How to Charge JBL Charge 4? Complete Process
By Robert Jones · 2021-07-13
Right, so you've got yourself a JBL Charge 4, eh? Good choice. They're cracking little speakers, properly solid for tossing in a bag and taking down the park, or just having in the garage while you're tinkering. I get a lot of mail asking about the best way to charge these, so I figured I'd lay it all out.
Right, so you've got yourself a JBL Charge 4, eh? Good choice. They're cracking little speakers, properly solid for tossing in a bag and taking down the park, or just having in the garage while you're tinkering. I've had a few of these roll through the workshop over the years, mostly for quick checks or to see how they stack up against the competition. They're pretty resilient, but like all good tech, they need a bit of juice to keep the tunes flowing. I get a fair bit of mail from folks asking about the best way to keep these charged up, especially with all the different cables and plugs knocking about these days. It's not exactly rocket science, but there are a few little bits and bobs worth knowing to make sure you're doing it right and not messing up your battery. So, I figured I'd lay it all out for you, plain and simple. **Quick Verdict:** _The JBL Charge 4 is simple to charge, just use a decent USB-C cable and a 5V/2A wall adapter for best results._ ### Who it's for: * Anyone who uses their Charge 4 regularly and needs reliable charging info. * Owners wanting to maximise their speaker's battery life. * Folks who travel a lot and need efficient charging on the go. ### Who should skip it: * If you already know the ins and outs of USB-C charging, you probably won't learn much new here. * If you're after a deep dive into battery chemistry, this isn't the article for that.  *How to Charge JBL Charge 4? Complete Process — tested in the SpeakersMag workshop.* ## Getting Started: What You'll Need for a Proper Charge Honestly, charging the Charge 4 is pretty straightforward. You won't be needing any fancy, expensive gear. Most of the stuff you need probably came in the box or is already knocking about your house. It's more about using the *right* bits in the right way. ### The Cable: USB-C is Your Friend This is the main event. Your JBL Charge 4 uses a USB-C cable. It usually comes in the box with the speaker. If you've lost yours, don't fret; they're pretty common these days. You can pick one up for a few quid online or from any electronics shop. Just make sure it's a decent quality one. I've seen some really flimsy cables out there that can cause charging issues or even damage ports in the long run. Not worth saving a fiver on a rubbish cable, trust me. USB-C is that slightly oval-shaped plug. The beauty of it is that it's reversible, so you can't really get it in upside down. A lovely invention, saves a lot of faffing about in the dark or when you're a bit bleary-eyed in the morning. On one end, it's USB-C for the speaker, and usually, the other end is a standard USB-A, which is the rectangular one that goes into your wall adapter or power bank. ### The Power Source: Wall Adapter or Power Bank Now, this is where a few folks get confused. You can't just plug the USB cable straight into a wall socket, can you? You need an adapter, that little block you plug into the wall. Most phone chargers these days will do the trick. You're looking for something that puts out at least 5V/2A (that's 5 Volts and 2 Amps). It might say 10W (Watts) on it, which is 5V multiplied by 2A. If you use a lower-powered one, say an old 5V/1A charger, it'll still charge, but it'll take an absolute age. We're talking hours more. I've got a few old iPhone chargers knocking about that are usually 5V/1A, and while they work in a pinch, I wouldn't rely on them for a quick top-up. For the best speed and to ensure the speaker gets enough juice without struggling, stick to that 5V/2A minimum. Some folks use a power bank, which is perfectly fine. Just make sure the power bank can also deliver at least 5V/2A from one of its USB-A ports. Most modern power banks are capable of this, especially the larger capacity ones. Always check the small print on the charger or power bank if you're unsure. ### Your JBL Charge 4: The Main Event Obvious, I know, but worth mentioning! Make sure it's not already fully charged, mind. No point charging a full battery; that's just wasting electricity and putting unnecessary cycles on the battery. We'll get into how to tell if it's full in a bit. ## The Charging Process: Simple as Pie, Mostly Right, let's get down to brass tacks. This is hardly brain surgery, but follow these steps and you'll be fine. I'll also throw in a few tips I've picked up over the years. 