HP Pavilion 15 Maintenance And Service Manual page 53

3. Slide the battery (3) from the middle to remove it from the computer.
To insert the battery:
CAUTION: Do not slant the battery as you insert it. Slide the battery in straight.
1. Holding the battery in the middle, slide the battery (1) straight into the computer until the battery
release latch locks into place.
2. Reset the battery lock (1) to the locked position.
Component replacement procedures
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