---
product_id: 649138869
title: "JOYO Built-in 4400mAh Battery, Power Supply for Guitar Effects Pedal, 8 Outputs, 9V, 12V, 18V (100mA, 500mA), Jacks and 5V/1A USB Port (JP-05)"
brand: "joyo"
price: "¥26238"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/649138869-joyo-built-in-4400mah-battery-power-supply-for-guitar-effects
store_origin: JP
region: Japan
---

# 8 versatile DC outputs 4400mAh built-in battery 5V/1A USB charging port JOYO Built-in 4400mAh Battery, Power Supply for Guitar Effects Pedal, 8 Outputs, 9V, 12V, 18V (100mA, 500mA), Jacks and 5V/1A USB Port (JP-05)

**Brand:** joyo
**Price:** ¥26238
**Availability:** ✅ In Stock

## Summary

> 🎸 Power your pedalboard like a pro—no cables, no limits!

## Quick Answers

- **What is this?** JOYO Built-in 4400mAh Battery, Power Supply for Guitar Effects Pedal, 8 Outputs, 9V, 12V, 18V (100mA, 500mA), Jacks and 5V/1A USB Port (JP-05) by joyo
- **How much does it cost?** ¥26238 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/649138869-joyo-built-in-4400mah-battery-power-supply-for-guitar-effects)

## Best For

- joyo enthusiasts

## Why This Product

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

## Key Features

- • **Smart LED Indicators:** Bright LED lights illuminate your pedalboard and show battery status, so you’re always in control.
- • **Multi-Device Friendly:** Integrated 5V/1A USB port doubles as a charger for your phone or tablet—never run out of juice backstage.
- • **Power Through Your Set:** 4400mAh rechargeable battery delivers up to 10+ hours for analog pedals and 2 hours for high-current digital effects.
- • **Stay Charged On The Go:** Fast 2.5-hour recharge time keeps you gig-ready without downtime.
- • **Plug & Play Versatility:** 8 DC output jacks with multiple voltage and current options to power all your pedals seamlessly.

## Overview

The JOYO JP-05 is a portable power supply featuring a built-in 4400mAh rechargeable lithium battery, 8 DC output jacks with adjustable voltages (9V, 12V, 18V), and a 5V/1A USB port. It supports long-lasting use for both analog and digital guitar pedals, offers fast charging in 2.5 hours, and includes LED indicators for battery and pedalboard lighting.

## Description

JOYO Power Supply for Guitar Pedal (JP-05),directly provided by manufacturer of JOYO Technology Co.,LTD which established at 2006. Introduction: JOYO JP-05 power supply has 8 DC outputs and 1 standard USB output, one of the 8 outputs can be switched between 9V, 12V and 18V for the odd pedals in your collection that just want a little bit more voltage. The 5V USB output enables you to load your cell phone, iPad and other portable devices. Specifications: Input voltage: DC 9V, 2000mA Output voltage: 9V,12V,18V, USB: 5V/1A Output polarity: external positive and internal negative Dimensions:146mm65mm35mm Weight: 620g. Package included: 1x JOYO JP-05 Guitar Pedal Power Supply 1x DC 9V 2A Charger Adapter 1x Reversed Polarity Cable 8x DC Power Cable 1x User Manual.

## Features

- With a built-in 7.4V/4400mAh rechargeable lithium battery pack, charging time is about 2.5hrs.
- Lasts 2 hours with high current digital effect pedals; lasts more than 10 hours with 8 analog pedals.
- One 5V/1A output USB port, compatible for charging cell phones, tablets and some other portable devices.
- Bright LED for effect pedal board lighting & battery level indicator, automatically stop charging be fully charged.
- 8 DC Output Jacks: 4 jacks 9V 100mA; 3 jacks of 9V 500mA; 1 of 9V/12V/18V adjustable output jack,maximum current is 100mA.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Output Current | 1000 milliamps |
| Output Voltage | 9 Volts (DC) |
| Output Wattage | 18 Watts |
| Form Factor | compact, rectangular box |
| Connector Type Used on Cable | Barrel Connector |
| Input Voltage | 9 Volts (DC) |
| Item Dimensions | 5.75 x 2.56 x 1.38 inches |
| Item Weight | 620 Grams |
| Material | Plastic, Metal, Other |

## Product Details

- **Brand:** JOYO
- **Colour:** Black
- **Material:** Metal, Other, Plastic
- **Item weight:** 620 Grams
- **Connector type:** DC, USB type A

## Images

![JOYO Built-in 4400mAh Battery, Power Supply for Guitar Effects Pedal, 8 Outputs, 9V, 12V, 18V (100mA, 500mA), Jacks and 5V/1A USB Port (JP-05) - Image 1](https://m.media-amazon.com/images/I/61H9U0+mByL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: When using the built in battery, is there any noise? Some people are saying that this unit isn't isolated**
A: No noise.  Just like a big 9 volt battery.  The noise comes from the transformer,  the power supply.  Even plugged in, it is pretty quiet.  Love it!

**Q: are all the  outputs are isolated? No they are not**
A: I have read definitions in terms of multi-output devices, that the grounds must be isolated, and this is not the case here. 0 ohms from center pin to center pin on adjacent connectors is enough to disqualify. However, as long as there are no ground loops in your rig, and clean connectors and cables, this shouldn't be a problem, and has never been a problem to me. This supply has inside a lot of engineering design. I opened it up and spotted a STM8S003 micro-controller and an FP5139 Boost convert chip. I wish I could get a look at the schematics to see what's really going on in there. 

But I've been using mine for about a year now, and it has been great. It powers my Electro-Harmonix 5MM power amp with 3 or 4 pedals running for hours on a charge. Never any hum or apparent interaction between pedals.

**Q: When the internal battery is dead, can it be plugged in the wall to use still?**
A: It is a rechargeable battery. The performance of a dead battery being used while being charged (It is charging if it is plugged in) will be greatly diminished. If you can plug it in there is no need for a battery powered unit. Try this instead. https://www.amazon.com/dp/B07D8NZKS6/ref=sspa_dk_hqp_detail_aax_0?psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzVFNLSFdSR0JEV0FRJmVuY3J5cHRlZElkPUEwOTcyMDM4SzlIQUpZSlFaUFYxJmVuY3J5cHRlZEFkSWQ9QTA0MTYyODIzRjNXOU44WERQWkRFJndpZGdldE5hbWU9c3BfaHFwX3NoYXJlZCZhY3Rpb249Y2xpY2tSZWRpcmVjdCZkb05vdExvZ0NsaWNrPXRydWU=

**Q: How long are the are the 8 power cables ?**
A: These cables are about 22 inches. (55cm) I hope this helps.

## Frequently Bought Together

- JOYO Built-in 4400mAh Rechargeable Battery Guitar Effect Pedal Power Supply 8 Outputs 9V 12V 18V (100mA, 500mA) Jacks & 5V/1A USB Port (JP-05)
- MXR Patch Cable 6 in|15 cm - 3 Pack (3PDCP06)
- Ghost Fire Guitar Pedal Board Aluminum Alloy 1.76lb Super light Effect Pedalboard 19.8''x11.5'' with Carry Bag,SPL-04

---

## 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.jp/products/649138869-joyo-built-in-4400mah-battery-power-supply-for-guitar-effects](https://www.desertcart.jp/products/649138869-joyo-built-in-4400mah-battery-power-supply-for-guitar-effects)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-02*