Layer 1
Field & power backbone
Halo Base drives a 48-V resonant stage designed for laptop workloads, shaping a well-bounded field above the desk.
Technology • Charge Fog Inc.
Inside the 48-V Halo
wireless laptop power platform.
The system is simple on the outside: a hidden Halo Base under the table, ultra-thin Halo Pads on the surface, and standards-based USB-C Power Delivery on top — so laptops charge like they’re on their own brick, just without cables cluttering the desk.
Designed for long laptop sessions in homes, modern offices, airports, coworking spaces, and hospitality — places where people work for hours, not minutes.
Backbone
48-V laptop-class architecture
Output
USB-C PD 45–120 W
Deploy
Under-table install, no furniture swap
Three building blocks, one 48-V backbone
The Halo platform is built as a clean stack — each layer does one job well, so the user experience stays familiar (USB-C), while the power system stays controlled (48-V).
- Halo Base — the hidden under-table transmitter that shapes a controlled field above the desk or counter.
- Halo Pads — ultra-thin surface pads that capture the field and convert it back into efficient DC power.
- USB-C PD output — standards-based USB-C PD so devices behave like they’re on their own charger.
Install the Halo Base once, place pads where people actually sit, and the USB-C layer handles negotiation and protection — so the desk stays clean, and the power stays predictable.
Platform at a glance
Engineered from day one for laptops — stable, repeatable power delivery across real desks.
- Backbone
- 48-V DC architecture tuned for laptop-class power.
- Coverage
- Up to ~4 × 4 m per Halo Base (expandable with additional bases).
- Output
- USB-C PD classes from 45–120 W with predictable negotiation.
What quietly runs under the surface
Under the simple “drop your laptop and work” experience is a multi-layer system that manages field generation, power flow, USB-C negotiation, and control — tuned for real environments, not lab benches.
Layer 2
Halo Pads & conversion
Ultra-thin pads capture the field and convert it into efficient DC at the surface — quiet, stable, and thermally controlled.
Layer 3
USB-C PD output
Standard USB-C PD handshake makes laptops behave exactly as expected — no custom cables, no strange adapters.
Layer 4
Control, telemetry & fleet
The control layer supervises temperature, power limits, and events — designed to scale into pilots and larger deployments.
What Halo looks like in the real world
Clean desks. Shared tables. Classrooms. Pads on the surface, the base hidden away — and cables removed from sight.
A quiet, cable-free desk where the Halo Pad keeps the laptop and accessories topped up via USB-C.
Study hall tables with Halo Pads so students can plug in anywhere — without hunting for outlets.
A classroom where every seat has access to laptop-class power — integrated into the desk layout.
See the Halo platform in motion
A quick walkthrough of how the under-table Halo Base, surface pads, and USB-C layer work together across a real desk.
Watch how sessions start, how power flows from the 48-V backbone into USB-C, and how the system stays inside safe envelopes.
Safety is designed in, not bolted on
Halo is engineered to behave like a predictable, standards-aligned laptop charger — with layered protection for people, devices, and surfaces.
Field shaping & limits
- Controlled field footprint above the desk or counter.
- Power derating when conditions move outside safe envelopes.
- Automatic shutdown if surfaces exceed temperature targets.
Foreign-object awareness
- Sensing layers watch for metallic objects entering the field.
- Power reduces or cuts when unsafe objects are detected.
- Designed with real environments in mind (everyday items).
USB-C & device protection
- Standards-based USB-C PD handshake on every session.
- Over-current, over-voltage, and short-circuit protection.
- Clear limits per device class (laptops, tablets, accessories).
From understanding the tech to planning a rollout
Ready to talk pilots, deployments, or investment? We can help you map the right table coverage, power class, and rollout approach for your environment.