--- product_id: 745061450 title: "4 Socket 21750 21700 Battery Charger, 4 Socket Nickel-Hydrogen AA 18650 Charger 21700 20700 22700 22650 2650 26700 16340 (RCR 123) 17670 with PCB Protection Sheet Battery" brand: "sunlytour" price: "€ 39.54" currency: EUR in_stock: true reviews_count: 6 category: "Sunlytour" url: https://www.desertcart.pt/products/745061450-4-socket-21750-21700-battery-charger-4-socket-nickel-hydrogen store_origin: PT region: Portugal --- # Smart chip with reverse polarity & full-charge auto-stop 4 independent slots for versatile charging Dual USB input: Micro USB & Type-C for universal compatibility 4 Socket 21750 21700 Battery Charger, 4 Socket Nickel-Hydrogen AA 18650 Charger 21700 20700 22700 22650 2650 26700 16340 (RCR 123) 17670 with PCB Protection Sheet Battery **Brand:** sunlytour **Price:** € 39.54 **Availability:** ✅ In Stock ## Summary > 🔋 Power up smarter, not harder — charge like a pro with SUNLYTOUR! ## Quick Answers - **What is this?** 4 Socket 21750 21700 Battery Charger, 4 Socket Nickel-Hydrogen AA 18650 Charger 21700 20700 22700 22650 2650 26700 16340 (RCR 123) 17670 with PCB Protection Sheet Battery by sunlytour - **How much does it cost?** € 39.54 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/745061450-4-socket-21750-21700-battery-charger-4-socket-nickel-hydrogen) ## Best For - sunlytour enthusiasts ## Why This Product - Trusted sunlytour brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual USB Inputs Included:** Comes with both Micro USB and Type-C cables for seamless power source flexibility. - • **Smart Auto-Stop Charging:** Automatically halts charging when batteries reach full capacity to extend battery lifespan. - • **Intelligent Safety Protection:** Built-in PCB protection and reverse polarity safeguard your batteries and device from damage. - • **Universal Battery Compatibility:** Supports NiMH, NiCd, and a wide range of lithium-ion batteries including 21700, 18650, 20700, and more. - • **Charge 4 Batteries Simultaneously:** Maximize efficiency with 4 adjustable slots supporting batteries up to 75mm long. ## Overview The SUNLYTOUR 4-Socket Battery Charger is a compact, lightweight device designed for professional-grade charging of multiple battery types including 21700, 18650, and NiMH variants. Featuring 4 independent adjustable slots, intelligent PCB protection, and smart auto-stop technology, it ensures safe, efficient, and versatile charging. Dual USB inputs (Micro USB and Type-C) provide universal compatibility, making it an essential tool for managers and tech-savvy millennials who demand reliability and convenience in their power accessories. ## Description Note: Before charging, please confirm that the battery is normal Do not charge if the exterior or electrode plates are damaged Attention: For nickel-hydrogen batteries, it is recommended to turn off the power immediately once the battery is fully charged This charger can't charge CR123, CR123A batteries It cannot charge 1.5 V lithium-ion batteries either Do not attempt to charge This charger has a 75 mm slot and is compatible with batteries less than 75 mm 21750, 21700, 20700, 26700, 26650, 18650 Battery with PCB Protection Plate SUNLYTOUR Universal 4-Slot 21700 Battery Charger Compatibility: 1.2V MH/Ni CD: AA/AAA/AAA/C/SC/F6 3.6 V/3.7 V Li-ion/IMR/INR/ICR(≦75 mm): 3.6 V/3.7 V 10440/1450/14650/RCR 16340/1650/17500/17650/17670/18350/18490/18500/18650 20700 21700 22700 26700 21750 (≤75 mm) Parameter: Input power: DC 5V 2A Output: Lithium Ion: DC 5 V 2 A NiMH battery: 0.5 A Size:123mm*96mm*32mm Weight:137g The set includes 1 x SUNLYTOUR Universal 4 Slot 21700 Battery Charger 1 x Micro USB cable 1 x Type-C cable 1* User Manual Review: 充電が99%まではしか到達せず100%になりません。