OnePlus 5 Battery Replacement: Cost & DIY Guide
A OnePlus 5 battery replacement runs about $15-30 for the part if you do it yourself, or roughly $50-80 at a local repair shop. It's a genuinely DIY-friendly job for anyone comfortable with a heat source and a few pry tools, and on a phone this old it's the single cheapest way to bring it back to a full day of use.
The OnePlus 5 (model A5000) launched in June 2017, making it eight years old in 2026. If you're still running one, you're almost certainly on your second or third battery's worth of life — the original 3300 mAh cell was never meant to last this long, and years of Dash Charge heat have taken their toll. The good news: the fix is cheap, and it keeps a perfectly capable phone out of a landfill.
Why the OnePlus 5 battery wears out faster than you'd expect
Every lithium-ion battery degrades with charge cycles, but the OnePlus 5 has a specific accelerant: Dash Charge. OnePlus's 20W (5V/4A) fast-charging system pushes a lot of current, and while the electronics were designed to shunt heat into the adapter and cable, the cell still runs warm during every top-up. Heat is the number-one enemy of battery chemistry, so eight years of daily warm charging leaves noticeably reduced capacity even if the phone was babied.
Most OnePlus 5 units have also crossed 800-1,000 full charge cycles by now. Manufacturers rate cells to hold about 80% of capacity at roughly 500 cycles — double that, and you may only get 60-70% of the 2017 runtime. That's why a phone that once lasted all day now begs for a charger by mid-afternoon.
How to check your OnePlus 5 battery health
An honest limitation first: OxygenOS on the OnePlus 5 has no built-in battery health percentage the way a newer iPhone or current OnePlus does. You can still learn a lot from the tools you have.
- Settings → Battery shows your usage breakdown, estimated time remaining, and which apps drain the most power. Watch for a percentage that drops in big jumps (say, 40% straight to 25%) — that "voltage sag" is a classic sign of a tired cell.
- Settings → Battery → Battery usage confirms whether a rogue app is the culprit before you blame the hardware.
For an actual capacity estimate, install AccuBattery from the Play Store, the standard third-party tool for Android battery health. It measures the charge flowing into your phone over several full sessions and compares that to the rated 3300 mAh. It's an approximation, not a factory-grade reading, and needs a few cycles to settle. But if AccuBattery reports your OnePlus 5 holding only 2,000-2,300 mAh of its original 3,300, that's a clear, data-backed case for a new battery.
Signs your OnePlus 5 battery is failing
You usually don't need an app to know. Common symptoms of a worn OnePlus 5 battery:
- OnePlus 5 battery draining fast — full charge to empty in a few hours of light use, or heavy overnight drain while idle.
- Random shutdowns or reboots, often at 20-30% remaining, especially in the cold or under load — the aging cell can't deliver peak current.
- OnePlus 5 battery not charging past a certain point, charging extremely slowly, or Dash Charge no longer kicking in.
- The phone runs hot even during light tasks.
Safety note on swelling: if the back glass is lifting, the screen is being pushed up, or the phone rocks on a flat table, stop using it. A swollen lithium battery is a fire and rupture hazard. Do not puncture, bend, or squeeze it — power the phone down, keep it somewhere non-flammable, and replace the battery promptly.
OnePlus 5 battery replacement cost
Because the OnePlus 5 is long past its official support window, your realistic options in 2026 are a repair shop or a DIY swap. Here's how the OnePlus 5 battery replacement cost breaks down:
| Option | Typical 2026 price | Notes |
|---|---|---|
| Manufacturer (OnePlus) | Not available | The OnePlus 5 is end-of-life; OnePlus no longer offers official battery service for it. |
| Local repair shop | $50-80 | Part plus labor. Many shops need to order the cell first, since it's an older model. |
| DIY with a quality part | $15-30 | Just the replacement battery. Add a cheap tool kit if you don't own one. |
DIY is the clear value play: on a phone worth maybe $40-70 used, a $20 part you install yourself makes far more sense than a $70 shop bill. Browse current pricing on our OnePlus 5 replacement battery listing or the full replacement batteries collection.
The exact replacement battery for the OnePlus 5
The OnePlus 5 uses a 3300 mAh lithium-polymer battery carrying the part number BLP637 (3.85V nominal). It fits the single OnePlus 5 hardware variant, sold as model A5000. There is only one battery to worry about for this phone, which simplifies ordering — just confirm the BLP637 designation and the 3300 mAh rating.
