iPhone SE (2020) Battery Replacement: Cost & Guide
Replacing the battery in a second-generation iPhone SE (2020) costs about $10 to $25 in parts if you do it yourself, compared with roughly $89 at Apple. The SE (2020) uses the same easy-to-open chassis as the iPhone 8, so this is a genuinely beginner-friendly repair that takes most people under an hour.
By 2026 the iPhone SE (2020) is around six years old, and that's the real story here: even a lightly used phone this age has cycled its battery hundreds of times. If yours can't make it through the afternoon anymore, the tiny 1821 mAh cell — not the phone — is almost certainly to blame, and it's cheap to fix.
Why a six-year-old SE (2020) needs a new battery
The SE (2020) shipped with just 1821 mAh, the smallest cell of any iPhone SE generation. Apple rates these lithium-ion packs for about 500 full charge cycles before they fall to roughly 80 percent of original capacity. A phone in daily use since 2020 has long passed that mark, so declining iPhone SE 2020 battery life is expected wear, not a malfunction.
The upside: the A13 Bionic inside is still perfectly capable for calls, messaging, banking, and everyday apps. A $15 battery gives this phone years more life — a much smarter move than tossing a working device.
How to check your iPhone SE (2020) battery health
Confirm the diagnosis before you buy a part. Open Settings > Battery > Battery Health & Charging and read the Maximum Capacity figure, which is measured against the original 1821 mAh.
- 85-100%: Still healthy — investigate apps or settings instead.
- 80-84%: Noticeable decline; a swap will help.
- Below 80%: Worn out. iOS often shows a "Service" note here, and this is the ideal time to replace.
On a phone this old, most units read well under 80 percent. If you also see a Peak Performance Capability message about performance management after an unexpected shutdown, the cell can no longer supply peak current — a firm signal it's time.
It's worth running this check even if the phone feels fine, because capacity fades gradually and you adapt to it without noticing. Many SE (2020) owners are surprised to learn their battery has slipped into the 60s or 70s. Once you have the number, the decision becomes simple: anything under 80 percent is a good candidate for a swap.
Signs your iPhone SE (2020) battery is failing
- Your iPhone SE 2020 battery draining fast, dropping 20% or more overnight on standby.
- Abrupt shutdowns at 25-40%, particularly in the cold.
- The phone feels warm during light use.
- Your iPhone SE 2020 battery not charging reliably, or stalling at a set percentage.
- The screen sitting proud of the frame or the phone rocking on a flat surface.
Safety note: that last point is serious. A battery that swells enough to push the display up is a fire hazard. Stop charging it, power the phone down, and replace the cell right away. Do not press the screen back down, puncture the battery, or keep using a swollen pack.
iPhone SE (2020) battery replacement cost
Realistic 2026 pricing for an iPhone SE 2020 battery replacement cost looks like this:
| Option | Typical 2026 price | What you get |
|---|---|---|
| Apple (out of warranty) | ~$89 | Genuine cell, certified install, no battery-health warning |
| Local repair shop | $50-$80 | Aftermarket or OEM-pull cell, usually same day |
| DIY replacement | $10-$25 (parts) | Battery, adhesive strips, and basic tools |
On a six-year-old phone, paying Apple's $89 rarely makes financial sense. DIY parts often cost less than a takeout dinner and restore full-day runtime. Browse current cells and tools in our replacement batteries collection.
The exact replacement battery for the SE (2020)
The iPhone SE (2020) uses a 3.82V, 1821 mAh lithium-ion battery. It fits the model numbers A2275, A2296, A2297, and A2298 — check yours under Settings > General > About. Note that the SE (2020) cell is essentially the iPhone 8 battery and is not the same part as the SE (2022), so order the one made for the second-gen SE.
When choosing an iPhone SE 2020 OEM battery, favor a zero-cycle cell with a recent manufacture date; a bargain-bin battery frequently arrives already worn. One detail people forget: you need fresh adhesive strips to secure the new cell. Our iPhone 8-series battery adhesive strips (50-pack) fit the SE (2020) perfectly and are handy if you service more than one phone. Wholesale pricing is available for shops.
How to replace the iPhone SE (2020) battery yourself
Here's how to replace your iPhone SE 2020 battery, step by step. Because it shares the iPhone 8's internals, this is one of the best-documented iPhone repairs anywhere.
- Power off and remove the two pentalobe screws flanking the charging port.
- Warm the lower edge gently, then use a suction cup and pick to lift the display from the bottom. The screen swings up on a hinge at the top, where the cables sit.
- Protect the Touch ID cable. It's bonded to the display and paired to your phone — damage it and Touch ID stops working permanently.
- Remove the metal bracket over the battery connector and disconnect the battery before touching any other cable.
- Pull the stretch-release adhesive tabs at the base of the cell slowly and flat. If one breaks, add a little heat and ease the battery out with a plastic tool — never metal.
- Lay down fresh adhesive strips, seat the new 1821 mAh cell, reconnect, and reassemble in reverse.
Honest difficulty rating: 4 out of 10. The chassis is forgiving and the parts are cheap, but the Touch ID flex and the adhesive tabs reward a slow hand. Give yourself 45-60 minutes the first time.
After the swap: the "Unknown Part" message
After powering on, iOS may display an "Unknown Part" alert and show Battery Health as unavailable with a service note. This is normal for any iPhone SE (2020) running a non-Apple battery, because Apple pairs each cell to the logic board. The phone charges and performs exactly as before — you simply lose the capacity percentage readout. It does not indicate a bad battery.
Repair vs. upgrade: is it worth it?
Buying a whole new phone to cure a dead battery on an otherwise working SE (2020) is the definition of overkill. A $15 cell brings back full-day endurance and buys years more service from a device that still handles daily tasks fine. It's also the environmentally sound call — every battery swap keeps a functional phone, and the resources locked inside it, out of the landfill. Repair, don't replace.
If you'd rather not open the phone, searching iPhone SE 2020 battery replacement near me will find a local shop, but DIY stays the cheapest path. Working on a different model? Our battery replacement by model guide covers the whole iPhone range.
FAQ
How much does an iPhone SE 2020 battery replacement cost?
DIY parts run about $10-$25, a local repair shop charges roughly $50-$80, and Apple charges about $89 out of warranty. On a phone this age, DIY is by far the best value.
How do I replace my iPhone SE 2020 battery?
Power off, remove the two pentalobe screws by the charging port, lift the screen from the bottom edge, disconnect the battery connector, pull the adhesive tabs, and fit the new 1821 mAh cell with fresh adhesive. Be gentle with the Touch ID cable near the home button.
Why is my iPhone SE 2020 battery draining fast?
The 1821 mAh cell is small and, on a six-year-old phone, well past its rated cycle life. If Maximum Capacity has fallen below 80 percent, fast drain and sudden shutdowns are typical wear signs that a replacement will fix.
What battery does the iPhone SE 2020 use?
A 3.82V, 1821 mAh lithium-ion cell for the A2275, A2296, A2297, and A2298 model numbers. It matches the iPhone 8 battery but is not the same part as the iPhone SE (2022).
Will I see a warning after installing an iPhone SE 2020 OEM battery?
Yes. A non-Apple battery triggers an "Unknown Part" message and marks Battery Health as unavailable. Charging and everyday performance are unaffected; you only lose the capacity percentage.
What if my iPhone SE 2020 is not charging?
Check the cable, charger, and charging port for lint first. If those are fine and the phone still won't charge or drains oddly, a worn or swollen battery is the likely culprit and should be replaced promptly.