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The Most Intelligent Battery Health Protection for Phones & Laptops
🏆 #1 Since 2019
👥 60K+ Users
🌍 Worldwide
🏢 Trusted by Nokia Labs
Stop replacing batteries every 2 years. Chargie pays for itself in just 2 months — then saves you hundreds in replacement costs.
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🛡️ 30-Day Money-Back Guarantee • No Questions Asked
- ✓ Free shipping worldwide
- ✓ 30-day money-back guarantee
- ✓ 60,000+ happy customers
Created and developed by
Ovidiu Sandru
🛒 Choose Your Chargie
💼 Pro Choice
In Stock
⚡ Limited stock
Chargie for Laptops
Up to 100W • Windows, macOS, Linux & Chromebooks
Reduces replacement costs by 80%
🛒 Get Your Chargie Now — Start Saving Today!
Join 60,000+ customers who've extended their battery life by 4x
The Problem
You need it because your devices lose between 5 and 20% of their battery health per year
...due to prolonged charging. This is a proven fact.
💬 Talk to our AI about it
Charging on Autopilot
⚙️ How Does It Work?
Simply plug in Chargie between your charger and device. It automatically stops charging at your set limit, extending battery life by 4x.
1
Connect
Connect the Chargie device between your phone or laptop and charger or wireless charging pad.
2
Get the App
Download the Chargie app for iOS, Android, or Windows. Connect via Bluetooth and set your desired charging level.
3
Forget About It
Sleep. Work. Drive. Fly. Camp. Do your thing. Your charging process is covered.
Compatible with iOS 13+, Android 7+, Windows & Linux
Battery replacement: $150
Chargie: $35
Save $115+ Every 2 Years
The smartest investment for your devices — pays for itself in weeks.
15% OFF
// new year, new battery habits
⚡ + FREE smart cable with power display + FREE SHIPPING!
⏰ This week only — ends Sunday
Start Saving Now →
Inspired by Revolutionary Tech
🚗 Proven EV Battery Technology
Electric cars last 500,000+ miles because they never charge to 100%. The same science protects your phone and laptop.
Chargie automatically stops charging at your chosen level — preventing the heat and voltage stress that kills batteries. It's the easiest way to double or even quadruple your device's battery lifespan.
Our in-house developed firmware and app are based on scientific data and recommendations from battery manufacturers.
Read about the science behind →
🏢 Trusted by Nokia Labs
Nokia Labs in Romania chose Chargie to protect their development phones during intensive 24/7 testing cycles. Why? Because when you're testing phones around the clock, battery health is critical.
Chargie was the only solution that delivered both smart charging limits AND maintained USB data connectivity. If it's good enough for Nokia's R&D lab, it's good enough for your devices.
EXPLORE THE
Unique Features
Hysteresis Charge Cycles
Stops at your set limit, waits until battery drops 5%, then resumes. Prevents the constant trickle charging that degrades batteries.
Overtemperature Protection
Set your own temperature threshold (30-40°C recommended). Charging stops automatically when your phone gets too hot.
Hardware Limiter (No App Needed)
Protects any Li-ion battery without an app. Perfect for cameras, watches, drones, or phones that are turned off.
Overnight Charging Scheduler
Keep your phone at 50-70% overnight, then top up to 90% just before your alarm. Best of both worlds.
10W Slow Charging Mode
Limits USB-C power to 10W for gentler charging. Slower = cooler battery = 4x longer lifespan.
Android Auto / PC Passthrough
Maintains USB data connection while limiting charge. Use navigation, sync files, or mirror your screen without battery damage.
Multi-Location Auto-Connect
Place Chargies at home, office, and car. The app detects and connects automatically — seamless protection everywhere you go.
Works on All Platforms
Apps for iOS 13+, Android 6+, Windows 10+, and Linux. Works with iPhones, Samsung, Xiaomi, MacBooks, and any USB-C laptop.
An Actual Use Case
👥 Chargie Works for Real People
Robert (Kilburn, Australia): "We have kiosk booking devices, which are basically mobile phones, that we deploy to customers. These phones are on 24/7. Some phones would fail after a number of months with battery issues, due to being constantly on charge. We now use Chargies on all devices to better manage the charging cycle. This has substantially extended the life of our booking devices."
Fun fact: some people keep stealing Robert's Chargies (they're displayed in public places), so he keeps ordering new ones. We feel flattered people take the risk of stealing Chargie devices, but it's so sad it happens. To anyone involved, please don't do it any longer, theft is a bad thing.
Why Chargie Works
🔋 The Science Behind Active Charge Limiting
A typical smartphone charges up to 100% and then keeps the battery in that very high state (around 4.35 volts) until the user disconnects. The battery is protected from thermal runaway by its internal circuitry, but the measures taken happen at extreme values, not optimized for long battery life.
