Hello, I'd like to know how many lithium batteries are there inside the MacBook Pro (15-inch, 2019)

Apple's batteries in the Apple laptops fall well within the limits imposed for shipment. I have forgotten the specific rules (am actually due to renew my training for the 2022 rules), but this article appears to present things well:

https://www.smithcorona.com/blog/2021-guide-to-lithium-battery-labels/

I do know that you will need the "UN3481" label since the Lithium-ion battery in an Apple laptop is "contained within the laptop". The Apple batteries are also below the 100Wh limit. Here is the Apple article with the technical specifications for your laptop which states the battery is:

From:

MacBook Pro (15-inch, 2019) - Technical Specifications

Battery and Power2

Built-in 83.6-watt-hour lithium-polymer battery

You do need to make sure that the battery charge level is drained to slightly less than 30% charge. Do not drain the battery to below 20% or the battery may drain to 0% before it reaches the destination which could damage the battery.

Edit: modified the link to the laptop's Technical specifications.

mjl0630 wrote:

I wanted to send over the Post Mail my laptop overseas but the rule is if it's a built in battery, the number of batteries should not exceed 2.

Thank you in advance!

Battery pack— is one unit.

you can do a google search for more info

Apple ships Macs all over the world...approx 57,000 a day.

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