The Wahl 5 Star Cordless Detailer Li is a cord/cordless detail trimmer for barbers who live on the line: its extra-wide T-Wide blade adjusts to zero-gap, and the Pro-Set tool that sets it comes in the box rather than being bought separately. The blade measures 40.6 mm across, the Li-ion battery gives up to 100 minutes cordless, and it runs corded on the same lead. Made in the USA.
- Blade: High-precision extra-wide T-Wide blade, T-shaped, adjusts to zero-gap
- Blade width: 40.6 mm across the T
- In the box: Bonus Pro-Set tool, the tool that sets the blades to zero-gap
- Battery: Lithium-ion, up to 100 minutes of cordless run time
- Power: Cord or cordless; 100 - 240 V, 50 - 60 Hz
- Guides: 3 attachment combs, plus charging stand, blade oil and cleaning brush
- Built for: Facial hair detail and design, and crisp, clean lines; made in the USA
In the box
- Wahl Cordless Detailer Li trimmer
- Charging stand
- Power adapter with cord (charges the trimmer and runs it corded)
- 3 attachment combs
- Pro-Set tool for setting the blades to zero-gap
- Blade oil
- Cleaning brush
- Blade guard
Why the Cordless Detailer Li
A detail trimmer is judged on one thing: how clean a line it leaves. The Detailer Li goes at that with an extra-wide T-Wide blade, T-shaped so the corner reaches into a hairline or a beard edge, and adjustable to zero-gap - the blades set so close together that the cut sits right down on the skin. What separates this one is that the Pro-Set tool comes with it: the blades are set with the tool Wahl designed for the job, not by eye. The T is 40.6 mm across, and cordless it stays light for a day of line work, with up to 100 minutes on the Li-ion battery.
Key features
- Extra-wide T-Wide blade - T-shaped, so the corner works into hairlines and beard edges
- Blades adjust to zero-gap for an extremely close cut and a crisp line
- Bonus Pro-Set tool included - the tool that sets the blades to zero-gap
- 40.6 mm blade width for outlines and beard edges
- Lithium-ion battery, up to 100 minutes cordless
- Cord or cordless - drop the lead in when the battery runs low and keep working
- Charging stand, 3 attachment combs, oil and brush included; made in the USA
What to expect in the hand
Cordless and slim through the body, the Detailer Li is held like a pen rather than gripped like a clipper - the point when the work is a line rather than a length. The wide T covers the whole edge of a beard or a neckline in one travel, and the corner of the blade does the fine work at the temple and around the ear. Set to zero-gap it cuts extremely close, so the first pass tells you where the line will sit - go light until you know it. It drops onto its stand between clients.
Who it is for
- Barbers whose day is lineups, edges, necklines and beard design
- Anyone who wants the zero-gap setting and the tool to set it, in one box
- Barbers who want a cordless detail tool that also runs corded
- Experienced home users who shape their own beard and want a pro T-blade
Who it is not for
- Fading and blending - that is the Magic Clip Cordless job; this one lines, it does not fade
- Taking bulk length off the head - a detail trimmer is not a clipper, and the 3 combs are short
- Anyone who wants a full guide set in millimetre steps - this box holds three combs
- A first trimmer for someone who has never set a blade - zero-gap needs a careful hand
Professional tip
Use the Pro-Set tool and set the gap dry before the first line of the day, with the trimmer off and the blade clean - a blade set on a hair-loaded cut is set wrong. Bring the corner in first and let the wide T follow it, and keep the pressure light.
How to use
- Charge fully before first use on the stand or with the cord; the LED shows the charge state.
- Oil the blade: one drop at each end of the cutting edge and one in the centre; run briefly, wipe off the excess.
- Set the blades with the Pro-Set tool if you want zero-gap; work with the trimmer switched off.
- Outline with the bare blade - corner in, then the flat of the T - or clip on a comb for beard length.
- When the battery runs low, plug the cord in and keep working; back on the stand, it recharges.
