Belive me..A single batt`s connected to atty it`s not like booster, have drop down voltage on that mosfet, with atty connected. To minimize this dropout voltage need to use a mosfet with lower VGSthreshold, in that way the mosfet will be totaly open in load.
you may use from mosfet with VGSthreshold = 0.4 ..1V for mod 3.7V batt`s- switch -atty.this IRLU3114ZPBF it`s good only to pull down a on/off pin from an stepdown IC
regulated dual batt`s series connected it`s the best.Huge power, long life of batt`s between recharging..but dimension is a little higher of this kind of mod, compared with booster.
i don`t agree with that. only problem is user..want to have hard sensation but instead take some burned taste...VV it`s good but you may use correctly.I say in other posts..must find the "sweet spot" wright voltage at a fixed resistance.
i just finish one like the first four pictures.It`s VV works with 2x16340 only,varivolt from 0 to 8.4V, sensitive switch.Have revers polarity protection, short circuit protection, thermal protection
I sell this for 140$ without batt`s, priority shipped included (with tracking...
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