--- product_id: 147693273 title: "Lithium Li-ion 18650 3.7V 4.2V Battery Charger Board DC-DC Step Up Boost Module" brand: "lolovi" price: "47.40 DT" currency: TND in_stock: false url: https://www.desertcart.tn/products/147693273-lithium-li-ion-18650-3-7v-4-2v-battery-charger store_origin: TN region: Tunisia --- # Max 1A charging current Compact 3.3x2.3cm size Adjustable 4.3-27V output voltage Lithium Li-ion 18650 3.7V 4.2V Battery Charger Board DC-DC Step Up Boost Module **Brand:** lolovi **Price:** 47.40 DT **Availability:** ❌ Out of Stock ## Summary > 🔌 Boost your battery game with precision power! ## Quick Answers - **What is this?** Lithium Li-ion 18650 3.7V 4.2V Battery Charger Board DC-DC Step Up Boost Module by lolovi - **How much does it cost?** 47.40 DT with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/147693273-lithium-li-ion-18650-3-7v-4-2v-battery-charger) ## Best For - lolovi enthusiasts ## Why This Product - Trusted lolovi brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Yet Mighty:** Ultra-small 3.3x2.3cm footprint fits seamlessly into any project - • **Power Your Innovation:** Supports 5V solar panel input for eco-friendly charging - • **Plug & Play Flexibility:** Simple integration with multimeters and DIY battery packs for on-the-go power - • **Precision Voltage Control:** Continuously adjustable output from 4.3V to 27V for versatile applications - • **Safe & Efficient Charging:** Optimized 4.2V charging voltage for 18650 Li-ion batteries ensures longevity ## Overview This Lithium Li-ion 18650 Battery Charger Board is a compact DC-DC step-up boost module designed to convert 5V input (e.g., solar panels) into a stable 4.2V output for safely charging 3.7V 18650 batteries. Featuring adjustable output voltage up to 27V and a max 1A charging current, it offers versatile, efficient, and portable power management for professional and DIY electronics projects. ## Description Features:100% Brand New and High QualityCan be used for multimeter, converted to lithium battery chargingFor example: VIN+Port input 5V solar panels, BAT+port can output 4.2V to charger 3.7V 18650 batteryNote: The OUT+Port can output an adjustable voltage.Specifications:Input voltage: 4.5-8V DCOutput voltage: 4.3-27V DC (Continuously adjustable)Charging voltage: 4.2V DCCharging current: Max. 1ADischarging current: Max. 2ASize: 3.3x2.3cm/1.3x0.91"Quantity: 1 PcNote:Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!No Retail PackagePackage Contents:1 x Step Up Boost Module ## Features - 【Material &Size】: Size: 3.3x2.3cm/1.3x0.91" - 【Note】:The OUT+Port can output an adjustable voltage. - 【Function& Use For】:Can be used for multimeter, converted to lithium battery charging. - 【Example】:VIN+Port input 5V solar panels, BAT+port can output 4.2V to charger 3.7V 18650 batter. - 【Others】：Charger board module,charger board module3.7V,battery charger board 4.2V. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07SFMKHXN | | Manufacturer | LOLOVI | ## Product Details - **Brand:** LOLOVI - **Input Voltage:** 3.7 Volts, 5 Volts - **Manufacturer:** LOLOVI - **Output Voltage:** 27 Volts - **UPC:** 694183296437 ## Images ![Lithium Li-ion 18650 3.7V 4.2V Battery Charger Board DC-DC Step Up Boost Module - Image 1](https://m.media-amazon.com/images/I/31TBS3AoSGL.jpg) ![Lithium Li-ion 18650 3.7V 4.2V Battery Charger Board DC-DC Step Up Boost Module - Image 2](https://m.media-amazon.com/images/I/417a3GnQMiL.jpg) ![Lithium Li-ion 18650 3.7V 4.2V Battery Charger Board DC-DC Step Up Boost Module - Image 3](https://m.media-amazon.com/images/I/419egRQrOvL.jpg) ![Lithium Li-ion 18650 3.7V 4.2V Battery Charger Board DC-DC Step Up Boost Module - Image 4](https://m.media-amazon.com/images/I/41QZYzY48CL.jpg) ![Lithium Li-ion 18650 3.7V 4.2V Battery Charger Board DC-DC Step Up Boost Module - Image 5](https://m.media-amazon.com/images/I/41c-Src+wdL.jpg) --- ## 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/147693273-lithium-li-ion-18650-3-7v-4-2v-battery-charger](https://www.desertcart.tn/products/147693273-lithium-li-ion-18650-3-7v-4-2v-battery-charger) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-16*