--- title: How do I know if the batteries are fully charged? description: With your DermapenWorld device, you were supplied a DermapenWorld Battery Charger. The DermapenWorld Battery Charger can charge 1 battery at a time. The green lights that appear on the charger when a --- [Skip to content](https://apphelp.dermapenworld.com/how-do-i-know-if-the-batteries-are-fully-charged#main-content) [![LOGO FULL COLOR](https://apphelp.dermapenworld.com/hs-fs/hubfs/LOGO%20FULL%20COLOR.png?width=350&height=42&name=LOGO%20FULL%20COLOR.png)](https://apphelp.dermapenworld.com?hsLang=en) Open main navigation Close main navigation - [Contact Us](https://www.dermapenworld.com/en-au/contact-us) [Contact Us](https://www.dermapenworld.com/en-au/contact-us?hsLang=en) Welcome, How can we help you today? - There are no suggestions because the search field is empty. 1. [DermapenWorld App](https://apphelp.dermapenworld.com/?hsLang=en) 2. [DermapenWorld App](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en) 3. [Batteries with Dp DOCK](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#batteries-with-dp-dock) # How do I know if the batteries are fully charged? With your DermapenWorld device, you were supplied a DermapenWorld Battery Charger. The DermapenWorld Battery Charger can charge 1 battery at a time. The green lights that appear on the charger when a battery is inserted indicate the level of charge. When no battery is inserted and the Battery Charger is connected to power, a Red light will appear. 1 Green light means the Battery is 1/5 charged. 5 Green light means the Battery is fully charged. ![](https://apphelp.dermapenworld.com/hs-fs/hubfs/image-png-Jan-13-2025-02-03-01-7624-AM.png?width=245&height=245&name=image-png-Jan-13-2025-02-03-01-7624-AM.png) A single Red light on the charger when a battery is inserted indicates a fault with the battery. ![](https://apphelp.dermapenworld.com/hs-fs/hubfs/image-png-Jan-13-2025-02-06-56-1832-AM.png?width=367&height=224&name=image-png-Jan-13-2025-02-06-56-1832-AM.png) - [DermapenWorld App](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#main-content) - [General](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#general) - [Home](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#home) - [Batteries with Dp DOCK](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#batteries-with-dp-dock) - [Dp DOCK Setup](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#dp-dock-setup) - [Bluetooth Setup](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#bluetooth-setup) - [Wi-Fi Setup](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#wi-fi-setup) - [For Professionals: Create Clinic](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#for-professionals-create-clinic) - [Register Pen](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#register-pen) - [Pen on Dp DOCK](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#pen-on-dp-dock) - [Pens](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#pens) - [For Professionals: Clinics](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#for-professionals-clinics) - [General - Login or Begin](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#general-login-or-begin) - [General - Begin Questions](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#general-begin-questions) - [Pens - Troubleshooting](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#pens-troubleshooting) - [Pen Details with Dp DOCK](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#pen-details-with-dp-dock) - [Pen Details without Dp DOCK](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#pen-details-without-dp-dock) - [For Professionals: Clinic Details](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#for-professionals-clinic-details) - [Account](https://apphelp.dermapenworld.com/dermapenworld-app?hsLang=en#account) - [EXO-GROW Cap](https://apphelp.dermapenworld.com/exo-grow-cap?hsLang=en) [![LOGO FULL COLOR](https://apphelp.dermapenworld.com/hs-fs/hubfs/LOGO%20FULL%20COLOR.png?width=350&height=42&name=LOGO%20FULL%20COLOR.png "LOGO FULL COLOR")](https://apphelp.dermapenworld.com?hsLang=en) Copyright © 2025, DermapenWorld