--- product_id: 460599137 title: "2A Battery Charger Module 4.2V 8.4V 12.6V 18650 Lithium Li-ion Battery Charger Circuit 1S 2S 3S Lithium ion Battery Step Down Charging PCB DC-DC Converter DIY CC CV Output to LED Driver (Default 2S)" brand: "qinizx" price: "R$5" currency: BRL in_stock: false url: https://www.desertcart.com.br/products/460599137-2a-battery-charger-module-4-2v-8-4v-12-6v store_origin: BR region: Brazil --- # 8.4V default output Compact 1.02x0.70 inch 2A charging current 2A Battery Charger Module 4.2V 8.4V 12.6V 18650 Lithium Li-ion Battery Charger Circuit 1S 2S 3S Lithium ion Battery Step Down Charging PCB DC-DC Converter DIY CC CV Output to LED Driver (Default 2S) **Brand:** qinizx **Price:** R$5 **Availability:** ❌ Out of Stock ## Summary > Charge Ahead with Confidence! ⚑ ## Quick Answers - **What is this?** 2A Battery Charger Module 4.2V 8.4V 12.6V 18650 Lithium Li-ion Battery Charger Circuit 1S 2S 3S Lithium ion Battery Step Down Charging PCB DC-DC Converter DIY CC CV Output to LED Driver (Default 2S) by qinizx - **How much does it cost?** R$5 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/460599137-2a-battery-charger-module-4-2v-8-4v-12-6v) ## Best For - qinizx enthusiasts ## Why This Product - Trusted qinizx brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **πŸ’‘ LED Indicator System:** Integrated LED indicators for real-time charging status. - β€’ **βš™οΈ Customizable Output:** Easily modifiable output cutoff voltages of 4.2V, 8.4V, and 12.6V. - β€’ **πŸ”Œ Versatile Input Range:** Compatible with 4.5V-22V DC for 1S, 2S, and 3S configurations. - β€’ **⏳ Efficient Charging Time:** Normal charging time limit of approximately 12 hours. - β€’ **πŸ›‘οΈ Smart Protection Features:** Automatic pre-charge and over-discharge protection for battery longevity. ## Overview The 2A Battery Charger Module is a versatile and compact charging solution for 1S, 2S, and 3S lithium-ion batteries. With a default output of 8.4V and customizable settings, it ensures efficient charging while providing real-time LED indicators and smart protection features to safeguard your batteries. ## Description Features: Compatible with 1S, 2S, 3S synchronous buck charging board Input using 4.7 + 22UF ceramic capacitors Output using 22UF + 22UF ceramic capacitor Comes with MOS anti-reflux Board comes with a red/blue double color Common anode LED indicator DIY PCB can drive LED with constant current and constant voltage output Board size: 26x18x4.3mm/1.02x0.70x0.16inch Input adaptable voltage range: 1S- 4.5-22V input 2S- 8.8-22V input (Default set output is 8.4V) 3S- 13-22V input Output charge cutoff voltage: 4.2V 8.4V 12.6V (Modifiable, Default 8.4V) Β± 1% Accuracy. Output charge current: Default 2A, it can run stably under low dropout voltage. If the dropout voltage is large (greater than 5V), it is necessary to increase heat dissipation or reduce current appropriately. Output a total of 2pcs 25 milliohms resistance, remove the 1pc for the 1A charge. If the battery initial voltage is lower than 2.8V, the chip automatically determine the battery over discharge to start a small current pre-charge, pre-charge current of 10% More than 1.3 hours after the battery failed to exceed 2.8V that the battery is damaged chip automatically protected. Output charging time limit: the normal constant current charging time limit of about 12 hours, the battery undervoltage small current pre-limit time of 1.4 hours (The time when the initial battery voltage is lower than 2.8V to 2.8V is pre-charged time) Red/Blue common anode LED logic: Input power No battery: red light flashes, blue light is on Input No Power Yes Batteries: Blue light is weak Charging: red light is always on Battery fully charged: blue light on Battery error board protection: red and blue alternately flash Package Included: 1x LED 1x Charging Module ## Features - 【NOTE】: The charging circuit is not a regulated power supply. If the output voltage is tested with no load, it is unstable because the