Care and maintenance
Brush the hair out after each client and oil the T-Wide blade every day you use it - a drop at each end of the cutting edge and one in the centre - with the Wahl blade oil from the box; Wahl specifies its own oil, and a cleaning spray always gets a drop of oil afterwards, because it leaves the blade dry. Never soak the trimmer or blade in any solution: a dry blade is the usual reason a trimmer starts pulling, and that is felt first on a lineup. If you take the blade off, reset it with the Pro-Set tool rather than by eye. And for sectioning hair while you work, add the XanitaliaPro SalonPro hair clips.
In short
- Cord/cordless 5 Star detail trimmer with an extra-wide T-Wide blade
- Blades adjust to zero-gap; the Pro-Set tool that sets them is in the box
- 40.6 mm blade width for outlines, necklines and beard design
- Lithium-ion, up to 100 minutes cordless; cord or cordless; 100 - 240 V
- Charging stand, 3 attachment combs, oil and brush included; made in the USA
Complete your Wahl station
- Wahl Magic Clip Cordless Red - the fading clipper this trimmer finishes after
- Wahl Magic Clip Cordless Black - the same Magic Clip in black, with a titanium and DLC coated blade
- XanitaliaPro SalonPro hair clips - non-slip sectioning clips for the chair
Frequently asked questions
How long does the Cordless Detailer Li run, and can I keep working when the battery is empty?
Up to 100 minutes of cordless run time on the lithium-ion battery. Yes - it is a cord/cordless trimmer, so when the battery runs down you plug the supplied cord into the trimmer and keep working on mains power. Between clients it sits on its charging stand. If you have read a longer figure somewhere: the run time for this model is up to 100 minutes.
What does zero-gap mean, and how do I set it with the Pro-Set tool?
Zero-gap means the cutting blade is set as close to the fixed blade as it will go, with no overlap, so the cut sits right down on the skin and the line comes out sharp. The Pro-Set tool in the box is what sets it: with the trimmer switched off and the blade clean, you loosen the blade screws, seat the blade against the tool so both sides sit level, and tighten again. That is the whole reason the tool ships with the trimmer - setting a blade by eye is where most people go wrong.
Set to zero-gap, will it catch the skin?
At zero-gap the blade cuts extremely close, so it is less forgiving than a factory setting - that is the trade you make for a crisp line. Work with light pressure, keep the blade flat rather than digging the corner in, and take the first pass slowly on a new setting to learn where the line falls. If you want more margin, set the blade back off zero with the same tool, or clip on an attachment comb.
Can I use it abroad - do I need a voltage converter?
No converter. The trimmer and its adapter are rated 100 to 240 V at 50 to 60 Hz, so they work on any mains supply worldwide with a simple plug adapter for the socket. Charge it only with the Wahl adapter that comes in the box.
Is it only for lines, or can I fade and cut bulk with it?
It is a detail trimmer, built for facial hair detail and design and for crisp, clean lines - outlines, necklines, temples, beard edges. It is not the tool for fading or for taking bulk length off the head; the three attachment combs are short and the blade is a T, not a taper. Pair it with a fading clipper such as the Wahl Magic Clip Cordless and let each tool do its own job.
How often do I oil the T-Wide blade, and can I soak it to clean it?
Oil it every day you use it: a drop of the Wahl oil at each end of the cutting edge and one in the centre, then run the trimmer for a moment and wipe off the excess. Never dip or soak the trimmer or the blade in any cleaning solution, spray or oil - brush the hair out instead, and always oil again after a blade cleaning spray, because the spray leaves the blade dry. A dry blade is the usual reason a trimmer starts pulling.
What is in the box?
The Wahl Cordless Detailer Li trimmer, a charging stand, the power adapter with cord for charging and corded use, 3 attachment combs, the bonus Pro-Set tool for setting the blades to zero-gap, a bottle of blade oil, a cleaning brush and a blade guard.
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Wahl Cordless Detailer Li - 5 Star Cord/Cordless Trimmer with Adjustable T-Wide Blade
The Wahl barber station: the Detailer Li lines and details, the Magic Clip Cordless fades. Pick the tool you need.









