Chargie, created and developed by Ovidiu Sandru and offered by Lighty Electronics, makes USB charging limiters for phones, tablets and laptops. Its hardware physically stops and restarts charging according to settings in a companion app, helping users avoid keeping a battery at full charge for extended periods. Users can set a charge limit and restart gap, schedule overnight charging, and, on supported platforms, choose a temperature cutoff or automate connections at home, work or in a car.

Chargie offers three main models: a USB-A version for everyday phone charging up to 10W; a USB-C version for low-power phone charging up to 10W; and a USB-C Power Delivery model for compatible laptops, supporting up to 100W. The laptop app provides Full or Half Power controls, live power readings and weekly schedules on compatible Mac and Windows devices. App-based battery-percentage controls require a supported device and Bluetooth connection; some models also offer power-based limiting without the app.