Sounds good, should get out AC pulses dependent on temperature or humidity.

Longer, higher gauge jumper cables? Using chassis ground that's further away from the battery?

How many Ah is a motorcycle battery compared to a car battery, that's probably a good indication.

136$ for a 30uf capacitor: digikey.com/en/products/detail/avx-corporation/RM045C306KAJ480/…

You'd better get a lot of mileage out of that cap if you buy it.

@VoltageSpike what application does such a cap have; induction heaters only?

@adamaero Motorcycle batteries are fairly cheap... I just replace 'em.

I have no idea, for a 100$ you could come up with a lot of different capacitor configurations that have the same ESR and capacitance. I'm just wondering how the price is 136$

@rdtsc I'm renting it

6-30 Ah for motorcycle battery

About 50 Ah for car battery

@VoltageSpike With that kind of price, there may be room for cottage industry which puts together custom stacks of MLCCs .

(Looked into it more. Doesn't need anything for the battery. )

@NickAlexeev I am sure those are hand assembled, but I still can't figure out the price. The other thing is you'd have to have an application where volume is at a premium, because you could always just use more PCB space and lay them out horizontally. I am also still wondering why anyone would need a stack of ceramics when paralleling multiple values of different caps can give you the same or better preformance.

@adamaero Jump it with the bigger battery, momentarily, to get the motor started. Then disconnect and let the bike recharge the battery on it's own.

(Right, nothing has gone bad since in had it. Just before I left the renter's place it wouldn't start)

@VoltageSpike Stacked MLCC are very handy in switch-mode power supplies when voltages and switching currents grow larger. Especially when the real estate is constrained. Even when real estate is abundant, more PCB area translates into more parasitic inductance.

Case in point. I've designed a power supply like that this past winter. 50W each channel, 4 channels, buck-boost.

Here's the photo: flickr.com/photos/46038819@N07/50941221426

The big ceramic capacitors are stacked. You can tell by their shadow. These were double-stack, I've paid $4 for each on Mouser.

@VoltageSpike If I were to build such stacks in hundreds or more, I can think of a more prolific method than soldering them by hand.

@NickAlexeev Nice, how did the assembly house handle the double stack request?

@VoltageSpike The assembly house didn't make any comments about it. The double stacked caps came on tape.