---
product_id: 46066045
title: "3.7v 500mah Lipo Battery with X4 Battery Charger for UDI U818A U817A U817 U818A-1 RC Drone Quadcopter 4PCS with X4 Battery Charger (Not Compatible for UDI U818A FPV)"
brand: "engpow"
price: "VT8266"
currency: VUV
in_stock: true
reviews_count: 8
url: https://www.desertcart.vu/products/46066045-3-7v-500mah-lipo-battery-with-x4-battery-charger-udi
store_origin: VU
region: Vanuatu
---

# 4-port simultaneous fast charging 3.7V 500mAh high-drain power Easy pull & plug battery design 3.7v 500mah Lipo Battery with X4 Battery Charger for UDI U818A U817A U817 U818A-1 RC Drone Quadcopter 4PCS with X4 Battery Charger (Not Compatible for UDI U818A FPV)

**Brand:** engpow
**Price:** VT8266
**Availability:** ✅ In Stock

## Summary

> 🚀 Power Up Your Flight Game — Never Miss a Moment in the Sky!

## Quick Answers

- **What is this?** 3.7v 500mah Lipo Battery with X4 Battery Charger for UDI U818A U817A U817 U818A-1 RC Drone Quadcopter 4PCS with X4 Battery Charger (Not Compatible for UDI U818A FPV) by engpow
- **How much does it cost?** VT8266 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/46066045-3-7v-500mah-lipo-battery-with-x4-battery-charger-udi)

## Best For

- engpow enthusiasts

## Why This Product

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

## Key Features

- • **Safe & User-Friendly:** Smart LED charger indicators and easy pull battery design ensure hassle-free, safe charging and swapping.
- • **Compact & Lightweight:** Sleek 57x18x7.5mm size and just 16g weight keeps your drone agile and ready for takeoff.
- • **Extended Flight Power:** 500mAh capacity delivers longer, more reliable drone flights without compromise.
- • **Quad-Charge Efficiency:** Charge all 4 batteries at once with the included X4 multi-port charger—less downtime, more airborne action.
- • **Seamless Compatibility:** Perfectly engineered for UDI U818A series and select models—plug & play, no modifications needed.

## Overview

This 3.7V 500mAh lithium-polymer battery pack includes 4 high-drain rechargeable cells and a 4-port charger designed for UDI U818A, U817, and compatible quadcopters. Engineered for quick charging and easy battery swaps, it extends your drone’s flight time while maintaining lightweight agility. Ideal for drone enthusiasts seeking reliable backup power and efficient charging in one sleek package.

## Description

If you have any issue with our products,please contact us by email or ask the question on the product page.We will try our best to solve your problem! 3.7V 500mAh Lipo Batteries for UDI U818A U817A U817 U818A-1 RC Quad Copters This 3.7V 500mAh Lipo battery is a replacement battery. It will give more punch and robust performance due to its higher current output and power. Direct replacement battery for UDI U818A U817A U817 U818A-1 RC Drone Quadcopter, no modification is needed. Specification: Voltage: 3.7V Capacity: 500mAh Battery Type: Lithium Cells : 1 Weight:16g / 0. 56oz(not including wires and package) Size:57mm*18mm*7.5mm/ 2.24 x 0. 71 x 0. 3 inch Package included: 4pcs*3.7v 500mah lipo batteries 1*X4 charger 1*usb cable 4*adapter cables Reminder: First,plug in the battery Second,plug in the USB cable Compatible with these models: UDI U818A, U818A-1, UDI U817, U817A WLtoys Quadcopter V959 V969 V979 V989 V999 V929 V949 V212 V222 LED Status for charger : Red Lights on: currently charging Red Lights off: charging complete The instruction for charger: 1.Please inspect the batteries for any damage or swelling before charging 2.Plug all the white connector of batteries or the white connector of the converting wires into the port of charger completely 3.While the light is off ,it indicates that the batteries are fully charged.While the batteries are full,Please unplug the adapter at once Kindly Remind Please feel free to contact us if you have any questions, wish you have a nice day!

Review: Like the Multi-Charger - Great back up batteries for my son’s drone. The batteries don’t last too long (none really do) but having 4 and the charger that can charge multiple batteries at once makes it possible to get some decent flying time.
Review: Great deal for the price! - I have to admit I wasn't expecting much from this purchase but things have gone very well. I am a high school teacher and I keep a few drones around to let my kids learn with. These batteries and the charger work perfectly. The charger charges all 4 batteries at once and gets it done pretty quickly. The flight times with the batteries are the same as you will get with any other battery.

