Most Common Questions
How do I limit my phone or laptop battery to 80%?
Chargie is a hardware USB charge limiter that stops charging at any percentage you set (20-100%). Plug Chargie between your charger and device, set your limit in the app, and it automatically stops charging at your target level — even when your phone is off.
Can I use Chargie with Android Auto?
Yes! Chargie maintains full USB data passthrough while limiting charge. Use Android Auto navigation, stream music, and mirror your screen — all while keeping your battery at a safe level instead of constantly charging to 100% in a hot car.
Does Chargie work with CarPlay?
Yes, Chargie works with wired CarPlay. The USB data passthrough maintains your CarPlay connection while protecting your battery. Set your limit to 70-80% and use CarPlay without battery degradation.
Is Chargie for Laptops better than Lenovo Vantage or MyASUS?
Chargie for Laptops is a universal hardware solution that works with ANY USB-C laptop. Unlike OEM software (Lenovo Vantage, Dell Power Manager, MyASUS) that only works on specific brands, Chargie works at the hardware level — no software dependencies, works even when your laptop is off.
How do I limit battery charge to 80% on Windows 11?
Windows 11 doesn't have a built-in battery charge limiter. You need OEM software (like Lenovo Vantage) or a hardware solution. Chargie for Laptops is the only universal hardware option — works with any USB-C laptop, supports up to 100W, and doesn't require software.
Battery Health & Science
How do I check my phone's battery health?
On iPhone, go to Settings → Battery → Battery Health & Charging — it shows your maximum capacity percentage. On Samsung, go to Settings → Battery → Battery Health. On Pixel, check Settings → Battery → Battery Health. Most phones show battery health natively starting from Android 14. For laptops, use the Chargie app's real-time power monitoring, or check your OS battery report (Windows: powercfg /batteryreport, macOS: Option-click the battery icon).
What is optimized battery charging and how is Chargie different?
Optimized Battery Charging is a software feature (available on iPhone, Samsung, and Pixel) that learns your routine and delays charging past 80% until you need it. However, it only works when your usage pattern is predictable, it varies by manufacturer, and you can't set a precise limit. Chargie is a hardware solution that physically cuts power at your exact chosen percentage — it works with every device, every OS, and gives you full control including features like overnight scheduling and temperature protection that built-in solutions lack.
Can a damaged battery be restored to full capacity?
No. Lithium-ion battery degradation is a chemical process that cannot be reversed. Once capacity is lost, it's permanent — no app, calibration trick, or software update can restore it. That's why prevention matters: limiting charge to 80% and avoiding heat can slow degradation dramatically, keeping your battery healthy for 3–4 years instead of 1–2. Chargie is a preventive tool, not a repair tool.
Why does my phone get hot while charging?
Heat during charging comes from electrical resistance as current flows into the battery, and from the chemical reactions inside the cells. Fast chargers push more current, generating more heat. Using your phone while charging adds the processor's heat on top. According to Battery University, temperatures above 30°C accelerate battery aging. Chargie's overtemperature protection feature pauses charging when your phone exceeds your set temperature threshold.
Is fast charging bad for battery health?
Fast charging generates significantly more heat than standard charging, and heat is a primary cause of battery degradation. Research from Frontiers in Energy Research shows that high-power charging can cause 15–25% faster capacity loss. That said, occasional fast charging is fine — the real damage comes from doing it every day combined with charging to 100%. Using Chargie with a fast charger lets you get the speed benefit while capping the charge level.
Purchase & Compatibility
Do you ship worldwide? How much is shipping?
Yes, we ship worldwide from our warehouse in China with duties and taxes prepaid (DDP) — so you won't pay anything extra on receipt. Shipping is free on all orders. Standard delivery typically takes 5–12 business days depending on your location. Tracking is provided for every order.
Which Chargie should I buy — A, C Basic, or C for Laptops?
Chargie A (USB-A) is for phones and tablets that charge via USB-A cables — most common for older devices and wireless charging pads. Chargie C Basic (USB-C, low power) is for phones and tablets with USB-C charging. Chargie C for Laptops (USB-C, 100W PD) is for laptops and high-power USB-C devices. Not sure? Use our Which Chargie Do I Need? guide.
Can I use one Chargie for multiple phones?
Yes. One Chargie can be used with as many devices as you like — just plug in a different phone or tablet whenever you need to. The app supports multiple device profiles with different charge limits. However, Chargie can only charge one device at a time. For charging multiple devices simultaneously, you'd need one Chargie per device.
Does Chargie work with Samsung Galaxy phones?
Yes, Chargie works with every Samsung Galaxy phone — including the S series, A series, Note series, and Z Fold/Flip. For older Galaxy models with USB-A cables, use Chargie A. For newer Galaxy models with USB-C, use Chargie C Basic. Samsung's built-in "Protect Battery" mode only caps at 85% with no scheduling — Chargie lets you set any limit from 20–100% with overnight scheduling and temperature protection.
Does Chargie work with iPads and tablets?
Yes. Chargie works with iPads, Samsung tablets, Amazon Fire tablets, and any other tablet that charges via USB. Use Chargie A for tablets with Lightning or USB-A charging, or Chargie C for USB-C tablets. Especially useful for tablets used as kiosk displays, smart home controllers, or children's devices that stay plugged in 24/7.
Technical Details
How does Chargie work without root access or jailbreak?