A quality OnePlus 5 OEM battery or a reputable aftermarket equivalent matches that capacity and voltage exactly. Avoid no-name cells advertising wildly higher capacities in the same shell — the OnePlus 5's chassis can't hold more than about 3300 mAh of real cell, and inflated ratings signal a cheaply made pack. A fresh, honest 3300 mAh cell restores the full day of use the phone had in 2017.
How to replace the OnePlus 5 battery yourself
The OnePlus 5 is a glued-back phone, so the job is a little more involved than a pop-off-cover swap, but it's well within reach for a patient first-timer. Here's how to replace the OnePlus 5 battery, step by step:
- Power off the phone; ideally run the battery below 25% first, since a low charge is safer to handle.
- Remove the two bottom screws beside the USB-C port.
- Soften the back-cover adhesive with gentle heat (a hair dryer or heat pad, ~30-45 seconds) and slice through the glue with a thin pick, working slowly around the edges.
- Disconnect the battery connector first, before touching anything else, to kill power to the board.
- Release the old battery's adhesive. OnePlus used strong glue with no pull-tabs — a few drops of isopropyl alcohol under the edge and a plastic card help loosen it. Never pry a battery with a metal tool.
- Seat the new BLP637, reconnect the connector, and confirm the phone powers on before re-gluing anything.
- Reapply adhesive, press the back cover firmly, and reinstall the two screws.
Honest difficulty rating: 3 out of 5 (moderate). Nothing is exotic, but the adhesive requires patience and the back glass can crack if you rush the heat-and-pry step. Budget 45-60 minutes for a first attempt and don't force anything.
After the swap
Unlike an iPhone, the OnePlus 5 won't throw a "genuine part" warning or lock any battery-health screen — OxygenOS on this generation doesn't police battery parts, so a quality aftermarket or OEM cell works with no software nagging. For accurate readings from day one, calibrate once: charge to 100%, use the phone until it shuts off on its own, then charge uninterrupted back to 100%. That helps the fuel gauge relearn the new cell's true capacity. Dash Charge keeps working with a healthy battery, as long as you use the original Dash cable and adapter.
Repair vs. upgrade: keep the OnePlus 5 alive
A new phone is hundreds of dollars; a OnePlus 5 battery is around $20. For a device whose Snapdragon 835, 6-8GB of RAM, and clean display still handle calls, messaging, media, and everyday apps just fine, the math is lopsided. Spending $20 to reclaim a full day of runtime instead of $400 on a new handset is the definition of a smart repair.
It's also the greener choice. Manufacturing a single new smartphone generates far more carbon and e-waste than shipping a small replacement cell. Every OnePlus 5 that gets a new battery instead of a trip to the recycler is one fewer device mined, assembled, and boxed — that's the whole idea behind repairing instead of replacing. If you're weighing options across several devices, our battery replacement by model guide covers the rest of the lineup.
FAQ
How much does a OnePlus 5 battery replacement cost?
Expect $15-30 for the battery part if you replace it yourself, or roughly $50-80 at a local repair shop that includes labor. OnePlus no longer offers official service for this end-of-life model, so DIY or an independent shop are your two routes.
How do I replace the OnePlus 5 battery?
Power off, remove the two bottom screws, warm and pry off the glued back cover, disconnect the battery connector, release the old cell's adhesive, and seat a new 3300 mAh BLP637 battery. Test before re-gluing. It's a moderate, roughly 45-60 minute job for a careful first-timer.
Why is my OnePlus 5 battery draining fast?
After eight years and hundreds of Dash Charge cycles, the original cell has lost a large chunk of its capacity, so it drains faster and sags under load. Rule out a runaway app in Settings → Battery first, but persistent fast drain on a 2017 phone almost always means the battery itself is worn out.
My OnePlus 5 battery is not charging — is it the battery or the port?
Test with a known-good Dash cable and adapter, and clean the USB-C port of lint. If it still won't charge, charges only to a low ceiling, or dies well before 0%, a degraded battery is the likely cause. A swollen battery can also stop normal charging — inspect for a lifting back cover.
Do I need a genuine OnePlus 5 OEM battery, or will aftermarket work?
Both work. What matters is buying a quality 3300 mAh BLP637 cell from a reputable seller. OxygenOS on the OnePlus 5 doesn't reject non-original batteries, so a well-made aftermarket cell performs the same. Steer clear of suspiciously high-capacity "upgrade" packs.
Is it worth replacing the battery in an eight-year-old OnePlus 5?
Yes, if the phone still does what you need. A roughly $20 battery restores a full day of runtime for a fraction of a new phone's price and keeps a working device out of the waste stream — one of the highest-value repairs you can do.