1. **Locate the Charging Port:** On the back of the Charge 4, there's a little rubber flap. It's usually quite snug, and that's for a good reason – it keeps the water and dust out, which is handy if you're clumsy like me or using it outdoors. Peel that back gently. Don't tug it like you're opening a tin of beans; be firm but gentle. You'll see the USB-C port in there. There's also a standard USB-A port you can use to charge your phone *from* the speaker – pretty neat, that, turning your speaker into a power bank for your phone in a pinch. More on that later. 2. **Plug in the USB-C Cable:** Take the USB-C end of your cable and push it firmly into the Charge 4's charging port. You'll feel it click into place. Don't force it if it doesn't go in easily, but don't be shy either. It should slide in without too much bother. 3. **Connect to Power:** Take the other end of the USB-C cable (the standard USB-A end) and plug it into your wall adapter. Then, plug the adapter into a mains socket. If you're using a power bank, plug it into an available USB-A port on the power bank. ### How Do I Know It's Charging? Lights, Please! Once you've got everything plugged in, you'll want to know it's actually working, right? The JBL Charge 4 has a set of five small LED lights on the front, usually just below the JBL logo. These are your battery indicator lights. When you first plug it in, these lights should start pulsing or flashing sequentially. That's your visual cue that charging is underway. If they're all lit solid, it means the battery is full. If no lights come on, check all your connections and try a different adapter or cable if you have one. Sometimes a dodgy cable is all it takes to stop things working. ### How Long Does It Take? This is the million-dollar question, isn't it? A full charge from completely flat on a JBL Charge 4 usually takes about **4 hours** when using a 5V/2A charger. If you're using a lower-power charger, it could easily take 6, 8, or even more hours. I've seen some folks complain about slow charging, only to find they're using a tiny old charger that couldn't power a flea. Keep in mind that the first few LED segments charge quicker than the last ones. The final bit of charging, especially going from 90% to 100%, can sometimes feel like it takes the longest. This is normal and helps preserve battery health. ## Battery Life: What to Expect and How to Maximise It JBL claims up to 20 hours of playback for the Charge 4. Now, in my experience, that's usually under ideal conditions: moderate volume, specific music types, and a fresh battery. In the real world, you're probably looking at closer to 12-15 hours if you're playing it a bit louder or using it to charge your phone now and then. Still, that's a solid day's worth of tunes, which is pretty good for a speaker this size. ### Tips for Maximising Battery Life: * **Volume Control:** This is the biggest one. The louder you play your music, the faster the battery drains. Obvious, I know, but worth reiterating. Keep it at a comfortable listening level, and you'll get more playtime. * **Charge Your Phone Sparingly:** That handy USB-A port for charging your phone is great in an emergency, but remember, every bit of power it pushes to your phone is power *not* going to playing music. Use it when you really need it, not as your primary phone charger. * **Avoid Extreme Temperatures:** Don't leave your Charge 4 baking in the sun or out in freezing cold weather. Batteries don't like extremes. It can degrade their performance and shorten their overall lifespan. * **Don't Drain it Completely Every Time:** While it's good to let the battery run down occasionally, constantly running it to zero isn't ideal for modern lithium-ion batteries. Try to charge it when it gets down to 20-30% if you can. * **Store Partially Charged:** If you're putting the speaker away for a long period (say, a month or more), try to leave it with about a 50-70% charge. Don't store it fully charged or completely flat, as both can stress the battery over time. ## Common Charging Questions & Troubleshooting Sometimes things don't go as smoothly as planned. Here are a few common issues and what I'd