How to replace the battery in a Lenovo Legion laptop

🧰 Difficulty: ★★★☆☆ (Doable—if you’ve opened laptops before)

⏱ Time involved: 30–60 minutes

⚠️ Risk level: Medium to high. One wrong move can damage the motherboard.

💡 Pro insight: Legion laptops are tightly built. Battery cables are delicate, and swollen batteries can turn a simple swap into a bigger repair.

⚙️ Skip the teardown—visit your nearest uBreakiFix® by Asurion store for expert Lenovo laptop battery replacement.

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If your Lenovo Legion® only works when it’s plugged in—or the battery drops from 40% to 5% in minutes—you’re probably dealing with a worn-out battery. Gaming laptops push their batteries hard, and over time they just don’t hold up the way they used to.

Asurion Experts replace laptop batteries like this every day. We’ve seen smooth, straightforward swaps—and we’ve also seen tiny slips turn into motherboard repairs. If you decide to go it alone, here’s what to know before opening it up.

Make sure it’s actually the battery

Before grabbing a screwdriver, confirm it isn’t your charger or charging port.

Common battery failure signs include:

• The laptop only powers on while plugged in
• Sudden percentage drops
• Random shutdowns
• “Plugged in, not charging” message
• Battery life dramatically shorter than before

If it charges normally but drains unusually fast, the internal cells are likely worn out.

Before you open your Lenovo Legion

It's important that you know that opening your laptop may void your manufacturer warranty, so check your coverage first. Also—if the battery looks swollen, stop immediately. Swollen lithium-ion batteries can be unsafe to handle and should be replaced professionally.

If everything looks normal and you’re comfortable proceeding, gather your tools.

What you’ll need

• A replacement battery made specifically for your Legion model
• Small Phillips screwdriver
• Plastic pry tool (not metal)
• Anti-static wrist strap (recommended)
• A clean, well-lit workspace

Make sure the battery matches your exact model number. Legion internal layouts vary. If any of this doesn't sound fun to you or you don't have the appropriate tools, now is a great time to stop and reach out to a computer repair expert.

How to replace the battery in a Lenovo Legion laptop

1. Shut the laptop down completely.
2. Unplug the charger and all accessories.
3. Flip it over on a soft surface.
4. Remove all bottom screws.
5. Carefully pry off the bottom panel using a plastic tool.

Once inside:

1. Locate the battery.
2. Gently disconnect the battery cable from the motherboard.
3. Remove the screws securing the battery.
4. Lift the battery out slowly.

Installing the new battery:

1. Place the replacement battery into position.
2. Secure it with screws.
3. Reconnect the battery cable firmly.
4. Reattach the bottom panel and screws.

After reassembly:

1. Plug in the charger.
2. Power the laptop on.
3. Let it charge fully before unplugging.

If it doesn’t power on, reopen it and double-check that the battery connector is fully seated.

When it’s smarter to bring it in

If you’re unsure about any of the steps—or you feel resistance when disconnecting the battery cable—that’s your cue to stop. Lenovo Legion systems are tightly packed, and it doesn’t take much pressure to damage a connector or short the board, which can turn a simple battery swap into a much more expensive repair. In that case, it’s smarter to bring it to your nearest uBreakiFix® by Asurion store and let a pro handle it safely.