Since my battery voltage never gets above the cutoff point for the Zivan charger bulk phase, I made a special charging cord with a timer built into it. If I leave the Zivan in low-current mode, I only pull 12 amps, which is less than the 15 amp rating of the timer.
Since I know how many amp-hours I pull from the batteries during my commute, I can generally pick a good timer setting to get the batteries close to full without "boiling" them too much. I think this will work out fine until I replace the batteries or sell the car.
Not ironically, I've been having problems with the charger on the Civic-EV not getting out of bulk-charge mode too, so I built a second timer-cord for that car too.