To alter or readjust; tinker with: sought to raise output this year by rejiggering its agricultural policies. [first form 1940s+, second 1960+; fr mid-1800s jigger, ''shake or jerk rapidly,'' related to jig as a rapid movement, dance, etc, hence ''rearrange or readjust by shaking,'' semantically similar to shake up]
AGM Batteries. Absorbent glass mat (AGM) is a class of lead-acid deep cycle battery in which the electrolyte is absorbed into a fiberglass mat. The plates in an AGM battery may be flat like wet cell lead-acid battery, or they may be wound in a tight spiral.
Deep-Cycle AGM. 1  Trojanâs deep-cycle Absorbed Glass Mat (AGM) maintenance-free batteries feature a number of design elements to provide optimum performance. Robust plates and separators extend the life-cycle of Trojanâs deep-cycle AGM batteries while a computer-generated grid design is optimized for high-power density.