--- product_id: 195701343 title: "8.4V Charger 2A Headlight Adapter 7.2V 7.4V for Vivaspa Massager 2S x 8 Lithium Battery Pack Wall Charge X2 X3 Flashlight lamp" brand: "e-shark" price: "€ 34.36" currency: EUR in_stock: true category: "E Shark" url: https://www.desertcart.be/products/195701343-8-4v-charger-2a-headlight-adapter-7-2v-7-4v store_origin: BE region: Belgium --- # 2A fast charging current 8.4V optimized for 2-cell Li-ion packs Multi-layer intelligent safety protection 8.4V Charger 2A Headlight Adapter 7.2V 7.4V for Vivaspa Massager 2S x 8 Lithium Battery Pack Wall Charge X2 X3 Flashlight lamp **Brand:** e-shark **Price:** € 34.36 **Availability:** ✅ In Stock ## Summary > 🔌 Power your ride with precision and safety — never miss a moment in the fast lane! ## Quick Answers - **What is this?** 8.4V Charger 2A Headlight Adapter 7.2V 7.4V for Vivaspa Massager 2S x 8 Lithium Battery Pack Wall Charge X2 X3 Flashlight lamp by e-shark - **How much does it cost?** € 34.36 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/195701343-8-4v-charger-2a-headlight-adapter-7-2v-7-4v) ## Best For - e-shark enthusiasts ## Why This Product - Trusted e-shark brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Safety Tech:** Built-in IC chip guards against short circuits, overloads, and over-current risks. - • **Precision 8.4V Output:** Tailored voltage ensures optimal battery health and longevity. - • **Rapid 2A Charging Power:** Get your bike light powered up swiftly without the wait. - • **Universal Compatibility:** Seamlessly charges Vivaspa, Blitzu, Gerber, Victagen, and other 7.2-8.4V lithium battery packs. - • **LED Charge Status Indicator:** Clear red/green LED signals keep you informed on charging progress at a glance. ## Overview This 8.4V 2A Li-ion battery charger from E-Shark delivers efficient, intelligent charging for 2-cell lithium battery packs used in bike headlights and massagers. Featuring advanced IC chip protection and LED indicators, it ensures safe, fast, and reliable power replenishment compatible with popular brands like Vivaspa, Blitzu, and Gerber. ## Description Product Name: Li-ion Battery Charger. Input voltage: AC110-240V. Output voltage: DC8.4V 2A. Voltage Frequency: 50 / 60Hz. Output ripple: 100MVP-P. Efficiency: 85%. Output line length: 1M. Weight:120g/2.4oz. Output interface: 5.5mm * 2.1mm Plug polarity: inside positive (+) outside negative (-). Scope: 2series 7.2V 8.4V lithium battery pack. Package: 1 x 8.4V battery charger ## Features - 8.4V Li-ion Charger for most bike light T6 Bulb LED HeadLight. Charger keep dry and ventilated environment, avoid hot and humid. - IC chip SMD motherboard solutions, comprehensive intelligent protection, stoped, with short circuit, overload, over-current protection. - constant current charging, LED red light indicates charging to the rated voltage, constant voltage charging current gradually decreases when the charge current reaches the current turn lights, LED lights turn for the green light, then the battery is 90% -95%, with low current continues to charge the battery until it is full. - Charger work on Blitzu Headlight Gerber Headlamp and Bicycle light Charger, Interface Size: DC5.5*2.5mm - Charger for 2-cell Lithium-ion Systems Victagen light Bright Eyes and other rechargeable headlights ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07Z2FRTTF | | Amperage | 2 A | | Best Sellers Rank | #528,630 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #607 in Bike Lighting Parts & Accessories | | Brand | E-Shark | | Built-In Media | 1 x 8.4V battery charger | | Compatible Devices | Adapter, Led lights, Torch | | Compatible Phone Models | Victagen bike light | | Compatible Power Plug Type | Type A - 2 pin (North American) | | Connectivity Technology | DC Barrel | | Connector Type | Barrel connector | | Current | AC/DC | | Current Rating | 2 A | | Customer Reviews | 4.1 4.1 out of 5 stars (58) | | Enclosure Material | Acrylonitrile Butadiene Styrene | | Input Voltage | 8.4 volts_of_direct_current | | Item Weight | 2.4 ounces | | Manufacturer | E-Shark | | Number of Items | 1 | | Output Current | 2 A | | Output Voltage | 8.4 volts_of_direct_current | | Power Plug | Type A - 2 pin (North American) | | Power Source | AC Powered | | Special Features | Intelligent Charging, Safety Protection | | UPC | 886269040656 | | Unit Count | 1 Count | | Voltage | 7.4 volts | | Wattage | 16.8 watts | ## Product Details - **Amperage:** 2 A - **Brand:** E-Shark - **Compatible Devices:** Adapter, Led lights, Torch - **Compatible Phone Models:** Victagen bike light - **Connector Type:** Barrel connector - **Included Components:** 1 x 8.4V battery charger - **Input Voltage:** 8.4 volts_of_direct_current - **Number of Items:** 1 - **Special Feature:** Intelligent Charging, Safety Protection - **Wattage:** 16.8 watts ## Images ![8.4V Charger 2A Headlight Adapter 7.2V 7.4V for Vivaspa Massager 2S x 8 Lithium Battery Pack Wall Charge X2 X3 Flashlight lamp - Image 1](https://m.media-amazon.com/images/I/71FWRa433zL.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.be/products/195701343-8-4v-charger-2a-headlight-adapter-7-2v-7-4v](https://www.desertcart.be/products/195701343-8-4v-charger-2a-headlight-adapter-7-2v-7-4v) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-09-09*