portable inductor? has anybody tried a portable power supply?

[XoGnosis]

does you meter take time into account and report in Ah rather than A? or do you have to time the hits yourself and do the math? Any decent molicel can easily handle 10A, the question is if a heatup takes say 5 seconds with the inductor, then how many amp hours would cover 50 heatups or whatever the design goal is?

For example, here is the info on the molicel p30b:

https://www.molicel.com/inr-18650-p30b/

it can handle a 36A discharge and contains 3.0Ah (10.8Wh). The issue is not if the cell can handle 10A, the question is how many 3 Ah cells will you need to power the number of hits in your use case? since the serial / parallel cell arrangement is already defined for you in the ryobi 40v pack design, the question actually becomes how many hits will you get out of a ryobi 40v pack?

Its also worth considering that lithium ion batteries do not do well when left at very low voltages / empty. Lets assume that each 40V pack will get you one day of usage. If the use case is to go camping for a week i would personally rather find a way to charge the pack on the road rather than leave multiple packs sitting empty for days.

the inline meter does indeed track both power used and the time over which it was used. as I said I was mostly just goofing around and looking at peaks.

I haven't used the inductor since last night's goofing off session, but it currently shows having provided power for 1m 41s of active heating, and shows 0.24Ah and 5.43Wh . those values accrued over 2 "real" uses and 2 "what's the highest demand I would EVER need" heats. obviously more data collection is needed (including factoring losses from the buck convertor), but 4 heat ups consumes less than 1/4 Ah so something in the neighborhood of 16 cycles from 1Ah.

60+ heat cycles from a 4Ah pack feels like it compares favorably to toting enough 18650s to power my wand through a similar volume and the inductor is much more flexible.

truth be told, I don't camp enough for this to be a camping solution for me, regardless of bulk/size/practicality - I'm trying it just because I can and to have options.