voltage jump is the charging logic and has nothing to do with the product quality. eg. Default cut-off output voltage is 8.4V DC, and the no-load test output will be between 8.1V~8.5V, which does not affect the battery charging function. - Default set: Delivery Default Output Charge Cutoff Voltage is 8.4V(2S) (Input voltage need 8.8-22V, Modifiable) , charging current 2A (Modifiable). The module is designed to charge a single, two or three cell strings Li-Ion battery (4.2V, 8.4V or 12.6V) using 4.5V-22V DC. For the specific setting method, please refer to the fourth main picture. Default pcb come with a LED indicator. DIY PCB can drive LED with constant current and constant voltage output. - Input adaptable voltage range: 1S- 4.5-22V input; 2S- 8.8-22V input(Delivery default set); 3S- 13-22V input. Output Charge Cutoff Voltage: 4.2V 8.4V 12.6V (Modifiable, Default 8.4V) Β± 1% Accuracy. Board size: 1.02x0.70x0.16inch. Output charging time limit: the normal constant current charging time limit of about 12 hours, the battery undervoltage small current pre-limit time of 1.4 hours (The time when the initial battery voltage is lower than 2.8V to 2.8V is pre-charged time) - Output charge current: Default 2A, it can run stably under low dropout voltage. If the dropout voltage is large (> 5V), it is necessary to increase heat dissipation or reduce current appropriately. If the battery initial voltage is lower than 2.8V, the chip automatically determine the battery over discharge to start a small current pre-charge, pre-charge current of 10% More than 1.3 hours after the battery failed to exceed 2.8V that the battery is damaged chip automatically protected. - Red/blue common anode LED logic: Input power No battery: red light flashes, blue light is on; Input No Power Yes Batteries: Blue light is weak; Charging: red light is always on; Battery fully charged: blue light on; Battery error board protection: red and blue alternately flash. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B2CVRWMP | | Brand | QINIZX | | Color | Green | | Input Voltage | 240 Volts | | Item Type Name | Charging PCB | | Manufacturer | QINIZX | | Model Number | PCB-CHG1S-3S-2A | | Output Voltage | 8.4 Volts | | UPC | 743645787355 | ## Product Details - **Brand:** QINIZX - **Colour:** Green - **Input voltage:** 240 Volts - **Output voltage:** 8.4 Volts - **UPC:** 743645787355 ## Images ![2A Battery Charger Module 4.2V 8.4V 12.6V 18650 Lithium Li-ion Battery Charger Circuit 1S 2S 3S Lithium ion Battery Step Down Charging PCB DC-DC Converter DIY CC CV Output to LED Driver (Default 2S) - Image 1](https://m.media-amazon.com/images/I/61Ocs2kfI1L.jpg) ![2A Battery Charger Module 4.2V 8.4V 12.6V 18650 Lithium Li-ion Battery Charger Circuit 1S 2S 3S Lithium ion Battery Step Down Charging PCB DC-DC Converter DIY CC CV Output to LED Driver (Default 2S) - Image 2](https://m.media-amazon.com/images/I/51UXR1ecJEL.jpg) ![2A Battery Charger Module 4.2V 8.4V 12.6V 18650 Lithium Li-ion Battery Charger Circuit 1S 2S 3S Lithium ion Battery Step Down Charging PCB DC-DC Converter DIY CC CV Output to LED Driver (Default 2S) - Image 3](https://m.media-amazon.com/images/I/51DEGD4r5bL.jpg) ![2A Battery Charger Module 4.2V 8.4V 12.6V 18650 Lithium Li-ion Battery Charger Circuit 1S 2S 3S Lithium ion Battery Step Down Charging PCB DC-DC Converter DIY CC CV Output to LED Driver (Default 2S) - Image 4](https://m.media-amazon.com/images/I/718p+fbEWJL.jpg) ![2A Battery Charger Module 4.2V 8.4V 12.6V 18650 Lithium Li-ion Battery Charger Circuit 1S 2S 3S Lithium ion Battery Step Down Charging PCB DC-DC Converter DIY CC CV Output to LED Driver (Default 2S) - Image 5](https://m.media-amazon.com/images/I/51ERPbNKP8L.jpg) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.br/products/460599137-2a-battery-charger-module-4-2v-8-4v-12-6v](https://www.desertcart.com.br/products/460599137-2a-battery-charger-module-4-2v-8-4v-12-6v) --- *Product available on Desertcart Brazil* *Store origin: BR* *Last updated: 2026-04-26*