--- product_id: 66726321 title: "12Pcs 5V Boost Module for DIY Charger,w/LED Display&USB&Micro Port" brand: "onyehn" price: "$19.37" currency: USD in_stock: true category: "Onyehn" url: https://www.desertcart.us/products/66726321-12pcs-5v-boost-module-for-diy-charger-w-led-display store_origin: US region: United States of America --- # 5V input & 5V 1.2A output power Supports 3.7-5.5V lithium batteries in parallel Built-in overcharge, over-discharge & overload protection 12Pcs 5V Boost Module for DIY Charger,w/LED Display&USB&Micro Port **Brand:** onyehn **Price:** $19.37 **Availability:** ✅ In Stock ## Summary > 🔌 Power your DIY projects with smart, safe, and scalable charging! ## Quick Answers - **What is this?** 12Pcs 5V Boost Module for DIY Charger,w/LED Display&USB&Micro Port by onyehn - **How much does it cost?** $19.37 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/66726321-12pcs-5v-boost-module-for-diy-charger-w-led-display) ## Best For - onyehn enthusiasts ## Why This Product - Trusted onyehn brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Advanced Safety Shield:** Integrated MOSFET and protection circuits guard against overcharge, over-discharge, and overload. - • **Smart Parallel Connection:** Connect multiple lithium batteries in parallel (3.7-5.5V) for scalable power solutions. - • **Power-Packed 5V Boost Module:** Reliable 5V input with 1.2A output to keep your devices charged efficiently. - • **Dual Version Charge Indicator:** Old version features intuitive red LED charging status; new version offers sleek no-light design. - • **Universal Battery Compatibility:** Works seamlessly with Polymer, 18650 Lithium, cell phone, tablet & MP3 batteries. ## Overview This 12-piece set of 5V boost modules features built-in MOSFET power management and supports lithium batteries from 3.7 to 5.5V connected in parallel. With a 5V 1.2A output and micro USB input, it’s compatible with Polymer, 18650, and other lithium batteries. The modules come in two versions—one with LED charge indicators and one without—and include comprehensive protection against overcharging, over-discharging, and overload, making them ideal for DIY battery charging and power management projects. ## Description The use of welding Note B + positive and B-negative can not be reversed 18650 battery Charging board size : 22*17*11mm Input : 5V 1A (charging red light) Output : 5V 1.2A (please do not take longer than 1200mA current device) Lithium voltage : 3V- 4.3V Charging Interface : Micro USB Available for various batteries like Polymer ,18650 Lithium ,Cell Phone ,Tablet and MP3 Battery The step up charging board can be connected to a lithium battery and connected in multiple sections of lithium batteries, as long as the voltage is 3.7-5.5V in parallel(only be connected in parallel, not in series) Charging instruction : Two versions are shipped randomly.Old Version charge status indication. Red light flashes when charging; Long red light when full;New Version has no lights. it has protection functions, protect from over-charger / over-discharger/ over-load ( support charger and discharger at the same time ) The image is for illustration Package Included: 12 X 5V Lithium Battery Charge Protection Board ## Features - 🌟Built-in charge and discharge power MOS;The existing power management chip on the market all are HOTCHIP HT4928S which the parameters is same as134N3P - 🌟Two versions are shipped randomly.Old Version charge status indication. Red light flashes when charging; Long red light when full;New Version has no lights. - 🌟The step up charging board can be connected to a lithium battery and connected in multiple sections of lithium batteries, as long as the voltage is 3.7-5.5V in parallel(only be connected in parallel, not in series) - 🌟Available for various batteries like Polymer ,18650 Lithium ,Cell Phone ,Tablet and MP3 Battery - 🌟it has protection functions, protect from over-charger / over-discharger/ over-load ( support charger and discharger at the same time ) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07D3SQYKJ | | Best Sellers Rank | #753,680 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3,553 in Power Converters | | Brand | Onyehn | | Color | Red | | Customer Reviews | 4.4 4.4 out of 5 stars (211) | | Input Voltage | 5 Volts | | Item Dimensions | 3.94 x 3.15 x 0.39 inches | | Item Weight | 0.02 Kilograms | | Manufacturer | Onyehn | | Mfr Part Number | 225 | | Model Number | 5824093038 | | Number of Outlets | 1 | | Output Voltage | 5 Volts | | Plug Type | Micro USB | ## Product Details - **Brand:** Onyehn - **Color:** Red - **Input Voltage:** 5 Volts - **Item Weight:** 0.02 Kilograms - **Item dimensions L x W x H:** 3.94 x 3.15 x 0.39 inches ## Images ![12Pcs 5V Boost Module for DIY Charger,w/LED Display&USB&Micro Port - Image 1](https://m.media-amazon.com/images/I/81eujFw1dbL.jpg) ## Questions & Answers **Q: Just to confirm this is both a lipo charger and 5v boost converter, correct? when you remove the usb power, the battery will be boosted to output 5v?** A: Yes, this device is both a lipo charger and 5v boost converter. A few things I determined about its operation are: 1. When disconnecting the (micro) USB power the 5 Volt output power (at the Type A USB port )will drop to zero volts for about 200 to 300 msec and then switch to the boosted 5 volt output. 2. There also has to be a minimum output load for the output to be boosted. It was boosted when I had a 1 Kohm load, but it was not boosted when I had just had the meter (~10 Megohm) on the output. Then I just got the battery voltage. 3. The boosted output also seemed to have problems when supplying an output current near 1 amp. I believe that is is only rated for 1 ampere output current. **Q: My board charges my phone for 10 seconds, then get really hot and turns off and stops charging. Battery: 3.7v 16340 li-ion. Short circuiting? Help?** A: If your phone is a fairly new model my best guess is that board cannot supply enough current. The board I tested would only supply about 0.7 Amps. **Q: Why does the output only read 3.9V? I have 4V input.** A: When you say you have a 3.9V input, I'm assuming you mean you have a battery connected. If you have a charged lithium ion battery connected with the plus terminal to B+ and the minus terminal connected to B-, you should see 5 volts output on the large usb connector. Some of these modules (not sure about this one) require a minimum load to be connected to the large usb connector before the full 5 volts is output. Try plugging in a phone and then check the voltage. It's also possible that you've got a bad module. In that case, try another one. **Q: can i connect a solar cell directly to this to continuously power an esp01 charging in day and running on on battery at night?** A: You'll need a Diode to block reverse current to the Solar panel. Would not recommend it though as there will most likely be too much losses in the conversation and solar panel most likely will not put out enough current. But in theory it would work. ## Frequently Bought Together - Onyehn 12Pcs 5V Boost Step Up Power Supply Module Lithium Battery Charge Protection Board for DIY Charger,with LED Display,USB and Micro Port - MakerFocus 3pcs NRF24L01+PA+LNA Wireless Transceiver RF Transceiver Module 2.4G 1100m with Antenna and 3pcs NRF24L01+ Breakout Adapter with 3.3V Regulator on-Board for Ar duino --- ## 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.us/products/66726321-12pcs-5v-boost-module-for-diy-charger-w-led-display](https://www.desertcart.us/products/66726321-12pcs-5v-boost-module-for-diy-charger-w-led-display) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-30*