[QUOTE =“Topwater Elvis,帖子:21584873,成员:113431”]说什么?[/ QUOTE]
How long can we charge the e-cigarette battery once?
There's a chance I'm missing the meaning of your question.
I assume you're talking about 18350 through 21700 size cells?
From the low voltage cut off of most regulated power
devices (2.8v - 3.3ish v) to fully charged (4.2v) somewhere around 1 - 4 hours depending on charge rate & depth of discharge.
You should be using a decent charger that stops charging and gives you an indication when the cell(s) are fully charged.
Above also assumes you are using quality name brand cells with a sufficient CDR for your application bought from a reputable vendor/dealer.