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Bulle & Eureka Parts & Restorations
The place to come for all your Bulle and Eureka restoration parts.
EU005 - This battery is a direct replacement for the original 1.5v Flag Cell battery
which is no longer available. The size is exactly as the original being 160mm by
63mm, so it will fit the original battery compartment perfectly. The terminals are
also as original so there is no need to modify the wiring to suit modern battery
holders. The housing encloses a small regulator circuit which has a potentiometer
allowing the battery voltage to be set anywhere from 1.5v to 3.0v providing a stable
regulated supply to the clock. The maximum current is 250ma which is more than enough
for the Eureka clock. The unit is supplied with a holder for four replaceable “AA”
batteries (6v). The benefit of adding the regulator circuit to the battery means
that the clock rate can be adjusted with the potentiometer before fine tuning with
the balance spring rating star wheel. Comes with pot trimmer tool and battery holder
for 4 AA cells .
EU006 - comes without the regulator circuit but with a standard holder for replaceable
1.5v “D” cell battery’s.
1.5v with “D” cell holder
