H
HumanCharger
Develops and markets portable bright light therapy devices for treating seasonal affective disorder and jet lag
About HumanCharger
Valkee Oy, the original company behind HumanCharger, was established in Finland in 2007 by scientist Juuso Nissilä and engineer Antti Aunio. Motivated by the long, dark winters in their native country, their goal was to develop a portable bright light device to address issues like Seasonal Affective Disorder (SAD). The founders' journey began with Nissilä, a student of animal physiology, exploring the idea that the human brain could be photosensitive, much like animals', and that light could be channeled through thin bones like the ear canal. Aunio, an engineer with a background at Nokia, was intrigued by the concept and collaborated with Nissilä to create a prototype.
The company's core business revolves around the direct-to-consumer sale of its proprietary light therapy device. The product, named HumanCharger, is a pocket-sized device with earbuds that deliver a UV-free, blue-enriched white light through the ear canals to light-sensitive regions of the brain. The business model focuses on a single product line, with revenue generated from the sale of these devices through its official website and other e-commerce platforms. The target market includes individuals affected by a lack of sunlight, frequent travelers combating jet lag, and shift workers with irregular schedules. In 2022, the product and brand were taken over by Humancharger.com ApS, a Danish company headquartered in Gilleleje, which now manages the business.
The HumanCharger device is designed for ease of use, requiring only a 12-minute session to deliver its potential benefits. It functions by stimulating photosensitive proteins on the brain's surface, which can help regulate the body's circadian rhythm. Key features include its portability, a rechargeable battery that lasts for at least 10 sessions, and a simple one-button operation. The company claims the device can increase energy levels, improve mood, and enhance mental alertness. Since its initial launch, the product has undergone several refinements, with a fourth version released in 2023, and wireless models with Bluetooth audio capabilities have also been introduced. Over 100,000 units have been sold since 2010.
Source: Dealroom company dataKnowledge graph
More headlines
Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| SUPPORT PROGRAMOther financing | Jan 2018 | — | — | VentureOut | — |
| SERIES A✓Equity / VC | Jun 2013 | $9.7M | $39M | Kristian Segerstrale · Jyri Engeström · Lifeline Ventures · Anssi Vanjoki | ↗ |
Growth signals
Latest recorded traffic for HumanCharger is 4.1K monthly website visits, down 52.9% over the last three months. HumanCharger's team declined 33.3% over the past year.
Similar companies
Company identity and context are open; selected comparison metrics preview what is available on the platform.
Investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Seed4 investors entered at this stage
Lifeline Ventures- JEJyri Engeström
Anssi Vanjoki
Esther Dyson
Series A1 investor entered at this stage
Kristian Segerstrale
Other known investors2 additional known investors
VentureOut
Innovestor
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about HumanCharger on X, ranked by likes and reposts, corporate channels excluded.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
See HumanCharger’s full profile on Dealroom
Request a free trial to see the complete deal history, financials, people graph and growth signals.
Takes under a minute. Already use Dealroom? Log in.