4x
Battery Lifespan Extension
250 → 1000+ cycles
30°C
Optimal Temperature
86°F threshold
80%
Recommended Daily Charge
Best for longevity
5%
Hysteresis Gap
Smart resume charging
Why All-Night Charging is Bad
Holding a 100% charge for many hours induces voltage- and heat-related stress and damages the internal lithium lattice at a molecular level. Limiting charge below 100% or releasing it once topped up has hugely beneficial effects.
An optimized charging process can take a normal phone battery from 250 cycles to more than 1000 before degradation.
Warm + Fully Charged = Dead Battery
A battery above 30°C (86°F) is elevated temperature. For most Li-ion, voltage above 4.10V/cell is high voltage. Exposing the battery to high temperature while at full charge for extended time can be more stressful than cycling.
Cycles Don't Tell the Whole Story
The damage each cycle does depends on depth of discharge, time of charge, and temperature. Five 40-60% cycles don't do the same harm as one 0-100% cycle then keeping it fully charged.
Introducing Hysteretic Charging
Besides limiting charging, Chargie's hysteretic algorithm makes sure that even if you charge to 100%, the process stops until the battery discharges to 95%, then restarts. This is way less stressful and dramatically prolongs lifespan.
Practically, keep charge between 20% and 90% for best results. By applying hysteretic charging, the risk of battery swelling and fires is greatly reduced.
Built for Real-World Conditions
🥇 Chargie Contains Gold (Au)
From rideshare drivers keeping their phones charged all day, to fleet vehicles, tractors, and emergency response units — Chargie works where reliability isn't optional. That's why we use gold.
🚕 Taxis & Rideshare
🚜 Agricultural Equipment
🚑 Emergency Vehicles
🚚 Fleet & Logistics
Every Chargie board and connector is plated with real gold — the ultimate corrosion-resistant finish.
Lead-free, oxidation-proof, and the gold standard (literally) for protecting copper traces.
Dust, humidity, temperature swings — your Chargie handles it all. Gold doesn't rust, ever.
New Hardware, Better Charging
👂 Your Feedback Was Heard
Our newly redesigned app, hardware and firmware are fully packed with new functionality:
🔋 Autonomous (appless) Charge Limiting
Now you can limit charging of any lithium ion battery, or a phone that's shut off. It cuts power at ~90% based on automatic power measurements.
🚗 Data Passthrough/Android Auto Mode
Chargie A GE and Chargie C Basic have a mode that doesn't cut power completely, so it works with Android Auto and USB tethering.
⚠️ Overcurrent Cutoff Protection
If your load consumes more power than it should, Chargie automatically cuts it off and restores it when rebooted.
📐 Smaller Form Factor
Chargie A GE is 25% shorter and 10% thinner than Founder Edition. Chargie C is even smaller.
🌙 Stealth Mode
LEDs are now configurable — they turn off automatically when your phone's screen turns off, reducing nighttime light pollution.
Invest in Your Phone
💰 Chargie Will Be Free After a Month of Usage!
To figure out how long it takes to recover the investment: divide the cost by the cost of replacing a $1,500 phone at 10% average yearly degradation.
$25 (Chargie) / $428.57 per year ≈ 0.06 years (less than a month)
If your phone cost $500, it'll take about three months. But the non-degrading battery experience will totally be worth it.
Read the entire article →
Sustainability
🌱 Chargie Makes Your Phone Greener!
The electronics industry is one of the greatest sources of pollution. Since 2015, phone manufacturers started gluing batteries inside phones, making them very difficult to repair once capacity depletes beyond comfortable usage levels.
From our calculations, Chargie has saved around 5,500 metric tons of CO2 since 2019. After you upgrade, you can donate your old phone to someone in need — that person may use it for many more years, preventing even more pollution.
Always On Devices
📱 Practical Use Cases
Phone Lifespan Extension
Just juice your phone through Chargie and in a few months you'll see the difference. Battery life will be like when it was new. We still have customers using the original 2019 Founder Edition every night!
Charging Safety
There have been cases where people sleeping with phones under the pillow died because the battery caught fire. 45% of parents and 30% of children sleep with devices plugged in. With Chargie's scheduler at 50%, fire risk is close to zero.
Always-Charging Demo Phones
Demo phones in shops stay connected to mains, destroying their batteries. After months they start swelling or catch fire. Chargie ensures partial charging, near-zero damage, and higher resale value.
Always-On Remote Surveillance
Phones used as surveillance equipment often run on solar power with batteries at 100% all the time. Risk of swelling, fire, and malfunctioning. With Chargie at 50%, fire risk is zero.
