Thanks to the fact that it arrived on time I didn't resist and put together my battery works quite well I thought that to charge it was going to last enough but in reality fast charging is functional for all kinds of projects where one of these is needed, I have it with 13 batteries 18650 in parallel, I doubt that it will not last the charge to charge the cell phone several times

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Плата зарядки 1 шт. с двумя USB-портами 5V 2.4A для литиевой батареи 18650 для Power Bank с защитой от перезаряда, недозаряда и короткого замыкания - DIY мобильное зарядное устройство

1pc Dual USB 5V 2.4A Charging Board for 18650 Lithium Battery Power Bank with Overcharge, Overdischarge, and Short Circuit Protection - DIY Mobile Charger

HQGOIC

Купить Плата зарядки 1 шт. с двумя USB-портами 5V 2.4A для литиевой батареи 18650 для Power Bank с защитой от перезаряда, недозаряда и короткого замыкания - DIY мобильное зарядное устройство