bombayduck
New member
OK, going through my 83 R100s, 70K miles that I recently purchased, one system at a time. Have a new battery, keep it on a bike charger when parked. When fully charged it goes to a float charge mode. Red light on dash goes out at just over idle. Checking the voltage at the battery running at 4k rpm was 13.25V so I suspected the voltage regulator might be bad. I did the test where I disconnected the connector to the voltage reg and jumped the 2 sockets in the connector and tested the battery voltage again at 4K rpm and found 14.5 to 15 volts so I go buy another regulator (Hella set at 14V) and install and now the voltage at 4K rpm is 13.5V on a fully charged battery. Does this mean that the battery can't absorb any more voltage so it's only up to 13.5V or should tested voltage be higher like 13.8 or 14 when at 4k rpm? BYW, I checked the Voltage at the alternator and it was 15V plus at 4K rpm Any electrical guru's out there know if I'm worrying for nothing, or is something wrong. Thanks in advance,
Brad
Brad