Taxi / Professional Navigation
Professional drivers use tablets as navigation for thousands of hours in direct sunlight. Hot batteries + full charge = dangerous. Chargie limits to 50%, greatly reducing damage and fire risk. Fleet management coming soon!
Basic Battery Protection
Chargie's hardware limiter protects regular batteries without smart capabilities. By measuring instant power and detecting thresholds, it cuts power without needing an app.
Real People About a Really Useful Device
🎬 Actual Customer Video Reviews
▶
Road Trips Made Easier with Chargie: A User Review by Christian
▶
Erick's two phone experience with Chargie
▶
Robert's opinion on Chargie
▶
Dorian's review of Chargie
▶
How Harry's Founder Edition worked over the years
▶
Marius's Chargie review (German)
▶
Alex's Chargie Review after a few years
We Deliver Since 2019
⭐ Customer Reviews
★★★★★"Upon morning awakening I remove my S10+ from the wireless charger confident it'll be at 70% state of charge. Chargie's simplicity has improved my quality of life."
★★★★★"Working perfectly. My old Sony phone had this feature built in, and this had best battery longevity of any phone I've had. New phone doesn't, so got a chargie."
★★★★★"I can't believe someone finally made this. I was monitoring my phone battery for years, and now it's just plug and play. I ordered 3, for my car, my office and my home."
★★★★★"I just started using this last night and I'm so excited! I think it's revolutionary - not only will this extend and preserve my phone's battery, I'm conserving energy!"
★★★★★"The product is a great idea! No one is currently doing what you're doing - other solutions all require rooting the phone, or things like WiFi smart plugs and IFTTT."
★★★★★"Fact is overcharging to a too high voltage and heat are the Li Batteries enemies. Your Chargie is the only device I found which do it right."
Big Guys Like Chargie
🏢 Notable Customers
All of our customers are notable people who chose to invest in an original technology and its early stage development. However, you may have heard about some of them.
Note: We are not affiliated with any of these companies. All logos are trademarks of their respective owners.
🇪🇺 Invented in Europe
The video below was shot on an actual production line of Chargie in Romania.
▶
❓ But doesn't my phone have this already?
It might, but if you want what's best for your phone's battery health, Chargie is the better solution. Phone manufacturers have only implemented very fixed charge limiting settings, if at all.
Chargie is the only device capable of scheduling and limiting the charging of a device to an extent that stock phone firmware will never be willing to do.
- You'll use Chargie for every phone you'll ever own
- It recovers its own cost in about 2 months
- Trusted by more than 50,000 users worldwide, since 2019
Enjoy that new gadget feeling for years, be it a phone or a laptop!
🛡️ Battery Protection Like It Should Be
2 Months ROI. Get your own Chargie
🚚 We ship fast
4-5 days average delivery time anywhere in the world, from our Shenzhen warehouse
🔒 100% Safe Payment
Top notch security (Cloudflare) and world's most reliable payment processors. We don't store sensitive payment details.
*EU Customers: VAT for many countries is variable and thus only added in the Checkout page.
🛒 Get Your Chargie Now
Secure payments via
Chargie is a hardware and software solution. Although it may look like this is just about the hardware device, thousands of hours of development and testing are continually invested in the app. Your purchase directly contributes to innovation, tooling and the evolution of this project.
Want to help us spread the word and earn a commission?
Write/talk about Chargie on your blog/YouTube video or post your affiliate link on a web page and we'll pay you 10% when your earnings exceed $100.
Generate your Chargie affiliate link →Active Charge Limiting with Hysteresis Cycles
The Science
Lithium-ion batteries degrade fastest when held at high voltage for extended periods. When your phone reaches 100% and stays plugged in overnight, it maintains a voltage of approximately 4.35V per cell — the maximum stress point for lithium chemistry.
What is Hysteresis?
Hysteresis is a control engineering technique that prevents rapid on/off switching. Instead of cutting power at exactly 100% and restarting immediately, Chargie waits until the battery drops to 95% before resuming charge. This creates a gentle "breathing" pattern rather than constant trickle charging.
Why It Matters
- Reduced chemical stress: The battery spends less time at maximum voltage, reducing lithium plating and electrolyte decomposition
- Lower heat generation: Trickle charging generates heat; hysteresis cycles keep the battery cooler
- Extended cycle life: Studies show batteries using hysteresis charging can achieve 3-4x more charge cycles before degradation
- Prevents micro-cycling: Without hysteresis, the charger would rapidly switch on/off, stressing both the battery and charging circuitry
4x
longer battery lifespan compared to standard charging patterns
Configurable Overtemperature Protection
The Science
Temperature is the #1 enemy of lithium-ion batteries. At elevated temperatures, the electrolyte breaks down faster, the SEI (Solid Electrolyte Interface) layer thickens, and irreversible chemical reactions accelerate exponentially.
