Universal Li-ION Battery Charger / 4 channels with overcharge auto-stop protection
Available in stock
| Quantity | Price per unit | You save |
|---|---|---|
| 1–2 pcs | 69,99 lei | — |
| 3–4 pcs | 66,49 lei | 5% (−3,50 lei/unit) |
| 5–10 pcs | 62,99 lei | 10% (−7,00 lei/unit) |
| 11+ pcs | 59,49 lei | 15% (−10,50 lei/unit) |
Smart charger for 4 Li-Ion batteries simultaneously
The Yonii Q4 universal charger is the professional solution for simultaneously charging up to 4 rechargeable Li-Ion, Ni-MH, or Ni-Cd batteries. With automatic overcharge protection and clear LED indicators for each channel, you save time and extend the lifespan of your batteries. Compatible with 26650, 21700, 18650, AA, and AAA formats.
What you get with this product
- Charge up to 4 batteries simultaneously, independently on each channel — each slot operates autonomously
- Automatic protection with auto-stop when the battery is full — prevents damage from overcharging
- Instant visual monitoring: red LED during charging, green upon completion — you know exactly when the batteries are ready to use
- Universal compatibility with Li-Ion 3.7V-4.2V, Ni-MH, and Ni-Cd AA/AAA — one charger for all types
- Selectable current 0.5A, 1A, or 2A per channel — fast or gentle charging, depending on the battery type
- Compact design 105x90x29mm with 80cm cable — takes up minimal space and connects easily anywhere
How it works and how to install it
Insert the batteries into the corresponding slots, observing the marked polarity. Each channel automatically detects the battery type and applies the optimal charging current. The red LED signals the active process, and when it turns green, the battery is fully charged, and the automatic protection stops the power supply. No complicated settings required — plug it in and it works immediately.
Frequently Asked Questions
Can I charge batteries of different capacities simultaneously?
Yes, each channel operates independently and self-adjusts according to the inserted battery, without affecting the other slots.
Does it automatically stop when the batteries are fully charged?
Yes, the automatic overcharge protection stops power to each individual channel when the battery reaches maximum capacity.
Does it also work with classic rechargeable AA/AAA batteries?
Yes, it is compatible with Ni-MH and Ni-Cd batteries in AA and AAA formats, in addition to Li-Ion 18650, 21700, and 26650.
Technical Specifications
| Model | Yonii Q4 |
| Number of channels | 4 independent |
| Compatible battery types | Li-Ion, Ni-MH, Ni-Cd |
| Supported formats | 26650, 21700, 18650, AA, AAA |
| Li-Ion output voltage | 3.7V - 4.2V |
| Selectable charging current | 0.5A / 1A / 2A per channel |
| Status indicator | Dual-color LED (red charging / green full) |
| Protections | Auto-stop for overcharge |
| Dimensions | 105 x 90 x 29 mm |
| Cable length | 80 cm |
Warranty and support
You benefit from a 24-month warranty according to Romanian legislation for manufacturing defects. The 30-day return policy allows the product to be returned if it does not meet expectations. Fast national courier delivery throughout Romania.
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