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Frequently Asked Questions — USB Charge Limiter Help

Answers about Chargie USB charge limiters, 80% battery limits, Android Auto, CarPlay, laptop charging, and more.

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.

All Questions

Are you guys real? How do I know I’ll get what I ordered?

We’re live and kicking with this product since May 2019. We have development going on and our company, Lighty Electronics SRL (RO35245011) is legally incorporated and paying taxes in Romania, which is an EU country. Take a look at our Google Play page (https://play.google.com/store/apps/details?id=com.ble.chargie) to see other users’ feedback on our work. We ship fast via DHL (1-3 days anywhere in the world), or by regular post – takes longer but costs nothing to cheap.

Are current chargers not “smart” enough to handle charging the proper way?

Chargers are as smart as their manufacturers want them to be. Obviously, when you wake up in the morning the phone is still at 100% which means the charger didn’t do any charge limiting on your battery. If the battery is also a bit warm, they also didn’t do any proper temperature protection either. So short answer is no, chargers are not that smart. They’re only designed to protect batteries from extreme conditions like fires.

Is there an app for iOS, too?

Yes, there is an iOS app. You can preview its functions even before you have the Chargie device, here: https://apps.apple.com/gb/app/chargie-phone-charge-limiter/id1559014917

Is Chargie waterproof?

No. And water shouldn’t even be near high-voltage power outlets. We strongly discourage the usage of Chargie in an environment with more than 80% humidity. 

Does Chargie contain a battery?

Chargie does not contain any type of battery. It just forwards data and power lines in a USB cable from the power source to the smartphone. The only moment in which Chargie intervenes on the charging process is when it has to interrupt it, as instructed by the user.

Does Chargie alter the charging current of my phone?

There’s no point in controlling current. That is a function of the phone and is done according to many parameters that only the internal phone electronics have access to.
Chargie only switches power on and off according to temperature, state of charge and scheduling. It’s enough. 

Of course, there may be a slight current drop but it’s due to the extra contact points added by the Chargie device. However, starting with Chargie A GE, all connectors and internal traces are gold-treated, so that the power loss is minimal. 

There may be another case where your charger is PD (Power Delivery) but you have a Chargie A device. Since USB 2.0 is not compatible with PD, you may only see charging currents of about 1.4 – 2.7A, but that’s good. High currents damage the battery quicker due to heat production.

Is there any way Chargie can work without the app?

Starting with Chargie A, all of our devices carry current-measuring capabilities. Chargie Founder Edition did not. 

You can use the Hardware Limiter function in the Chargie app to set up the power threshold at which the Chargie device will cut off charging by itself, without needing the app. 

This will make it usable with all kinds of batteries or battery-powered devices, not just phones. So, for example, if you have a mobile speaker that’s sitting plugged in all day you may use the Hardware Limiter function in the Chargie app to cut off at, say, 2W, and check if it still needs charging every 2 to 6 hours.

What is Chargie’s case made of?

Chargie’s casing is made from 3D-printed resin. We strive to make our products from materials that are as eco-friendly as possible, since being green is one of our biggest aims with this device. 

What is the maximum current and voltage that Chargie can bear?

Chargie can be powered up at 16 Volts and 10 Amps. Practical values used in phone charging won’t reach those values. Anything beyond that can and will ruin the device and will void your warranty. Chargie logs maximum usage limits all the time. If you only use it to charge up your phone with a suited charger, you should be good for an indefinite period of time.

What are the delivery charges for orders from the Online Shop?

Depending on the delivery address and the carrier used, shipping costs from nothing to a few euros inside the EU.

For remote destinations, pricing changes according to the carrier. Please refer to the Checkout page to find out how much you’ll pay for shipping.

Which payment methods are accepted in the Online Shop?

We accept Paypal and all other major credit card providers through our partners’ secure payout gateway.

How long will delivery take?

– DHL: 1-7 days. US/East coast and Europe get it the next working day, rest of the world 3-4 days. Remote area deliveries may take a week. Please consult the actual tracking number you receive for DHL’s official estimated delivery date.

– Regular post: anywhere between 10 days to a month, depending on where you live. 

Current Covid-19 restrictions may delay your regular post shipping to a month.

Post transit times are unfortunately and understandably beyond our control. We do our best to ship as quickly as possible.

How secure is shopping in the Online Shop? Is my data protected?

The Chargie shop uses an industry-standard security system in what regards the connection between our server and your computer. Your card data is processed 3rd party secure payment processors like PayPal or PayLike. No card data is kept on our servers, nor do we have access to it.

Do I receive an invoice for my order?

If you need an invoice for your company, please find it here: https://chargie.org/get-your-invoice/

Do you have any laptop Chargie plans? If so, when do we expect one?

We are working on a 100W USB-C PD Chargie hardware version. It it primarily targeted at MacBooks and Windows/Linux machines.

What’s the difference between Chargie A GE and Chargie C Basic?
The two are basically the same as a working principle. The C variant deals with PD chargers and makes them limit power to some 8W. Chargie A only has USB-A connectors and is better suited for older phones whose power bricks have such connectors themselves.

Any Question ?

We will answer any other question from anyone regarding our product as fast as possible.
And, if lots of people ask it, we’ll post it on this page.


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