Quote: "That shrunk the battery size by half." Nit-pick. To "shrink by half" would have the effect of doubling the size. Maybe he meant "to half the original",

Quote: "That shrunk the battery size by half." Nit-pick. To "shrink by half" would have the effect of doubling the size. Maybe he meant "to half the original", but surely not "by half." This reminds me of the commonly heard "torn in half" when either "torn into halves" or "torn in two" is what's meant.