Hi Rick,
This TMHD 455/4 looks for me like the Fiamm battery type.
Fiamm is the th european battery manufacturer, pretty popular on south.
According to my tables, the battery has the following parameters:
48 V
500 Ah
750 Kg weight
83 mm cell width
4,9 kg acid per cell
Eventually look here:
www dot luke dot cz slash download slash TMHD dot pdf
Hope it helps
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