Tks. Edward,
the battery works only for 3 hrs. (and i say because i was monitoring the forklift during these time and the percent of charge was from 100 to 20%)
the tilt stall proof. i didn't performance.
the spec. grav. is in the range of 1.2 per cell and the volts are in the range of 2.35 to 2.15 per cell
the forklift are a NPR20 with the EV100 system with IGBT.
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