電池に問題があるとは思えないですがわかりません。 Review: quick delivery product as described by the supplier ## Features - ※1. 【Notice】Before charging, please confirm that the battery is normal Do not charge if the exterior or electrode plates are damaged This charger can not charge CR123, CR123A batteries Cannot charge 1.5 V lithium-ion batteries Do not attempt to charge - ※ 2. 【Convenient】This charger has a 3.0 inches (75 mm) slot and is compatible with batteries 3.0 inches (75 mm) or smaller For example, 21750, 21700, 20700, 26700, 26650, 18650 batteries come with a PCB protection board So you can charge your LED flashlight batteries and other appliances - ※ 3. [Compatibility] This smart USB battery charger is compatible with 1.2V nickel-hydrogen nickel-cadmium AAA, AA, SC, F, 6 lithium-ion, IMR, INR, ICR, 21750, 18650, 20700, 21700, 22700, 26700, 10440, 14500, 14650, 16340 (RCR 123), 16650, 17500, 17650, 17670, 18350, 18490, 18500 rechargeable batteries - ※ 4. 【Unique Design】This battery charger has a high-standard design with 4 independent slots that can be freely adjusted, allowing it to charge batteries of different lengths, which is very convenient and effective - ※ 5. 【Intelligent Protection】Features unique reverse connection protection, with an intelligent chip safeguarding your equipment When charging is full, it stops charging based on smart technology ## Technical Specifications | Specification | Value | |---------------|-------| | Color Name | black | | Batteries Included | No | | Batteries Required | No | | Brand | SUNLYTOUR | | Manufacturer | JUNENGJIA | | Item Model Number | D4 | | Product Dimensions | 12 x 16 x 5 cm; 137 g | | Item Weight | 137 Grams | ## Product Details - **Brand:** SUNLYTOUR - **Color:** black - **Product Dimensions:** 12D x 9W x 3H cm - **Item Weight:** 137 Grams - **Output Voltage:** 5 Volts (DC) ## Images ![4 Socket 21750 21700 Battery Charger, 4 Socket Nickel-Hydrogen AA 18650 Charger 21700 20700 22700 22650 2650 26700 16340 (RCR 123) 17670 with PCB Protection Sheet Battery - Image 1](https://m.media-amazon.com/images/I/61CgvWhZcML.jpg) ## Customer Reviews ### ⭐⭐⭐⭐ Review *by A***I on June 8, 2025* 充電が99%まではしか到達せず100%になりません。電池に問題があるとは思えないですがわかりません。 ### ⭐⭐⭐⭐⭐ Review *by M***E on January 16, 2025* quick delivery product as described by the supplier ### ⭐⭐⭐⭐⭐ Review *by B***R on April 13, 2025* Das Ladegerät tut was es soll - Akkus laden. Wie in anderen Rezesionen auch schon geschrieben, ist die Anzeige des Ladezustandes in % recht ungenau. Sehr positiv: die Stromversorgung kann über Micro-USB, USB-C oder Lightning erfolgen. Netzteil ist nicht dabei, macht aber nichts, da jeder genügend davon zu Hause hat. ## Frequently Bought Together - 4 Slots 21750 21700 Battery Charger,4 Slots Ni-MH AA 18650 Battery Charger 21700 Charger for 20700 22700 22650 26650 26700 16340 (RCR123) 17670 Battery with PCB Protection Board - DQGG 3.7 Volt 16340 Rechargeable Battery 2800mAh Battery 4 Pack Large Capacity Batteries for LED Flashlight, Headlamps, etc - BFHB 21700 Battery Case Set 5000 mAh for Flashlight - 2 Pack --- ## 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.pt/products/745061450-4-socket-21750-21700-battery-charger-4-socket-nickel-hydrogen](https://www.desertcart.pt/products/745061450-4-socket-21750-21700-battery-charger-4-socket-nickel-hydrogen) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-06-08*