If it's a Varley Red Top 35 - listed for Morgan, the spec sheet shows 530 Amps at 0 degreesC and 410 Amps at -18 degreesC.

http://varleyredtop.com/wp-content/uploads/2017/06/VRT_2015_Iss8.pdf


DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4