Golisi S4 is the next generation of O series chargers. Besides all function of O4, the S4 comes with an upgraded micro-processor which enables the large LCD screen to show clearly charging status. More faster and safer. Features: 1. 4 battery slots with 2A fast charging 2. Upgraded micro-processor with large LCD screen 3. User friendly Large LCD display showing clearly charging status 4. High compatibility with most of cylinder shape rechargeable batteries 5. 0.5A/ 1.0A/ 2.0A output options Size:145 x 98 x 35mm Input: AC 110-240V 50/60HZ; DC 12V/1A Output: 4.2V +/-1%/ 3.7V +/-1%/ 1.48V +/-1%(Li-ion battery: 2Ax1 1Ax2 0.65AX3 0.5AX4) LCD Display: displays channel/ battery type/ battery voltage/ charging current/ capacity rate Protections: Short Circuit Protection; Over-Current Protection; Reverse Connection Protection Loading Spring: high quality spring Plug: AU, EU, UK, US Case Materials: ABS+PC+ fire-retardant materials Unit:1Set Shipping Weight:522g Package:Simple Shipping method:Please check here for details. Each set contains: 1pc Golisi S4 charger 1pc Power Cord 1pc Pouch 1pc Manual Warranty: Please refer to Warranty Policy for details. How to save money? You can use shopping points. Please check instruction here. Please check discount codes for orders over 50 USD and save money. If you want bigger discounts, please check our wholesale instruction. Your satisfaction is our top priority. If for any reason you are in need of help or support, please click Help Desk on the top right corner and submit a ticket.We will reply to you asap.