MagSafe Battery Pack teardown confirms dual-cell design

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 latest hypothesis that it makes use of a pair of battery cells wired in sequence like Apple’s earlier Good Battery instances, nevertheless it additionally offers 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 ought to be able to supplying extra energy than its 1,460mAh capability would counsel compared instantly with the battery capacities of the iPhone itself, with a complete energy output of 11.13Wh. AppleInsider has an excellent writeup of the science in the event you’re after extra element.

Screenshot: Charger Lab

Past the battery cells, the teardown offers us an excellent have a look at how the battery pack dissipates warmth. In February, when Bloomberg first reported the existence of the pack, it famous that improvement had been set again as a result of the iPhone’s software program stored pondering 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 protecting 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 consumer serviceable. We’ll have extra particulars on the way it performs in apply in our forthcoming evaluate.