---
product_id: 344352712
title: "RUNSY Battery Case for Samsung Galaxy S21 Ultra 5G, 5000mAh Rechargeable Extended Battery Charging Charger Case, Add 100% Extra Juice, Not Compatible with S21 or S21+ (6.8 inch) Black"
brand: "runsy"
price: "$0.42"
currency: USD
in_stock: false
reviews_count: 3
url: https://www.desertcart.us/products/344352712-runsy-battery-case-for-samsung-galaxy-s21-ultra-5g-5000mah
store_origin: US
region: United States of America
---

# Simultaneous Charging 5000mAh Power 360° Protection RUNSY Battery Case for Samsung Galaxy S21 Ultra 5G, 5000mAh Rechargeable Extended Battery Charging Charger Case, Add 100% Extra Juice, Not Compatible with S21 or S21+ (6.8 inch) Black

**Brand:** runsy
**Price:** $0.42
**Availability:** ❌ Out of Stock

## Summary

> 🔌 Stay Charged, Stay Connected!

## Quick Answers

- **What is this?** RUNSY Battery Case for Samsung Galaxy S21 Ultra 5G, 5000mAh Rechargeable Extended Battery Charging Charger Case, Add 100% Extra Juice, Not Compatible with S21 or S21+ (6.8 inch) Black by runsy
- **How much does it cost?** $0.42 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/344352712-runsy-battery-case-for-samsung-galaxy-s21-ultra-5g-5000mah)

## Best For

- runsy enthusiasts

## Why This Product

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

## Key Features

- • **Travel Ready:** Perfect for on-the-go professionals.
- • **Durable Design:** High-quality materials for everyday protection.
- • **Smart Charging:** Integrated power switch for ultimate control.
- • **Power Up Your Day:** Double your battery life with a sleek design!
- • **LED Power Indicator:** Stay informed with a 4-light status display.

## Overview

The RUNSY Battery Case for Samsung Galaxy S21 Ultra 5G features a powerful 5000mAh rechargeable battery, providing 100% extra juice for your device. Designed for convenience, it allows simultaneous charging and protection, ensuring your phone stays powered during long journeys. With a slim profile and precise cut-outs, it’s perfect for professionals who need reliable performance without sacrificing style.

## Description

Full description not available

## Features

- √ Charging and protecting, 2 in 1 function. Built-in short-circuit and overcharge protection. Plugged-in: Charge the phone and battery case simultaneously while plugged in. The charging will be stopped after fully charged. Use the original charger and cable that come with the phone to charge the battery case as generic or non-original chargers and cables usually cause the battery case to malfunction.
- √ Integrated power switch allows you to turn on / off the battery case quickly. 4-light LED indicator shows the power status of the battery case. And each light represents 25% of the power. Installation: The phone is charged once it’s installed into the battery case. The charging will be stopped after fully charged. The battery case won’t automatically charge the phone when the phone battery runs low. Press the power button once to start charging. Press the power button twice to stop charging.
- ✔️ Slim design with accurate cut-outs. It’s perfect for traveling and outdoor activities. You can also easily access to the buttons and ports of the phone without removing the battery case. Type-C Wire Headphones, Android Auto, Quick Charge or Wireless Charging NOT supported. You need to remove the battery case if you want to sync the phone to a computer.
- √ Made of high quality material, unique and comfortable tactile impression. 360o Full Protection. Protect the phone from bumps, scratches and dust. Don’t protect the screen. It’s recommended to install a screen protector.
- √ Built-in 5000mAh lithium-ion battery, high efficiency and high conversion rate. Add 100% extra juice for the phone. Ideal for long distance journey and business trip. This battery case is only compatible with Galaxy S21 Ultra. It's NOT compatible with Galaxy S21 or Galaxy S21+.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material Type | Plastic |
| Item Dimensions | 6.65 x 3.07 x 0.79 inches |
| Pattern | Solid |
| Theme | Battery case |
| Form Factor | Basic Case |
| Color | Black |
| Additional Features | Kickstand |
| Is Autographed | No |
| Screen Size | 6.8 Inches |
| Compatible Devices | Samsung Galaxy S21 Ultra 5G |
| Water Resistance Level | Not Water Resistant |
| Compatible Phone Models | Samsung Galaxy S21 Ultra 5G |

