On 06/08/2020 09:46, Bert Coules wrote:
Roger Hayter asked:

As a matter of interest, do power supplies like
their output switched on and off any better?

The 33V DC psus that charge disability stairlift batteries are
permanently powered, but after each operation of the lift they are
abruptly connected to the DC-DC converter in the chair that charges the
battery. Weirdly, although the supplied psus seem to be mostly rated at
1.2A, the initial current draw is usually about 1.85A.

Bill