Acer Predator Helios 300 Battery Replacement

Introduction

Use this guide to replace the battery in an Acer Predator Helios 300 (i7 7700HQ) gaming laptop.

There are many reasons to replace a laptop battery, including the battery isn't holding enough charge, can't power on the laptop without plugging it in, the battery keeps losing its charge rapidly, etc. The reason why I am changing my battery today is because my laptop won't power on unless it's plugged in.

This guide will show you how to carefully remove the covers from the back of the laptop, remove the battery, and replace it with a new battery. I will also show how to do the steps in reverse to reassemble it back safely.

What you need

Step 1 Battery

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Before you start make sure the laptop is grounded.
Make sure the laptop is powered off.
If the laptop is not turned off, there is a risk of electric shock when replacing the battery.
Close the cover of the laptop, then turn the laptop upside down so the back is facing up.

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Step 2

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Remove all the screws from the back panel with a Phillips #0 screwdriver.
Remove the hard drive screw using a Phillips #0 screwdriver.
Use the panel tool to pop the storage hard disk open.

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Step 3

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Remove the four screws mounted near the storage hard disk using a Phillips #0 screwdriver.
Disconnect the cable connected to the storage hard disk.

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Step 4

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Use the panel tool to remove the back cover.
Slowly open the clips attached to the back cover, and store the cover safely.

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Step 5

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Remove the tape holding the battery wires in.
Remove the two screws mounted next to the battery using a Phillips #0 screwdriver.
Disconnect the battery cable from the motherboard slowly.
Remove the old battery.

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Step 6

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The battery is a Household Hazardous Waste, so be sure to follow your city's laws and dispose of them properly.
Connect the new battery connector to the motherboard and screw it back with the screwdriver.