When we met our contact from MNT in the coffee shop, he was quietly working away on his laptop. Jet black ... the bare mainboard to individual 18650 LiFePO4 battery cells in a tidy row.

The 18650 cell has become a ubiquitous standard ... not only the specifications and manufacturing details of your laptop battery pack, but also to check on the health of the battery.

Aside from that, the open hardware laptop also received a custom battery pack that uses an 18650-cells based LiFePo4 battery for better case integration (but remains easily replaceable), while you ...