--- product_id: 338765517 title: "5 Pcs 4.3V-27V Charging Discharge Module Adjustable Step Up Module+18650 Battery Holder with Red and black lines for 18650 Lithium Battery Fast Charging Boost Mobile Power Protection PCB Board" brand: "youmile" price: "113.77 DT" currency: TND in_stock: true url: https://www.desertcart.tn/products/338765517-5-pcs-4-3v-27v-charging-discharge-module-adjustable-step store_origin: TN region: Tunisia --- # 5 Pcs 4.3V-27V Charging Discharge Module Adjustable Step Up Module+18650 Battery Holder with Red and black lines for 18650 Lithium Battery Fast Charging Boost Mobile Power Protection PCB Board **Brand:** youmile **Price:** 113.77 DT **Availability:** ✅ In Stock ## Quick Answers - **What is this?** 5 Pcs 4.3V-27V Charging Discharge Module Adjustable Step Up Module+18650 Battery Holder with Red and black lines for 18650 Lithium Battery Fast Charging Boost Mobile Power Protection PCB Board by youmile - **How much does it cost?** 113.77 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/338765517-5-pcs-4-3v-27v-charging-discharge-module-adjustable-step) ## Best For - youmile enthusiasts ## Why This Product - Trusted youmile brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description 5 Pcs 4.3V-27V Charging Discharge Module Adjustable Step Up Module+18650 Battery Holder with Red and black lines for 18650 Lithium Battery Fast Charging Boost Mobile Power Protection PCB Board ## Features - 【Product use】：This module is made for charging rechargeable lithium batteries and Boost module. This module greatly simplifies the process of adding single cell Lithium battery power to your projects. - 【Various indices】：Input voltage: 4.5-8V; Charging voltage: 4.2V(Charge the 3.7V 18650 Lithium Battery); Charging current: up to 1A; Discharge current: the maximum 2A. - 【Product construction】：This product can build a 9v or 12v rechargeable power supply, with a micro usb as a DC 5v input interface. - 【Multimeter】：Can be used for multimeter, converted to lithium battery charging. VIN+ Port input 5V solar panels, BAT+ port can output 4.2V to charger 3.7V 18650 battery. - 【Overcharge protection】：When the input current reaches the limit flow rate of a certain module, the module will automatically turn on the overcharge protection function to prevent damage caused by overcharge ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | Youmile | | Part number | JK-YM-031 | | Item Weight | 65 g | | Package Dimensions | 18.8 x 8.8 x 2.2 cm; 65 g | | Item model number | JK-YM-031 | | Batteries included? | No | | Batteries Required? | No | ## Images ![5 Pcs 4.3V-27V Charging Discharge Module Adjustable Step Up Module+18650 Battery Holder with Red and black lines for 18650 Lithium Battery Fast Charging Boost Mobile Power Protection PCB Board - Image 1](https://m.media-amazon.com/images/I/71zfr6jBv2L.jpg) ## Frequently Bought Together - Youmile 5 Pcs 4.3V-27V Charging Discharge Module Adjustable Step Up Module+18650 Battery Holder with Red and black lines for 18650 Lithium Battery Fast Charging Boost Mobile Power Protection PCB Board - Youmile 5 pcs 18650 Lithium Li-ion Battery Charger Board 3.7V 4.2V to 5V/9V 1A DC-DC Step Up Boost Module Adjustable charge and discharge + 5 pcs 18650 battery box - Fasizi 10PCS Multifunctional DIY Mini DC-DC Lithium Battery Boost Module Step Up Board Converter 3.7V to 12V Voltage Regulator Adjust 5V/8V/9V LED Indicator --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/338765517-5-pcs-4-3v-27v-charging-discharge-module-adjustable-step](https://www.desertcart.tn/products/338765517-5-pcs-4-3v-27v-charging-discharge-module-adjustable-step) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-04-22*