## Product Details

- **Brand:** RUNSY
- **Compatible Phone Models:** Samsung Galaxy S21 Ultra 5G
- **Color:** Black
- **Compatible Devices:** Samsung Galaxy S21 Ultra 5G
- **Material:** Plastic

## Images

![RUNSY Battery Case for Samsung Galaxy S21 Ultra 5G, 5000mAh Rechargeable Extended Battery Charging Charger Case, Add 100% Extra Juice, Not Compatible with S21 or S21+ (6.8 inch) Black - Image 1](https://m.media-amazon.com/images/I/71bBRBpmMbL.jpg)
![RUNSY Battery Case for Samsung Galaxy S21 Ultra 5G, 5000mAh Rechargeable Extended Battery Charging Charger Case, Add 100% Extra Juice, Not Compatible with S21 or S21+ (6.8 inch) Black - Image 2](https://m.media-amazon.com/images/I/61ar3q3OOkL.jpg)
![RUNSY Battery Case for Samsung Galaxy S21 Ultra 5G, 5000mAh Rechargeable Extended Battery Charging Charger Case, Add 100% Extra Juice, Not Compatible with S21 or S21+ (6.8 inch) Black - Image 3](https://m.media-amazon.com/images/I/6141gzsg0BL.jpg)
![RUNSY Battery Case for Samsung Galaxy S21 Ultra 5G, 5000mAh Rechargeable Extended Battery Charging Charger Case, Add 100% Extra Juice, Not Compatible with S21 or S21+ (6.8 inch) Black - Image 4](https://m.media-amazon.com/images/I/51GDRLcckBL.jpg)
![RUNSY Battery Case for Samsung Galaxy S21 Ultra 5G, 5000mAh Rechargeable Extended Battery Charging Charger Case, Add 100% Extra Juice, Not Compatible with S21 or S21+ (6.8 inch) Black - Image 5](https://m.media-amazon.com/images/I/51oPa0HkBYL.jpg)

## Questions & Answers

**Q: How long does it take to charge case it self**
A: 8 hours.

**Q: What is the flap on the back of charging case for?**
A: It is a stand to prop up your phone at an angle.

**Q: Are the lights supposed to be on if im charging just the case?**
A: Yes.

**Q: Do I leave the battery case powered on all the time while its connected to the phone?**
A: That's usually what I do.  The case will run down first then the phone will.   I dont charge either until the phone gets low

## Customer Reviews

### ⭐ flimsy
*by P***N on May 17, 2022*

Poorly made piece of junk

### ⭐⭐ The case affects the touch screen functionality when charging the Phone
*by D***D on January 8, 2024*

I just recieved the case yesterday as a gift and it worked great out of the box, I used it then charged it over night but when I went to use it the next day, my phone would not function properly only when the case was on. It is intermittently allowing touch screen inputs but as soon as you turn the charging function off, the phone works just fine. If someone has a fix for this I would be glad to hear it but for now I have to give the case 2/5 stars because it breaks the phone when in opperation.

### ⭐⭐⭐⭐⭐ It definitely came in cluth!
*by E***N on August 14, 2022*

Went out on a boating trip with the wife and her phone was dead. She has an s21 and I have the s21ultra. Her phone fit into the case and was able to charge it so it didn't die. And we got to continue on with our trip. Glad I had this! I wouldn't reccomend this for everyday use, as it's a battery case and makes the phone bulky. But if you're going somewhere where you need a longer charge, I definitely reccomened it. Even a hiking trip. I plan on brining it there next.

## Frequently Bought Together

- RUNSY Battery Case for Samsung Galaxy S21 Ultra 5G, 5000mAh Rechargeable Extended Battery Charging Charger Case, Add 100% Extra Juice, Not Compatible with S21 or S21+ (6.8 inch) Black
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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-06-09*