Why Choose Us

Professional JBL Battery Manufacturer

ESC is a one-stop Li-ion polymer battery manufacturer with more than 10 years of R&D experience. The company supplies mobile phone batteries, tablet batteries, laptop batteries, JBL replacement batteries, Dyson batteries, and other consumer electronics battery products for repair shops, wholesalers, and refurbished product factories.

Factory Price with Stable Quality

ESC provides competitive factory pricing to help wholesalers, distributors, and repair channels improve market competitiveness while maintaining stable battery quality.

Strict Quality Control

ESC highlights one-by-one battery testing, 24-step full inspection before shipment, automatic production equipment, and strict quality control for repair and wholesale buyers.

OEM & ODM Support

Customized battery logo printing, private packaging, standard ESC packaging, and flexible OEM/ODM service are available for wholesale customers and private label battery brands.

Certified Battery Supply

ESC lists ISO9001, CE, RoHS, FCC, IEC62133, PSE, REACH, UL2054, MSDS, UN38.3, and other certificates for its battery product range.

12-Month Warranty

ESC provides a 12-month warranty and replacement support for qualified after-sales issues.

Global Shipping Support

Air, sea, train, and car shipment methods are available for global battery buyers, including UPS and DHL air shipment options.

Quick Specifications

What Is

The JBL Charge 4 replacement battery is a compatible Li-ion battery pack designed for replacing aging, weak, swollen, or non-charging batteries in JBL Charge 4 Bluetooth speakers. It is suitable for Bluetooth speaker repair shops, refurbished speaker facilities, consumer electronics parts wholesalers, e-commerce repair parts sellers, and private label battery distributors.

This battery uses brand-new pure cobalt cells and a PCM protection board to help restore speaker runtime, charging stability, and daily usability when the old JBL Charge 4 battery can no longer hold charge properly.

Key Features

1.7800mAh Capacity for JBL Charge 4 Repair

The listed 7800mAh capacity supports JBL Charge 4 speaker repair and refurbishment needs, helping provide a replacement battery option for used or aging Bluetooth speakers.

2. Brand-New Pure Cobalt Cell

The battery uses a brand-new pure cobalt Li-ion cell, supporting stable output, reliable replacement quality, and repeatable performance for professional repair channels.

3. PCM Safety Protection

The PCM board provides protection against over-charge, over-discharge, and short circuit to support safer charging and daily speaker use.

4. OEM Logo and Packaging Support

ESC supports customized logo printing on the battery and private packaging, making the product suitable for wholesalers, distributors, e-commerce sellers, and private label battery brands.

5. Wholesale Supply with Warranty Support

The product is suitable for repair shops, speaker refurbishment facilities, electronics parts wholesalers, and distributors that need repeatable supply, stable quality, and after-sales support.

Technical Specifications

Compatible Models

Applications

Bluetooth Speaker Repair Shops

Suitable for repair shops replacing weak, aging, swollen, or non-charging JBL Charge 4 speaker batteries.

Refurbished Speaker Facilities

Useful for refurbishers repairing and reselling used JBL Charge 4 speakers that need stable battery replacement quality.

Electronics Parts Wholesalers

Suitable for wholesalers building a JBL speaker battery product line for local repair channels and distributors.

E-Commerce Repair Parts Sellers

Can be used by online sellers offering compatible JBL Charge 4 replacement battery products or speaker repair kits.

Private Label Battery Brands

Supports OEM battery labels and customized packaging for customers building their own replacement battery brand.

Comparison with Original Battery

Client FAQ

1. Is this battery compatible with JBL Charge 4?

Yes. This product is positioned as a JBL Charge 4 replacement battery. Buyers should confirm the old battery model, connector, size, and speaker version before bulk ordering.

2. What is the capacity of this JBL Charge 4 replacement battery?

The ESC product page lists the battery capacity as7800mAh.

3. What is the standard voltage?

The ESC product page lists the standard voltage as 3.7V. Buyers should compare the old battery label, connector, and speaker version before ordering in bulk.

4. What type of battery cell is used?

The product page describes the cell as a brand-new pure cobalt Li-ion battery cell.

5. Does this battery include protection?

Yes. The battery uses a PCM board with protection against over-charge, over-discharge, and short circuit.

6. Can ESC customize my logo and packaging?

Yes. ESC supports customized logos on the battery and customized private packaging for OEM/ODM orders.

7. What is the MOQ?

The parameter table lists MOQ as 20 pcs, while the FAQ states MOQ is 100 pcs mixed models. Buyers should confirm the final MOQ based on model mix, packaging, stock, and order requirements.

8. What certificates are available?

ESC lists ISO9001, CE, RoHS, FCC, IEC62133, PSE, REACH, UL2054, MSDS, UN38.3, and other certificates for the battery category.

9. What is the warranty policy?

ESC lists a 12-month warranty and replacement support for qualified complaints without requiring damaged batteries to be returned.

10. Who should buy this JBL Charge 4 replacement battery?

This battery is suitable for Bluetooth speaker repair shops, refurbished speaker facilities, electronics parts wholesalers, JBL replacement battery distributors, e-commerce repair parts sellers, and private label battery brands.