Description
The ISDT K4 is a heavy-duty, dual-channel smart balance charger engineered to deliver extreme power and versatility for demanding hobbyists and drone pilots. Featuring dual AC/DC input flexibility, it operates on standard AC mains (100–240V) up to 400W total, or via a high-capacity DC power source (10–30V) to unleash a massive 600W of dedicated charging power per channel (1200W total) at up to 20A per slot.
Housed in a rugged, lightweight aluminum alloy shell with an advanced air duct cooling design, the K4 supports a wide array of battery chemistries including 1–8S LiPo, Li-ion, LiFe, LiHV, 1–16S NiMH/Cd, and 1–12S Lead-Acid (Pb) packs. Equipped with built-in Bluetooth wireless connectivity for remote mobile operation via the ISD Link app, data profile storage, and multi-layer safety alarms, the K4 provides professional-grade power management for high-capacity battery fleets.
Note: Product images are for reference only; actual appearance, packaging, or included power cord plug types may vary slightly based on manufacturing batches.
Key Features
- Massive Dual-Channel Power: Delivers up to 600W per channel (1200W total) on DC power, or 400W total when running on AC mains input.
- Flexible AC/DC Inputs: Accepts 100–240V AC wall power for indoor workshop use or 10–30V DC field power for trackside operations.
- Wide Chemistry Support: Fully compatible with 1–8S LiPo/Li-ion/LiFe/LiHV packs, 1–16S NiMH/Cd cells, and 1–12S Lead-Acid (Pb) batteries.
- Bluetooth Mobile Connectivity: Integrated Bluetooth support allows real-time telemetry monitoring and remote parameter adjustments via the ISD Link smartphone app.
- High-Precision Balance Circuit: Features up to 1.5A/cell balance current to ensure individual cells reach peak parity quickly and safely.
- Robust Aluminum Chassis: Lightweight, durable aluminum alloy housing paired with an optimized air duct cooling structure ensures reliable thermal management under heavy loads.
Benefits
- Rapid Fleet Turnaround: High-amperage 20A output and massive wattage effortlessly handle large-capacity multi-rotor and car packs in record time.
- Wireless Remote Monitoring: Keep an eye on long charge cycles and cell statistics directly from your phone without standing over the workbench.
- Versatile Power Options: Easily transition between indoor AC wall outlets and mobile DC field power sources without losing performance.
- Smart Profile Storage: Built-in memory stores frequent charging configurations for quick, repeatable setup between sessions.
- Comprehensive Safety Protection: Integrated hardware alarms safeguard against abnormal voltages, incorrect cell counts, and thermal runaways.
Applications
- Industrial & Agricultural Drone Fleets: High-power dual-port charging station for heavy-lift 6S–8S flight battery packs.
- RC Car & Truck Racing: Heavy-duty pit charger capable of rapidly cycling and balancing large 2S–4S racing lithium packs.
- RC Aircraft & Helicopter Field Kits: Reliable multi-chemistry charging hub for large-scale fixed-wing and turbine power setups.
- Workshop Bench Setup: Professional-grade desktop unit for routine battery storage prep, high-current charging, and maintenance.
- Mobile Field Operations: Robust DC-compatible charger easily powered from high-capacity portable power stations or vehicle battery banks.
Package Includes
- 1 x ISDT K4 Dual-Channel AC/DC Smart Charger
- 1 x AC Input Power Cable
- 1 x Instruction Manual / Quick Guide
Specifications
| Parameter | Specification |
|---|---|
| Item Type | Dual-Channel AC/DC Smart Balance Charger & Discharger |
| Manufacturer / Brand | ISDT |
| Model Name | K4 |
| AC Input Voltage / Power | 100 – 240V AC | Charging Power: 400W Total |
| DC Input Voltage / Power | 10.0 – 30.0V DC | Charging Power: 600W × 2 Channels (1200W Max) |
| DC Output Voltage Range | 1.0 – 30.0V DC |
| Max Input Current | 35.0 A DC |
| Charge Current Range | 0.2 – 20.0 A per channel |
| Discharge Current Range | 0.2 – 3.0 A per channel |
| Discharging Power | 30W per channel (60W total) |
| Balance Current | 1.5 A per cell Max |
| Supported Battery Types & Cell Counts | LiPo / Li-ion / LiFe / LiHV: 1 – 8 Cells NiMH / NiCd: 1 – 16 Cells Pb (Lead-Acid): 1 – 12S (2 – 24V) |
| Wireless Connectivity | Bluetooth Support for ISD Link Mobile App |
| Cooling & Construction | Optimized Air Duct Cooling / Aluminum Alloy Shell |
| Operating / Storage Temperature | Operating: 0°C ~ 40°C | Storage: -20°C ~ 60°C |
| Physical Dimensions | Compact desktop enclosure (~260 × 230 × 90 mm class) |
| Net Weight / Shipping Weight | ~1.4 kg / 1.67 kg |





























