US$ 21.14
usb c charging 3 18650 lipo Charger 3.7V with DC-DC Boost 4.5-24V - Type U Optimal for various lighting devices Multi-Cell 2S 3S 4S Type-C
Description
Or you can use a dedicated 1S battery charger which I personally find more effective

Pediatric Clinics Of North America, [S.L.] 65(2):179208

Ancak aldktan sonra 3-6 ay iinde tketilmesi tavsiye edilir

Coria-Avila et al., 2008

[DOI] [PMC free article] [PubMed] [Google Scholar] 459
