---
product_id: 338765517
title: "5 Pcs 4.3V-27V Charging Discharge Module Adjustable Step Up Module+18650 Battery Holder with Red and black lines for 18650 Lithium Battery Fast Charging Boost Mobile Power Protection PCB Board"
brand: "youmile"
price: "RM111"
currency: MYR
in_stock: true
url: https://www.desertcart.com.my/products/338765517-5-pcs-4-3v-27v-charging-discharge-module-adjustable-step
store_origin: MY
region: Malaysia
---

# 5 Pcs 4.3V-27V Charging Discharge Module Adjustable Step Up Module+18650 Battery Holder with Red and black lines for 18650 Lithium Battery Fast Charging Boost Mobile Power Protection PCB Board

**Brand:** youmile
**Price:** RM111
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** 5 Pcs 4.3V-27V Charging Discharge Module Adjustable Step Up Module+18650 Battery Holder with Red and black lines for 18650 Lithium Battery Fast Charging Boost Mobile Power Protection PCB Board by youmile
- **How much does it cost?** RM111 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/338765517-5-pcs-4-3v-27v-charging-discharge-module-adjustable-step)

## Best For

- youmile enthusiasts

## Why This Product

- Trusted youmile brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

5 Pcs 4.3V-27V Charging Discharge Module Adjustable Step Up Module+18650 Battery Holder with Red and black lines for 18650 Lithium Battery Fast Charging Boost Mobile Power Protection PCB Board

## Features

- 【Product use】：This module is made for charging rechargeable lithium batteries and Boost module. This module greatly simplifies the process of adding single cell Lithium battery power to your projects.
- 【Various indices】：Input voltage: 4.5-8V; Charging voltage: 4.2V(Charge the 3.7V 18650 Lithium Battery); Charging current: up to 1A; Discharge current: the maximum 2A.
- 【Product construction】：This product can build a 9v or 12v rechargeable power supply, with a micro usb as a DC 5v input interface.
- 【Multimeter】：Can be used for multimeter, converted to lithium battery charging. VIN+ Port input 5V solar panels, BAT+ port can output 4.2V to charger 3.7V 18650 battery.
- 【Overcharge protection】：When the input current reaches the limit flow rate of a certain module, the module will automatically turn on the overcharge protection function to prevent damage caused by overcharge

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Youmile |
| Part number | JK-YM-031 |
| Item Weight | 65 g |
| Package Dimensions | 18.8 x 8.8 x 2.2 cm; 65 g |
| Item model number | JK-YM-031 |
| Batteries included? | No |
| Batteries Required? | No |

## Images

![5 Pcs 4.3V-27V Charging Discharge Module Adjustable Step Up Module+18650 Battery Holder with Red and black lines for 18650 Lithium Battery Fast Charging Boost Mobile Power Protection PCB Board - Image 1](https://m.media-amazon.com/images/I/71zfr6jBv2L.jpg)

## Frequently Bought Together

- Youmile 5 Pcs 4.3V-27V Charging Discharge Module Adjustable Step Up Module+18650 Battery Holder with Red and black lines for 18650 Lithium Battery Fast Charging Boost Mobile Power Protection PCB Board
- Youmile 5 pcs 18650 Lithium Li-ion Battery Charger Board 3.7V 4.2V to 5V/9V 1A DC-DC Step Up Boost Module Adjustable charge and discharge + 5 pcs 18650 battery box
- Fasizi 10PCS Multifunctional DIY Mini DC-DC Lithium Battery Boost Module Step Up Board Converter 3.7V to 12V Voltage Regulator Adjust 5V/8V/9V LED Indicator

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**Shop now:** [https://www.desertcart.com.my/products/338765517-5-pcs-4-3v-27v-charging-discharge-module-adjustable-step](https://www.desertcart.com.my/products/338765517-5-pcs-4-3v-27v-charging-discharge-module-adjustable-step)

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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-02-22*