SPERAS i4 4 Slot Charger 21700
Authorised Dealer
The SPERAS i4 is a streamlined 4-slot smart battery charger for users who need simple, reliable charging across common flashlight battery sizes. It features clear LED indicator bars, 4 independent charging slots, automatic intelligent charging modes, and up to 2A fast charging through the dedicated fourth slot.
The i4 is designed as a simple, practical charger for rechargeable Li-ion, Ni-MH and Ni-Cd batteries. Each slot is controlled independently, so different compatible cells can be charged at the same time. The LED indicator bars show charging status without needing a complex display.
- ✓4 independent charging slots.
- ✓Clear LED indicator bars for charging status.
- ✓Dedicated fourth slot supports up to 2A fast charging.
- ✓Compatible with Li-ion, Ni-MH and Ni-Cd rechargeable batteries.
- ✓Supports common flashlight battery sizes including 21700, 26650, 18650, 16340 and 14500.
- ✓Automatic intelligent charging modes: CC, CV and dv/dt.
- ✓Over-discharged Li-ion battery activation function.
- ✓Automatic termination when charging is complete.
- ✓Reverse polarity protection.
- ✓Short circuit protection.
- ✓Cooling vents for heat dissipation.
| Specification | Detail |
|---|---|
| Model | SPERAS i4 |
| Product Type | Smart LED 4-slot battery charger |
| Charging Slots | 4 independent slots |
| Display Type | Clear LED indicator bars |
| USB Input | 5V / 2A |
| DC Output | DC 4.2V / 1A × 2, or 2A × 1, or 0.5A × 4 |
| Fast Charging | Up to 2A through the dedicated fourth slot |
| Charging Modes | Automatic CC, CV and dv/dt charging modes |
| Compatible Battery Chemistry | Rechargeable Li-ion, Ni-MH and Ni-Cd batteries |
| Common Compatible Battery Sizes | 21700, 26650, 18650, 16340, 14500 and other compatible rechargeable cells |
| Li-ion Battery Compatibility Listed on Charger | 10440, 14500, 14650, 16340, 17335, 17500, 17670, 18350, 18500, 18650, 18700, 20700, 21700, 22650, 25500, 26650 |
| Ni-MH / Ni-Cd Battery Compatibility Listed on Charger | AAAA, AAA, AA, A, SC and C rechargeable batteries |
| Low-Voltage Battery Activation | Yes, over-discharged Li-ion battery activation function |
| Charging Completion | Automatic termination when charging is complete |
| Reverse Polarity Protection | Yes |
| Short Circuit Protection | Yes |
| Heat Dissipation | Cooling vent design |
| Dimensions | 110mm length × 48.4mm width × 28.9mm height |
| Net Weight | 107.2g |
| Gross Weight | 146g |
| Recommended Use | Charging compatible rechargeable flashlight batteries at home, in a gear kit, travel kit, workshop or outdoor kit |
| Included Item | Quantity | Details |
|---|---|---|
| SPERAS i4 Battery Charger | 1 | Smart LED 4-slot rechargeable battery charger |
| Charging Cable | 1 | USB charging cable for powering the charger from a suitable USB power source |
| Carrying Pouch | 1 | Included pouch for storage or transport |
| User Manual | 1 | Operating and product information |
Jacobs Digital is a speciality on-line retailer, as well as a brick-and-mortar retail store, operating in the same Auckland, NZ location for over 40 years.
9 Mokoia Road
Birkenhead
Auckland 0626
New Zealand
+64 (9) 480-5903
