25, 5 and 20 hours, so the same light covers searching and close work.
- Strobe mode — A strobe mode runs for 4.5 hours for signalling and scene marking.
- Rechargeable Ni-MH pack — The 5-cell, 6.0 volt, 2.6 Ahr Ni-MH sub-C battery is rechargeable up to 1,000 times, keeping running costs low over a long service life.
- Charge status indication — The illuminated switch housing indicates charge status, showing steady while charging and blinking once charging is complete.
- Nine-hour recharge — A depleted pack fully recharges within 9 hours, so the light can be back in service for the next shift.
- Machined aluminium body — The aircraft-grade aluminium case has a Type II anodised finish and an unbreakable polycarbonate lens with a scratch-resistant coating.
- Sealed and drop tested — The O-ring sealed light is IPX4 water-resistant and tested for 1 m impact resistance for daily duty carry.
Typical applications
- Police patrol and security rounds where a full-size duty light is carried on every shift.
- Fire and rescue crews searching buildings, basements and damaged structures.
- Utility and industrial maintenance work in plant rooms, substations and unlit yards.
- Roadside and vehicle checks where a long-throw beam is needed across open ground.
Technical specifications
| Light output | High: 450 lumens / 70,000 candela / 529 m beam distance / 3.25 hrs Medium: 225 lumens / 35,000 candela / 374 m beam distance / 5 hrs Low: 60 lumens / 9,000 candela / 189 m beam distance / 20 hrs Strobe: 4.5 hours run time |
| Battery | 5-cell, 6.0 volt, 2.6 Ahr Ni-MH sub-C battery, rechargeable up to 1,000 times |
| Charging | Illuminated switch housing indicates charge status; steady for charging and blinking for charging complete |
| Charge time | 9 hours |
| Body | Machined aircraft-grade aluminium with Type II anodised finish |
| Lens | O-ring sealed unbreakable polycarbonate lens with scratch-resistant coating |
| Ingress protection | IPX4 water-resistant |
| Impact resistance | 1 m impact resistance tested |
| Length | 33.3 cm (13.1 in) |
| Diameter | 6.35 cm (2.50 in) major diameter, 3.81 cm (1.50 in) body diameter |
| Weight | 0.77 kg (1.7 lbs) |
In the box
- 1 × SL-20L - 120V/100V AC
Model information
| Brand | Streamlight |
| Model | SL-20L - 120V/100V AC |
| MPN | 20701 |



