Simply connect the Emergency DC Power Supply to the batteries and your charger can be repaired without time pressure.
The charger operates from 240V producing DC voltage equal to the float voltage of the switching/tripping batteries.
The 110V version is rated at 20A and the 48V version is rated at 50A. It is light, compact and ready to go. Simply connect the 240V supply and the output to the batteries to keep them in a charged state while the charger is being repaired.
Priced at $3,200 it is an invaluable tool of maintenance.