Your Phone's Battery
Every Time You
- you know them already -
the first device to
Redefine Phone Charging
Chargie is a USB device that stops phone battery degradation by smartly managing the charging process,
while you sleep.
Simply put, it "pulls the plug" automatically when the charge reaches your desired level, and then restores it a few percentage points lower (hysteresis).
This science-backed technique allows you to enjoy the same battery capacity for your phone’s entire life cycle.
And there’s more.
easy as pie
How do I use it?
1. Connect your Chargie between the charger and phone.
2. Install the app
3. Connect to it and slide to set the charging limit in the app.
4. Go to sleep
Chargie is the only device on the market that has the ability to fully manage any phone's charging process without voiding its warranty.
how chargie works
The Science Behind
A regular phone typically charges up to 100% and then keeps the battery in that very high state (around 4.35 volts) until the user pulls the plug. Indeed, the battery is protected from overcharging by its internal circuitry (it would catch fire otherwise), but not in an optimal way.
Actually, the way most phone manufacturers charge their devices’ battery is far from optimal. They just don’t care much about lifespan, since phones are thought to be disposable after the next version gets released.
Why Nighttime Charging is Bad for Your Battery
Constantly keeping the charge level to 100% every night (trickle charging) induces a voltage-related stress and damages the internal lithium lattice of the battery, at a molecular level.
Limiting charge below 100% or releasing it once it has topped up has hugely beneficial effects for the lifespan of the battery. An optimized charging process can take a normal phone battery from 250 cycles to more than 1000, before it shows signs of degradation (table courtesy of batteryuniversity.com ).
This has been well documented by the scientific community. Electric car manufacturers like Tesla already avoid charging to 100% by default. They say it’s fully charged, but it’s actually less. Microsoft has even implemented charge limiting in Surface tablets , Sony in latest-generation Xperia and Lenovo in laptops. Apple recommends you do not charge your phone fully every night.
Chargie does more than charge limiting
Besides limiting the charging process, Chargie’s hysteretic algorithm (see what hysterestic charging is) makes sure that even if you charge to 100%, the process is stopped until the battery discharges down to 95%, and then restarted. This is way less stressful for the battery and dramatically prolongs its lifespan. You can adjust the allowed discharge percentage manually from the app’s Settings menu.
Practically, it is best if you only charge to 90%. If you do so, Chargie’s default hysteresis is 1%, and will yield much better results in the long run, from both a lifespan and daily usability perspective.
Ideally, the lower the daily charge, the better it is for the battery.
By applying hysteretic charging, the risk of battery swelling and fires is greatly reduced (unless the battery itself has a physical defect). Read more about it on Google.
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Chargie Founder Edition – Red
Researchers recently found out that charging your phone every night to 100% and keeping it this way for 8 hours stresses the battery and shortens its lifespan.
Chargie is the only Bluetooth switch that physically halts the charging process to your chosen value (the lower, the better), so you can actually use your phone for up to 10 years without noticeable battery drop.
Proudly made by a small startup in Europe
We take our business very seriously, have
ultra-quick deliveries & passionate support.
*same-day dispatch if ordered during a weekday (Mon-Fri, 8am – 3pm EEST), except local legal holidays
What Customers Use Chargie For
Features and Tech
Chargie relies on Android, Bluetooth and a powerful 4.8A electronic switch to deliver current from the charger to the phone, and to stop it when the charge level has reached the desired value.
Here are some of its unique characteristics:
What Actual Customers Say
- you can check these reviews are real by visiting the Google Play app page -
Service & Warranty
If you use it properly (don’t overload), Chargie will last a lifetime. However, should you have any issues, we’re here to help by repairing or replacing your defective unit, for free, in the first two years.
If for whatever reason you’re not satisfied with Chargie within 30 days, just ask for a refund.
*if ordered during a weekday (Mon-Fri, 8am – 3pm EEST), except local legal holidays
** in case of refund request, you have to return the product via regular post. We will refund you the product price minus the shipping fees we paid to the carrier.
Message from the founder
Building something from scratch is not an easy thing.
You don’t really know what it’s going to look like, how it’s going to behave, what the real challenges are, but that’s the game.
No matter how much you think you know about your product, truth is you only have an idea about it.
Your product grows up with you, takes you back and forth, left and right. It hits you against the wall and then comes back even better, each time.
That’s why creativity and entrepreneurship are embraced by a few crazy ones who either have the guts or the unconsciousness to pursue their lifelong dreams at the risk of everything.
Money is just a tool for them, anyway.
Ovidiu Sandru, founder
Photos (c) Ovidiu Sandru, Alena Koval/Pexels