🔋 Boost Your Power Game with Smart, Portable Energy!
This 5-piece 18650 Lithium-ion battery kit includes a DC-DC step-up boost module capable of adjustable 3.7V to 5V/9V output at 1A, supporting simultaneous charging and discharging. Featuring dual input options (Type-C and solder joint), smart LED charge indicators, and a battery box, it’s ideal for DIY electronics, mobile power supplies, and portable device charging.
| Manufacturer | Youmile |
| Part number | JK-YM-648 |
| Item Weight | 50 g |
| Package Dimensions | 16.5 x 8.7 x 2.5 cm; 50 g |
| Item model number | JK-YM-648 |
| Batteries included? | No |
| Batteries Required? | No |
D**.
So far everything works (not true of some of the Youmile stuff).
Voltage adjustment work and the charging is also OK.
Trustpilot
3 weeks ago
1 week ago
