In Nigeria today, the rising cost of brand-new laptops has pushed many consumers towards fairly used or “second-hand” systems. While these pre-owned devices offer a more affordable option, many buyers end up with laptops that barely last three hours on battery, despite paying between ₦150,000 and ₦300,000 ($90-$190 at $1/₦1,600) or more. One of the most common mistakes buyers make is asking, “How strong is the battery?” without actually checking the battery health themselves. In re...