suggest checking. ### My JBL Charge 4 isn't charging! * **Check the Cable:** First port of call. Try a different USB-C cable if you have one. They can get kinked, frayed internally, or just become faulty. I've got a drawer full of them, mostly from trying to figure out if it's the device or the lead. * **Check the Wall Adapter/Power Source:** Is the adapter working? Try plugging something else into it, like your phone. If that doesn't charge, the adapter's probably dead. Try a different wall socket too, just in case. * **Inspect the Ports:** Take a torch and have a good look at the USB-C port on the speaker. Is there any fluff, dust, or debris jammed in there? A bent pin? Sometimes a tiny bit of pocket fluff can stop a connection. Be careful if you try to clean it out; use a wooden or plastic toothpick, not metal. * **Soft Reset:** Sometimes, electronics just need a kick up the backside. With the speaker on, try holding down the Bluetooth and Volume Down buttons simultaneously for about 10-15 seconds. The speaker should power off. Then try charging again. * **Battery Degradation:** If the speaker is very old (several years) and has had a lot of heavy use, the internal battery might just be on its way out. That's natural wear and tear. At that point, it's usually more cost-effective to replace the speaker than try to get the battery changed. ### Can I use my Charge 4 while it's charging? Yes, absolutely. You can play music while it's plugged in and charging. Just be aware that it might charge a little slower, especially if you're cranking the volume right up. The power coming in is split between charging the battery and powering the speakers. ### Can I charge my phone and play music at the same time? Technically, yes. But honestly, I wouldn't recommend it for prolonged periods. It puts a lot of strain on the battery and the charging circuit of the Charge 4. It'll charge your phone very slowly, play your music, and the speaker itself will barely charge, if at all. Use it as a last resort for your phone, not a regular thing. ## Understanding USB-C: A Quick Explainer USB-C is a fantastic step forward from the older micro-USB. It's faster, more powerful, and reversible. It's become the standard for most modern gadgets, from phones to laptops, and even some of the higher-end portable speakers like the Charge 4. This standardisation is great because it means fewer cables to carry around, and you're less likely to find yourself without the right charger. The key thing for charging is the power delivery. While USB-C *can* handle higher voltages and amperages (which is why it charges laptops), for the JBL Charge 4, it's designed to take a standard 5V/2A input. No need for any fancy Power Delivery (PD) chargers here; a bog-standard USB-A to USB-C cable with a 5V/2A adapter does the trick. Don't worry about overcharging either; the speaker has built-in circuitry to prevent that once the battery is full. ## Protecting Your Investment: Maintenance Tips Your JBL Charge 4 is built to be rugged, but a little care goes a long way in ensuring it lasts you for years. Especially important for the charging port! * **Keep the Flap Closed:** That rubber flap isn't just for show. It's crucial for maintaining the speaker's IPX7 waterproof rating. Always make sure it's securely closed when you're not charging and especially if you're near water or dusty environments. * **Gentle with the Ports:** When plugging in or unplugging cables, do it gently. Don't yank them out at an angle. This can stress the port and eventually lead to damage, which is a right pain to fix. * **Cleanliness:** Every now and then, give the port area a quick check for debris. If you need to clean it, use a soft, dry brush or a can of compressed air. Avoid liquids. * **Don't Overcharge:** While the speaker has protection, constantly leaving it plugged in for days on end after it's full isn't ideal for battery longevity. Once it's full, unplug it. ### A Note on Replacement Chargers and Cables If you need to replace your cable or adapter, you don't necessarily need to buy a JBL-branded one. Any reputable third-party USB-C cable will do, as long as it's decent quality. For the adapter, again, any standard 5V/2A (or 10W) USB wall charger from a known brand (Anker, Belkin, Samsung, Apple, etc.) will work perfectly. Just avoid the really cheap, unbranded ones you find for a couple of quid at a market stall; they can be unreliable or even