Adjusted and made into a 3 converter unit

Device has 3 tanks so now has 3 converters to match.
electricCharge on the converters set to Universal Storage levels.
(players can switch them on and off as needed)
conversionRate actually set to 8 this time (may change after play
testing).
Hydrogen to LiquidHydrogen shock values

Hydrogen to LiquidHydrogen conversion ratio changed according to the
density values in the Community Resource Pack