A hoisting device and method of making the same including a hoist body having an inwardly extending post pocket that includes an inwardly facing body groove extending about a post pocket axis. In some embodiments, the method can use an indirect competitive immunochromatagraphic test strip. The litter system may be quickly assembled under adverse conditions and may be particularly beneficial in transporting individuals who are injured, disabled andor incapable of movement under combat andor emergency conditions. By employing currentvoltage sense amplifiers to monitor the battery pack voltage, the battery cell voltage, and a battery charging current, the effect of cable resistance tofrom the battery pack can be reduced.