Buy CELLONIC replacement batteries for JBL Charge 4 speakers

If your JBL Charge 4 Bluetooth speaker no longer holds its charge or shuts down mid-song, it’s probably time to replace its battery. A premium CELLONIC replacement battery will give your speaker a new life, restoring charge and runtime so you can enjoy hours more of uninterrupted music wherever you go.

A weak or failing battery doesn’t mean the end for your speaker. Replacing the battery in your JBL Charge 4 is a simple, inexpensive solution that restores full power, portability and playtime – all at a fraction of the cost of buying a new speaker.

Premium CELLONIC replacement batteries are built for long-term reliability, delivering steady performance over many hundreds of charge cycles when properly cared for. Each one is precisely designed for your JBL model, ensuring a perfect fit and safe, efficient charging.

Replacing your battery isn’t just better for your wallet - it’s better for the planet. You’ll keep your speaker out of landfill, cut electronic waste and enjoy years more music and podcasts from your existing device.

✅ High-capacity 7800 mAh cells for extended playback

✅ 100% compatibility with JBL Charge 4 speakers

✅ More affordable than original JBL batteries, yet equally reliable

✅ Easy DIY installation – replace your battery at home in minutes

✅ Eco-friendly upgrade that extends your speaker’s lifespan

✅ CE-certified safety with protection against short circuit, overcharge and overheating

✅ Fast UK delivery, 30-day returns and a 3-year guarantee

Bring your JBL Charge 4 back to life with a CELLONIC battery – more power, longer playtime and reliable performance.

Technical details

Capacity: 7800 mAh

Voltage: 3.7 V Li-ion

Cycle life: Several hundred charge cycles under normal use

Cell technology: High-density lithium-ion with integrated safety circuit

Most Charge 4 units use the same standard battery specification, but there are known internal variants – please check your existing battery’s part number before ordering. 

These are the specifications for the CELLONIC 3.6 – 3.7 V / 7800 mAh Li-ion JBL Charge 4 battery replacement offered by subtel:

Replaces the following original battery models:
– JBL 1INR19/66-3
– JBL ID998
– JBL SUN-INTE-118

Compatible with:
– JBL Charge 4 (2018 release)
– JBL Charge 4 Special Edition (2019–2020 variants)

Not compatible with:
– SUN-INTE-156, GSP-1S3P-CH4A/D, IY1068
– JBL Charge 4Q

Each CELLONIC replacement battery is precisely engineered to match these models, ensuring perfect fit, safe installation and dependable power for your speaker.

Note: JBL Charge 4Q requires a different battery - also available on subtel. 

Replacing the battery in your JBL Charge 4 is straightforward with the right tools and a bit of care. Follow the steps below.

Important: Opening your speaker may reduce its waterproof protection. Always ensure all seals and covers are correctly reseated during reassembly.

Step 1. Remove the outer housing

1. Locate the gap in the cover on the underside of the speaker.
2. Insert a plastic lever or spudger into the gap and gently pry up the back part of the cover.
3. Loosen and remove the two Phillips screws now visible.
4. Carefully pull the cover apart on both sides and lift it away from the device.

Step 2. Open the battery compartment

1. Remove the two #0 Phillips screws from the front of the connector cover.
2. Gently slide the cover back to release it from its clips, then remove it completely.
3. Remove the two 6 mm Phillips screws on the outer sides and the four 8 mm Phillips screws in the centre of the panel.
4. Peel back the small piece of adhesive tape to expose the white ribbon cable’s ZIF connector.

Important: Do not remove the white ribbon cable from the circuit board – it’s extremely difficult to reconnect. Instead, carefully remove the small circuit board, which is lightly glued in place, or simply work around it. In many cases, you can access the battery without removing the board at all.
 

Step 3. Remove the old battery

1. Carefully pull on the battery to release it from its adhesive backing or bracket.
2. Pull it out just far enough to access the battery connector.
3. Press down on the white locking tab and gently disconnect the battery plug from the socket.
4. Remove the old battery from the compartment.

Step 4. Install the new battery

1. Connect the white plug of your new CELLONIC battery to the same socket.
2. Ensure the cable is neatly routed and not pinched.
3. Push the new battery securely into place.

Step 5. Reassemble and test

1. Lower the circuit board back into place if you lifted it.
2. Reattach the battery cover.
3. Refit all screws, covers and rubber seals following the steps in reverse order.
4. Fully charge your JBL Charge 4 before testing to confirm normal power and charging behaviour.

To change your JBL Charge 4 battery at home, you’ll need the following tools:

• Plastic lever or spudger
• Phillips #0 and #1 screwdrivers
• Small container for screws
• CELLONIC JBL Charge 4 replacement battery

Optional: magnetised screwdriver, tweezers, anti-static mat

At subtel, we offer precision tool kits designed for home repairs on speakers, smartphones, tablets, laptops and more.

Keep your JBL Charge 4 powered and protected with our range of JBL accessories:

• Replacement JBL chargers and USB-C charging cables
• Audio cables, including jack-to-jack (AUX) cables for wired connections to laptops and phones
• Power adapters for home or travel use
• Protective silicone soft cases

All with fast UK delivery and a 3-year guarantee.