[Elecraft] [OT] Any good experience/recommendations with boost regulators with K3?

[Bob]

Hey,

Sort of off topic, but I was wondering if anyone has any positive
experience using boost regulators fed from a lead acid battery to drive
their K3?  Specifically I'm wondering which models might be relatively free
of emitted noise, are fairly efficient, and haven't messed up in a typical
RF environment.

I use solar panels to keep a flooded lead acid battery array charged, then
run my ham stuff from that - but the battery voltage does sag lower than
I'd like under transmit, dropping down to about 12.0 VDC, so I'd like to
get it closer to 13.8 under load by using a boost regulator.

Appreciate the bandwidth, and thanks in advance.

73, Bob, WB4SON