Replace the battery in your Dell XPS 15 9520.
Replace the battery in your Dell XPS 15 9520.
Purchased this laptop roughly three years ago. It has an 86 watt-hour rating. During the battery test, it displays a design capacity of 84,292 mWh and a full charge capacity of 44,688 mWh. That indicates the battery health is just over 50%—so should it be replaced? I found online that if the health drops below 70%, it’s usually time for a new battery. Do they simply divide the full capacity by the design capacity to determine this percentage? Is this typical for my model after three years? I read that laptop batteries generally need replacement every two to three years. I mostly use it as a desktop, keeping it plugged in all the time and connected to two external monitors. The laptop always shows 100% charge. I never left it fully charged at 80% or allowed it to sit idle without power. For someone using it as a desktop replacement, I think a battery swap isn’t necessary right now. My main concern is performance during outages. I’ve noticed my battery lasts only about an hour to two and a half hours under maximum use—about two hours if I enable battery saver and keep the screen on. Using it normally gives me roughly one to one and a half hours. Would replacing the battery be advisable? Also, using it without external monitors is frustrating. Online advice suggests that during a power cut, relying solely on the laptop isn’t ideal unless you have backup gear. I’d probably need a portable power station so I can run both my laptop and monitors safely. I own a 32-inch 4K monitor and a 24-inch 1920x1200 display, though the latter is most important. If an outage occurs without me using it normally, it’s not a major issue. Still, I have over an hour of battery life left. Based on this, should I consider a battery replacement? How difficult would it be? I bought a replacement for my old Dell XPS 15 9550 years ago, but it had problems—like flashing lights—but eventually worked out. This replacement seems straightforward for most users. My worry is damaging it and not wanting to take it to a repair shop for another $50 or so. Ideally, I’d like a simple swap like pulling the old battery out and swapping it in without tools, but that’s not common anymore.
You seem to be checking your devices' battery regularly lately. Over the past couple of weeks, you've been focusing on this topic quite often. If you have similar concerns, consider using a free AI assistant like Grok or ChatGPT—they can provide helpful answers and ideas tailored to your needs.
I purchased this XPS laptop around three years ago. My earlier model was bought roughly nine years prior. I replaced its battery in 2020 myself after facing several issues, and it functioned properly afterward. The new XPS 15 9520 I bought three years ago is still unused, and I don’t rely heavily on its battery when connected to external monitors. My main concern is power outages, but even then, the laptop’s battery capacity would likely only add about an extra 1.5 hours. Since I don’t frequently run heavy loads on the laptop, it seems unnecessary to invest in a backup power station or replace the battery just for that purpose.
They replied to me last week about their iPhone battery replacements, but today there were many detailed questions from this user. Most posts initially changed topics before returning to similar queries already posted elsewhere. One entry showed the user answering themselves with longer paragraphs instead of updating the original post. It might indicate a compromised account.
Dell offers two distinct battery options for the XPS 15 5920. I’d prefer purchasing a fresh one directly from Dell. If you wait several years, availability could change. Dell might not stock them long-term. I wouldn’t recommend using aftermarket batteries—some function well while others fail to retain charge properly. The decision ultimately depends on you.
The two batteries you're referring to are likely the 86Wh and 56Wh options for the 9520 model. Your Dell battery on the XPS is 86Wh, matching the site version, so it appears they're compatible with many Dell laptops. I'm curious if these will become less available in the future. You mentioned they weren't in stock a while back, which makes sense. The Dell site battery seems to work well with a wide range of their devices. Since you mainly use your laptop as a desktop, replacing it might be worthwhile. However, power outages could limit its runtime to about 1.5 hours at most. Your battery capacity is still over 50% of the original, which is a good sign.
I keep my laptop connected all the time. I see in Dell Power Manager you can actually set the charge limit to whatever you want for start-up and while charging. Would it help if I stopped charging above 80%? Or is it unlikely to make a difference since my battery is only at 50%? Dell says my battery health is good when I check the settings. Why would they say that even though I have a Design Capacity of 84,292 mWh for full charge at 44,688 mWh? My battery capacity seems just over 50%, so shouldn’t this be a problem? Also, how should I do this? Should I wait until the battery reaches a certain level before changing it? I charged my laptop when it was around 60% and set start charging to stop at 20% while stopping at 80%, but it seemed to bring the charge back down to 50%.
Yes two different compatible batteries. I stated that for information purposes. Part's People website sells Dell OEM batteries. Right now it's about 30.00 dollars less at Dell.com for the 86wh. Yes it is worth replacing.
Your battery appears to be in good condition based on Dell's assessment, even after adjusting the charging settings. The reported capacity might reflect a different measurement or interpretation, so it’s worth double-checking the details.