## Features

- Best Choice as Chirstmas Gifts: Exquisite and Thoughtful package,High Cost-effective Battery.Enough Power for your flight. It fits UDI U818A perfectly. (can also be used in jy018 eachine e52 No plastic shell)Please store and charge the batteries in a safe environment and keep them away from children under 12 years of age.
- Capacity:3. 7V 500mAh rc drone battery, guarantee more flight time, high drain lithium-polymer rechargeable battery. The battery is made of 100% lithium cobaltate , and it has a longer charging life.
- Size:57mm*18mm*7.5mm/ 2.24 x 0. 71 x 0. 3 inch,Weight:16g / 0. 56oz. Easy pull feature - easily take the battery out of the drone without pulling the cord,easy to insert and pull out battery!
- Package including: 4pcs batteries, 1set 4-port charger, 4pcs adapter cables, can charge 4 batteries at one time!The charger has a very good connection with each batteries.
- Customer Service: We provide friendly after-sale service and no risk refund for our customers. If you have any issue,please contact us and we will try out best to solve your issue

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0746JGS4T |
| Batteries | 4 Lithium Polymer batteries required. (included) |
| Customer Reviews | 4.1 4.1 out of 5 stars (664) |
| Date First Available | July 24, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.06 ounces |
| Item model number | TS37500 |
| Manufacturer | Three Stone |
| Product Dimensions | 2.3 x 0.7 x 0.3 inches |

## Product Details

- **Brand:** ENGPOW
- **Item Weight:** 0.03 Kilograms
- **Manufacturer:** Three Stone
- **Output Voltage:** 3.7 Volts
- **UPC:** 781903654438

## Images

![3.7v 500mah Lipo Battery with X4 Battery Charger for UDI U818A U817A U817 U818A-1 RC Drone Quadcopter 4PCS with X4 Battery Charger (Not Compatible for UDI U818A FPV) - Image 1](https://m.media-amazon.com/images/I/616p34zypXL.jpg)
![3.7v 500mah Lipo Battery with X4 Battery Charger for UDI U818A U817A U817 U818A-1 RC Drone Quadcopter 4PCS with X4 Battery Charger (Not Compatible for UDI U818A FPV) - Image 2](https://m.media-amazon.com/images/I/617HRla6ZlL.jpg)
![3.7v 500mah Lipo Battery with X4 Battery Charger for UDI U818A U817A U817 U818A-1 RC Drone Quadcopter 4PCS with X4 Battery Charger (Not Compatible for UDI U818A FPV) - Image 3](https://m.media-amazon.com/images/I/61GrsSPNkTL.jpg)
![3.7v 500mah Lipo Battery with X4 Battery Charger for UDI U818A U817A U817 U818A-1 RC Drone Quadcopter 4PCS with X4 Battery Charger (Not Compatible for UDI U818A FPV) - Image 4](https://m.media-amazon.com/images/I/61JPrUem4SL.jpg)
![3.7v 500mah Lipo Battery with X4 Battery Charger for UDI U818A U817A U817 U818A-1 RC Drone Quadcopter 4PCS with X4 Battery Charger (Not Compatible for UDI U818A FPV) - Image 5](https://m.media-amazon.com/images/I/61KANIrgGFL.jpg)

## Questions & Answers

**Q: It is compatible with the x dronehd model: g150001?**
A: Returned

**Q: Can you use this on the eachine e58?**
A: no,thanks

**Q: Anyone know the charging time for these batteries?**
A: About 45 minutes. After I use them I charge for 20 minutes or so trying to achieve a 

storage charge. When I want to fly I put them back on the charger so another 20 to 30 

minutes until full so just an estimate.

**Q: Hi, will these batteries work in a heli-max 230si? thanks**
A: No.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Like the Multi-Charger
*by M***J on January 12, 2021*

Great back up batteries for my son’s drone. The batteries don’t last too long (none really do) but having 4 and the charger that can charge multiple batteries at once makes it possible to get some decent flying time.

### ⭐⭐⭐⭐⭐ Great deal for the price!
*by A***N on February 19, 2020*

I have to admit I wasn't expecting much from this purchase but things have gone very well. I am a high school teacher and I keep a few drones around to let my kids learn with. These batteries and the charger work perfectly. The charger charges all 4 batteries at once and gets it done pretty quickly. The flight times with the batteries are the same as you will get with any other battery.

### ⭐⭐⭐⭐ Good replacement charger & batteries
*by A***R on November 19, 2018*

I bought the charger and battereis as a replacement for the UDI RC 818a drone. This charger works better than the original - it charges 4 batteries at once, and the red status LEDs are less confusing than the original. It needs little adapter cables, which lets me think it's used more universally for this kind of batteries. The batteries - well, they are OK, but it would be better if they were a bit thicker. Without additional measures they are a bit too thin and can easily fall out of the drone's battery holder in flight. 5 stars would have been with the batteries a bit thicker.

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-03-10*