charging for 3.7V Li-ion battery :10440~26650

Four Slots USB LCD Li-ion Charger - DL4

Dlyfull's 4-slot LCD USB charger features real-time battery level display, dual current output, and smart CC-CV charging. With clear visual status and automatic current adaptation, it makes multi-battery charging simple and visible:

1. 4-slot USB charger for 3.7V Li-ion batteries
2. Supports multiple battery sizes: 10340, 10440, 16340, 17335, 17500, 18650, 21700, 22650, 26650, and more
3. Independent charging channels – each slot charges and stops automatically when fully charged, with no mutual interference
4. Clear LCD display with blue backlight – shows Li-ion indication, real-time 4-level battery capacity indicator, and charging status for each slot at a glance
5. Smart charging: trickle current for low-voltage activation (1.9–2.8V), constant current (CC), and constant voltage (CV) for safe and reliable charging
6. 0V activation function (for batteries with protection board)
7. Intelligent input power adaptation – automatically adjusts charging current based on adapter capability; alerts when input power is too low (adaptive current <200mA ±50mA)
8. Dual output current options: 1000mA per channel for fast charging (2 slots) or 500mA per channel for simultaneous 4-slot charging
9. Comprehensive safety protections: overcharge protection, reverse-polarity protection, short-circuit protection, and bad battery detection (batteries <1.9V identified as faulty)
10. Type-C input for stable and convenient connection
11. Alarm indicators: flashing battery frame for reverse connection, short circuit, or faulty battery; flashing four-slot frames for low input power