Chargie is a hardware device that sits between your charger and your phone's cable. It controls power flow physically — by opening and closing a relay switch inside the device. The app communicates with Chargie via Bluetooth to set your preferences, but the actual charge limiting happens in the hardware. No root, no jailbreak, no system-level access required. This also means it works with devices that have no smart OS at all — like cameras, drones, or power banks.
What happens if my phone needs a full charge for travel?
Just set Chargie to 100% in the app — it will charge your phone fully like any normal charger. You can also use the overnight scheduler: keep your phone at 50–70% through the night, then set it to top up to 100% just before you wake up. When you're back home, switch back to 80% for daily protection. It takes about 3 seconds to change the limit.
Does Chargie use any electricity when not charging a device?
Virtually none. When no device is connected, Chargie's Bluetooth module draws less than 0.1W — negligible on your electricity bill. When a device is connected and charging is paused (limit reached), Chargie keeps the relay open and draws minimal standby power.
Is Chargie safe to leave plugged in 24/7?
Yes, that's exactly how it's designed to be used. Chargie includes overcurrent protection, overvoltage protection, and overtemperature monitoring. Thousands of customers leave their Chargies plugged in permanently. The device has no battery of its own and generates negligible heat. In fact, leaving Chargie plugged in is safer than leaving your phone charging without it — because Chargie prevents the high-voltage stress and heat that cause battery swelling and fire risk.
Where is Chargie manufactured?
Chargie is designed and engineered in Timișoara, Romania (EU) by Ovidiu Sandru, founder of Lighty Electronics. The PCBs are manufactured with gold-plated traces for durability, and final assembly and quality control happen in-house. Chargie has been shipping worldwide since 2019, with over 60,000 units sold to customers in 80+ countries.
All Questions
Are you guys real? How do I know I’ll get what I ordered?
We’ve been shipping since May 2019. Our company, Lighty Electronics SRL (RO35245011), is legally incorporated in Romania (EU). Over 60,000 customers worldwide. Check our Google Play page for reviews. We ship from our warehouse in China with duties and taxes prepaid (DDP) — free shipping, 5–12 business days delivery, nothing extra to pay on receipt.
Are current chargers not “smart” enough to handle charging the proper way?
No. When you wake up and your phone is still at 100%, that means your charger didn’t do any charge limiting. If it’s also warm, it didn’t do proper temperature protection either. Chargers are designed to prevent extreme failures like fires — not to optimize battery longevity. That’s what Chargie does.
Is there an app for iOS?
Yes. The Chargie app is available on the App Store. You can preview its features even before you have the Chargie device.
Is Chargie waterproof?
No. Water should never be near power outlets or charging equipment. We strongly discourage using Chargie in environments with more than 80% humidity.
Does Chargie contain a battery?
Chargie does not contain any battery. It forwards data and power lines through a USB connection from the power source to your device. The only time Chargie intervenes is when it cuts power at your set charge limit.
Does Chargie alter the charging current of my phone?
No. Chargie only switches power on and off based on temperature, state of charge, and scheduling. It doesn’t throttle current — that’s handled by your phone’s internal charging controller.
There may be a slight current drop due to the extra contact points, but with the Gold Edition’s gold-plated connectors and traces, power loss is minimal. If you’re using a PD charger with Chargie A (USB 2.0), charging current will be limited to about 1.4–2.7A — which is actually better for battery health since lower currents generate less heat.
Can Chargie work without the app?
Yes. All Chargie devices (A and C) have current-measuring capabilities and a Hardware Limiter mode. Set the power threshold in the app once, and Chargie will cut off charging by itself — no app connection needed after setup.
This also makes Chargie usable with non-smart devices like speakers, cameras, drones, or any battery-powered device. Set a power cutoff (e.g., 2W) and Chargie handles the rest automatically.
What is Chargie’s case made of?
Chargie is housed in a durable hard plastic enclosure — impact-resistant, lightweight, and built to handle years of daily plugging and unplugging. The compact form factor keeps it unobtrusive behind your nightstand or desk.
What is the maximum current and voltage Chargie can handle?
Chargie supports up to 16V and 10A. Standard phone charging stays well within these limits. Exceeding these values will damage the device and void your warranty. Chargie logs maximum usage values internally for diagnostics.
What are the delivery charges?
Shipping is free on all orders. We ship worldwide from our warehouse in China with duties and taxes prepaid (DDP) — you won’t pay anything extra on receipt.
Which payment methods do you accept?
We accept PayPal and all major credit cards through our secure payment gateway. No card data is stored on our servers.
How long will delivery take?
Standard delivery takes 5–12 business days depending on your location. We ship from China with all duties and taxes prepaid (DDP) — nothing extra to pay on delivery. Tracking provided for every order.
Is shopping on your site secure? Is my data protected?
Yes. Our shop uses industry-standard SSL encryption. Payment processing is handled by third-party providers (PayPal, Stripe). No card data is stored on or accessible from our servers.
Can I get an invoice for my order?
Yes. If you need a company invoice, you can generate one at chargie.org/get-your-invoice.
What’s the difference between Chargie A GE and Chargie C Basic?
Both work on the same principle — they physically cut power at your chosen charge level. Chargie A has USB-A connectors and is suited for phones with USB-A chargers and wireless charging pads. Chargie C Basic has USB-C connectors and works with PD chargers, limiting power to ~8W for phone-level charging. Not sure which one you need? Use our Which Chargie Do I Need? guide.
Still have a question?
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