dangerous. ## Comparison: JBL Charge 4 vs. Other Portable Speakers (Charging Perspective) Let's be honest, charging a portable speaker isn't exactly a thrilling topic, but it's a fundamental aspect of owning one. The Charge 4, with its USB-C port, is pretty standard for modern portable speakers. Many of its contemporaries and successors follow a similar pattern. | Feature | JBL Charge 4 (This Review) | JBL Flip 5 (Smaller) | JBL Charge 5 (Successor) | | :------------------ | :--------------------------------------------- | :----------------------------------------- | :--------------------------------------------- | | **Charging Port** | USB-C | USB-C | USB-C | | **Charger Output** | 5V/2A (10W) Recommended | 5V/3A (15W) Recommended | 5V/3A (15W) Recommended | | **Charge Time (Flat)** | ~4 hours | ~2.5 hours | ~4 hours | | **Battery Life** | Up to 20 hours | Up to 12 hours | Up to 20 hours | | **Power Bank Feature** | Yes (USB-A output) | No | Yes (USB-A output) | | **Waterproof Rating** | IPX7 | IPX7 | IP67 | As you can see, the Charge 4 is right in line with what you'd expect. Its successor, the Charge 5, actually uses a slightly higher recommended charging input (5V/3A), which means if you use a Charge 5 charger on a Charge 4, it'll work fine as it's backward compatible and the speaker will only draw what it needs. But a 5V/2A charger is perfectly adequate for the Charge 4. The Flip 5, being smaller, charges quicker but also has less battery life. It also ditches the power bank feature, which I think is a bit of a shame. ## FAQ: Your Charging Queries Answered ### Q: Can I charge my JBL Charge 4 with a laptop's USB port? A: You can, but it will be very slow. Most laptop USB-A ports only output 0.5A (USB 2.0) or 0.9A (USB 3.0). Even USB-C ports on laptops might only offer 5V/1A unless they're specifically designed for higher power delivery. So, yes, it will charge, but expect it to take upwards of 8-10 hours, if not more. Best for an absolute emergency. ### Q: Is it bad to leave my JBL Charge 4 plugged in all the time? A: It's generally not recommended to leave any modern lithium-ion battery device constantly plugged in once it's fully charged. While the Charge 4 has overcharge protection, continuous trickle charging can still put minor stress on the battery over a very long period, potentially shortening its overall lifespan. It's best to unplug it once it's full. ### Q: My Charge 4 gets warm while charging. Is this normal? A: A slight warmth is completely normal during charging, especially if the battery is quite low or if you're also playing music at a high volume. If it gets excessively hot to the touch, however, unplug it immediately and check your cable and adapter. Excessive heat can indicate a fault. ### Q: Can I use a fast charger from my phone for my Charge 4? A: Most modern phone fast chargers use various Power Delivery (PD) or Quick Charge (QC) protocols. While a USB-C fast charger *will* work with the Charge 4, the speaker itself will only draw the standard 5V/2A it's designed for. It won't "fast charge" any quicker than with a regular 5V/2A adapter, as it doesn't support those protocols. So, it's safe to use, but don't expect miracles in terms of speed. ### Q: What should I do if the charging port feels loose? A: A loose charging port is a common issue with heavily used portable devices. If it's very loose, it might struggle to make a reliable connection or could even be damaged. First, ensure it's not just some debris preventing the cable from seating properly. If it genuinely feels wobbly or the cable keeps falling out, you might need to look into professional repair, though for a speaker like the Charge 4, it's often not economically viable. Sometimes, a very high-quality, snug-fitting cable can help if the looseness is minor. ## Final Word So there you have it. Charging your JBL Charge 4 is pretty much a doddle once you know what you're doing. It's all about using the right cable, a decent power adapter, and giving it enough time. Keep an eye on those LED lights, and you'll know exactly where you stand with your battery level. These speakers are built for adventures, for bringing tunes to the beach, the workshop, or just chilling in the garden. Keeping them properly juiced up ensures they're always ready to go when you are. Don't overthink it, but don't neglect the basics, and your Charge 4 will serve you well for many a year. Happy listening, folks!