The Arrhenius Equation
Battery degradation follows the Arrhenius equation: for every 10°C increase in temperature, chemical reaction rates roughly double. A battery charged at 45°C degrades approximately 4x faster than one charged at 25°C.
Why Factory Limits Aren't Enough
Most phones set their thermal cutoff at 45-50°C (113-122°F) — temperatures that already cause significant damage. This is because manufacturers optimize for charging speed, not longevity.
- Customizable thresholds: Set your own safe temperature limit (recommended: 35°C / 95°F)
- Real-time monitoring: Chargie reads your device's temperature sensors via Bluetooth
- Automatic pause: Charging stops immediately when threshold is exceeded
- Smart resume: Charging resumes only when the battery has cooled sufficiently
35°C
optimal charging temperature — vs. factory 50°C cutoff
Hardware Limiter
The Science
Most battery protection relies on software running on the device. But what about devices without smart capabilities, or phones that are powered off? Chargie solves this with a hardware-based power measurement system.
How It Works
Chargie contains a precision current sensor that measures real-time power flow. As a battery approaches full charge, its current draw naturally decreases (following the CC-CV charging curve). Chargie detects this "knee point" and cuts power — no app required.
Advantages
- Universal compatibility: Works with any USB-powered device — watches, cameras, Bluetooth earbuds, power banks
- No software dependency: Functions even when your phone is completely powered off
- Configurable threshold: Set the power cutoff point (default: 1.2W indicates ~90% charge for most phones)
- Fail-safe design: If Bluetooth connection is lost, hardware limiting continues to protect your device
1.2W
default power threshold — corresponds to ~90% charge level
Customizable Overnight Charging Scheduler
The Science
The worst thing you can do to a lithium battery is charge it to 100% and leave it there for 8+ hours overnight. This "calendar aging" or "storage degradation" occurs even without cycling — the high voltage state alone causes irreversible capacity loss.
The Storage Voltage Problem
At 4.2V (100% charge), lithium-ion cells lose approximately 20% of their capacity per year just from storage at room temperature. At 3.9V (60% charge), this drops to only 4% per year.
Smart Scheduling Benefits
- Optimized overnight state: Keep your battery at a healthy 50-70% while you sleep — the ideal storage voltage range
- Morning top-up: Chargie automatically begins charging before your alarm, so you wake up to a full battery
- Minimal high-voltage time: Your battery spends only minutes, not hours, at 100%
- Customizable timing: Set your wake-up time and desired charge level
5x
less degradation compared to leaving at 100% all night
USB-C Power Limited to 10W
The Science
Fast charging is convenient but comes with a cost. High charging currents generate heat through internal resistance (I²R losses), and this heat accelerates battery degradation. Slower charging keeps temperatures lower and extends battery life significantly.
The Heat-Current Relationship
Heat generated in a battery is proportional to the square of the current. Doubling charging speed quadruples heat generation. A phone fast-charging at 45W generates 20x more heat than one charging at 10W.
Why 10W is Optimal
- Thermal stability: 10W keeps most phones under 35°C during charging — the sweet spot for battery health
- Reduced lithium plating: Lower currents allow lithium ions to properly intercalate into the graphite anode
- Better for overnight charging: You're sleeping anyway — slower charging means healthier battery
- Consistent cell balancing: Slower rates allow multi-cell batteries to balance more effectively
2-3x
more charge cycles when charging at 10W vs. 45W fast charging
Data Passthrough Mode
The Science
USB cables carry both power and data on separate pins. Most charge limiters simply cut all connections when the limit is reached, breaking data connectivity. Chargie's intelligent design maintains the data lines while controlling only the power pins.
USB Architecture
USB-A has 4 pins: VBUS (power), D+, D- (data), and GND. USB-C has 24 pins including CC (configuration) pins. Chargie's data passthrough mode keeps D+/D- connected while switching only VBUS, preserving your data connection.
Use Cases
- Android Auto: Keep navigation running while protecting your battery — essential for professional drivers
- Apple CarPlay: Wired CarPlay requires data connectivity — Chargie maintains it
- USB tethering: Share your phone's internet while controlling charge level
- Development testing: ADB debugging sessions can continue while battery is protected
- File transfers: Transfer files while charging without interruption
480 Mbps
USB 2.0 data speed maintained in passthrough mode
Note: Data Passthrough Mode is available on Chargie A GE and Chargie C Basic models only.