--- product_id: 616294223 title: "Universal USB/DC/Solar Lithium Ion/Polymer Charger - bq24074 Adafruit 4755" brand: "adafruit" price: "€ 0.01" currency: EUR in_stock: false reviews_count: 1 url: https://www.desertcart.hr/products/616294223-universal-usb-dc-solar-lithium-ion-polymer-charger-bq24074-adafruit store_origin: HR region: Croatia --- # 5-10V DC input 3.7V/4.2V charging Solar panel compatible Universal USB/DC/Solar Lithium Ion/Polymer Charger - bq24074 Adafruit 4755 **Brand:** adafruit **Price:** € 0.01 **Availability:** ❌ Out of Stock ## Summary > πŸ”Œ Power Up Anywhere, Anytime! ## Quick Answers - **What is this?** Universal USB/DC/Solar Lithium Ion/Polymer Charger - bq24074 Adafruit 4755 by adafruit - **How much does it cost?** € 0.01 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/616294223-universal-usb-dc-solar-lithium-ion-polymer-charger-bq24074-adafruit) ## Best For - adafruit enthusiasts ## Why This Product - Trusted adafruit brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Compact & Lightweight:** Weighing only 11g, it's the perfect travel companion. - β€’ **Dual Input Capability:** Simultaneously connect USB and DC for seamless charging. - β€’ **LED Status Indicators:** Stay informed with power and charging status at a glance. - β€’ **Smart Efficiency Tracking:** Automatic current tracking maximizes solar power usage. - β€’ **Versatile Charging Options:** Charge via USB, DC, or solarβ€”never be tethered! ## Overview The Adafruit 4755 Universal Charger is a lightweight, versatile charging solution for Lithium Ion and Polymer batteries, supporting multiple power sources including USB, DC, and solar panels. With smart charging technology and dual input capability, it ensures efficient energy use while keeping you informed with LED indicators. ## Description This charger is the only one you need to keep all your Lithium Polymer (LiPoly) or Lithium Ion (LiIon) rechargeable batteries topped up. No matter the power source at your disposal! The Adafruit Universal USB / DC / Solar Lithium Ion/Polymer Charger can use USB, DC or Solar power, with a wide 5-10V input voltage range! The charger chip is super smart, and will reduce the current draw if the input voltage starts to dip under 4.5V, making it a perfect near-MPPT solar charger that you can use with a wide range of panels. Even though we designed it with solar in mind, it's also great as a plain USB or DC charger - we like that you can use 5V or 9V chargers without worry, and the high charge rate is great for quickly charging up those large battery packs! Compared to our earlier, MCP73871-based charger this universal charger has some nice improvements: USB Type C port for modern computers and chargers Up to 1.5A charge rate Up to 10V input voltage, 28V protected Load output is regulated to never be over 4.4V so it's safe for 3.3V regulators or 5V boost converters No stabilization capacitor needed (although you can add one if you like!) Same load sharing so that DC/USB/Solar is prioritized over battery power when available, to keep the battery from cycling Power Good LED lets you know that the charger is working Less expensive However... The max load current is 1.5A instead of 1.8A There is no 'Done' LED - when the CHG LED turns off, thats how you know charging is complete This charger is a breeze to use for solar projects: pick up any of our many 3.7V/4.2V LiIon batteries, and a 6V solar panel. Plug the battery into the BATT port using a 2-pin JST cable and the solar panel into the DC jack using a 2.1mm adapter cable Put the solar panel outside (and keep the battery out of the sun, it needs to be kept cool!) to start charging. You can power another project at the same time by connecting to the LOAD output port, which will never go above 4.4V. Review: Works great with my ESP32 and Raspberry Pi Zero 2 W boards. ## Features - 3.7V/4.2V Lithium Ion or Lithium Polymer battery charger - Charge with 5-10V DC, USB or 6-10V solar panel, can have both USB and DC plugged in at the same time, higher voltage source will be used. - Automatic charging current tracking for high efficiency use of any wattage solar panel - Use any 6-10V solar panel - Two color indicator LEDs - Power good and Charging ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09K4V1Q15 | | Best Sellers Rank | 856 in Mobile Phone Solar Chargers | | Brand Name | Adafruit | | Connector Types | usb | | Current Rating | 1.5 Amps, 1.8 Amps | | Customer Reviews | 4.1 4.1 out of 5 stars (9) | | Input Voltage | 10 Volts | | Manufacturer | Adafruit | | Manufacturer Part Number | 4755 | | Model Number | 4755 | | Output Voltage | 3.7 Volts | | Specification Met | CE | | UPC | 642613767682 | ## Product Details - **Brand:** Adafruit - **Current rating:** 1.5 Amps, 1.8 Amps - **Input voltage:** 10 Volts - **Output voltage:** 3.7 Volts - **Specification met:** CE ## Images ![Universal USB/DC/Solar Lithium Ion/Polymer Charger - bq24074 Adafruit 4755 - Image 1](https://m.media-amazon.com/images/I/71kMPGQ-45L.jpg) ![Universal USB/DC/Solar Lithium Ion/Polymer Charger - bq24074 Adafruit 4755 - Image 2](https://m.media-amazon.com/images/I/71sSgQGvmEL.jpg) ![Universal USB/DC/Solar Lithium Ion/Polymer Charger - bq24074 Adafruit 4755 - Image 3](https://m.media-amazon.com/images/I/61w8Yh2V-3L.jpg) ![Universal USB/DC/Solar Lithium Ion/Polymer Charger - bq24074 Adafruit 4755 - Image 4](https://m.media-amazon.com/images/I/6184ac5DyPL.jpg) ![Universal USB/DC/Solar Lithium Ion/Polymer Charger - bq24074 Adafruit 4755 - Image 5](https://m.media-amazon.com/images/I/71Gz1oiPboL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by W***E on 12 March 2024* Works great with my ESP32 and Raspberry Pi Zero 2 W boards. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/616294223-universal-usb-dc-solar-lithium-ion-polymer-charger-bq24074-adafruit](https://www.desertcart.hr/products/616294223-universal-usb-dc-solar-lithium-ion-polymer-charger-bq24074-adafruit) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-16*