A teardown of Apple’s new $99 MagSafe Battery Pack from Charger Lab has given us our greatest look but inside the brand new accent, and revealed extra particulars about the way it works. For starters, it confirms current hypothesis that it makes use of a pair of battery cells wired in sequence like Apple’s earlier Sensible Battery circumstances, nevertheless it additionally provides us a have a look at the NFC circuitry and warmth shielding inside.
A dual-cell design is essential, as a result of it permits the voltage of the battery pack to be increased than a comparable single-cell design. Whereas every particular person cell is labelled as being 3.82 volts, the general voltage of the battery pack is 7.62 with them wired in sequence. It means the pack must be able to supplying extra energy than its 1,460mAh capability would counsel when put next straight with the battery capacities of the iPhone itself, with a complete energy output of 11.13Wh. AppleInsider has a very good writeup of the science when you’re after extra element.
Past the battery cells, the teardown provides us a very good have a look at how the battery pack dissipates warmth. In February, when Bloomberg first reported the existence of the pack, it famous that growth had been set again as a result of the iPhone’s software program saved considering the accent was overheating. It’s unclear if this downside was overcome with software program or {hardware} fixes, however clearly lots of effort has gone into maintaining the pack cool whereas permitting it to produce sufficient energy.
Not like the right-to-repair advocates over at iFixit, Charger Lab doesn’t provide a repairability rating on the finish of its teardowns. However the quantity of adhesive and hid tabs holding the battery pack collectively don’t make it look very person serviceable. We’ll have extra particulars on the way it performs in apply in our forthcoming evaluation.
