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Шаг 18
At last we carve out the (mightily adhered) 5-cell battery. Well, five-ish cells. With a nominal voltage of 11.41 V, the two outer pairs are wired in parallel and together have the same charge capacity as the center one, to yield three ~3.8 V cells in series.
  • At last we carve out the (mightily adhered) 5-cell battery.

  • Well, five-ish cells. With a nominal voltage of 11.41 V, the two outer pairs are wired in parallel and together have the same charge capacity as the center one, to yield three ~3.8 V cells in series.

  • You'd better hope your "Pro" career is short; this battery replacement is a doozy.

  • The battery board hosts a TI BQ20Z451 (a possible variant of the BQ20Z45-R1 line, seen in MacBook Pros forever)

  • Listing a 49.2 Wh capacity, this battery seems a little piddly compared to the Function Key edition's 54.5 Wh—especially considering it's driving a lot more functionality (pun intended).

  • Dotting our i's, we slap these batteries on a scale: the Function Key-equipped MacBook Pro battery weighed in at 235 grams, while this battery weighs just 197 grams.

  • The weight disparity probably helps account for a lighter Touch Bar edition, but the battery seems to rate more watt-hours than the decrease in weight would suggest.

终于,我们取出(被强力粘附)五节电池。

好吧,差不多五节吧!左右两个电池对并联,与中间的电池具有相同的充电容量,三个3.8V的电池串联产生11.41V 的标称电压。

你最好希望你的“Pro”生命很短;因为更换电池就像是个谎言。

电池主板上的芯片为 TI BQ20Z451(可能是在MacBook Pro 中经常看到的 BQ20Z45-R1 的变种)

标称容量49.2 Wh ,相比功能键版本的54.5 Wh,这个电池似乎有点小—特别是考虑到它要驱动更多的功能。

我们依次称取这些电池的重量:配备功能键的MacBook Pro 电池重235克,而这个电池仅重197克。

重量的差异解释了Touch Bar 版本容量小的原因,但相比减轻的重量,减小电池容量比预期的多。

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