Abstract: A mobile fuel filter for removing sulfur-containing compounds from a diesel fuel is provided. The mobile fuel filter comprises: a filter median comprising an absorbent for removing sulfur-containing compounds from the diesel fuel, the filter median being in fluid communication with a storage device, the storage device having a holding capacity greater than 1000 gallons and being configured for storing the diesel fuel, the absorbent being configured to remove sulfur containing compounds from the diesel fuel to produce filtered diesel fuel having less than 15 ppm of sulfur containing compounds, the absorbent comprises an inorganic oxide having a surface acidity characterized by a pKa of at least ?3.

Abstract: A circuit (M) to monitor and protect individual cells (12-1 . . . 12-n) of a multi-cell battery (10) from over-charge and acquire data to be used to determine various characteristics of the cell state-of-health is connected to each individual cell (12) of a multi-cell battery as the battery is being charged. The circuit includes a portion (Q1-R5) to bypass charging current from the cell, this portion being variably pre-settable to bypass current above a desired high voltage (V-By) limit for the cell. As the battery is being charged, the bypass circuit will shunt current around a cell when the preset high voltage level is exceeded, thus preventing any damage to the cell. The circuit (Q2) can be operated to produce a pulse of current and the change in voltage of the monitored cell in response to the change in current, dV/dI, can be used to determine the cell internal resistance. The cell polarization resistance also can be determined.