The K7300 Universal Battery Charger/Discharger Kit is a versatile battery management solution designed for charging, discharging, and maintaining a wide range of NiCd (Nickel-Cadmium) and NiMH (Nickel-Metal Hydride) rechargeable batteries. Ideal for electronics hobbyists, technicians, educational laboratories, and repair workshops, this kit provides both rapid and standard charging modes while helping maximise battery lifespan through automatic discharge before charging.
Unlike many conventional battery chargers designed for only a single battery type or size, the K7300 supports numerous battery pack voltages, making it suitable for powering RC models, cordless equipment, portable electronics, emergency lighting, test equipment, and many other rechargeable devices.
The charger offers selectable charging currents ranging from 15mA to 750mA, allowing users to match the charging current to the battery capacity for safe and efficient charging. Depending on the selected mode, batteries can be fully charged in approximately 52 minutes using the fast-charge function or over approximately 14 hours using the standard charging mode.
To help maintain battery performance and reduce the memory effect associated with NiCd cells, the K7300 incorporates an automatic discharge and recharge cycle. The charger first safely discharges the battery before initiating the charging process, helping restore battery capacity and extend overall service life. This function also benefits many NiMH batteries by ensuring a complete charging cycle.
The charger is compatible with a broad range of battery voltages including 1.2V, 2.4V, 3.6V, 4.8V, 6V, 7.2V, 8.4V, and 9.6V, making it suitable for both individual rechargeable cells and multi-cell battery packs used in countless electronic applications.
Built on a compact 85 × 78mm PCB, the unit can be easily installed into a custom enclosure for bench-top or portable use. Supplied as a self-assembly kit, the VELLEMAN K7300 provides an excellent electronics project while delivering a practical charger suitable for everyday use.
Whether you're maintaining rechargeable battery packs, restoring older NiCd batteries, charging hobby electronics, or building a dedicated battery charging station, the K7300 offers reliable, flexible, and efficient battery management.
Features
Universal charger for NiCd and NiMH rechargeable batteries
Automatic battery discharge before charging
Fast charging or standard charging modes
Selectable charging current for different battery capacities
Supports multiple battery voltages
Helps extend battery service life
Suitable for single cells and battery packs
Compact PCB design
Reliable battery maintenance solution
Easy self-assembly
Specifications
Product Code: VELLEMAN K7300
Product Name: Universal Battery Charger/Discharger Kit
Function Group: Power Supplies & Chargers
Compatible Battery Types: NiCd (Nickel-Cadmium), NiMH (Nickel-Metal Hydride)
Charging Current: Selectable from 15mA to 750mA
Supported Battery Voltages: 1.2V, 2.4V, 3.6V, 4.8V, 6V, 7.2V, 8.4V, and 9.6V
Fast Charge Time: Approximately 52 minutes
Standard Charge Time: Approximately 14 hours
Charging Cycle: Automatic discharge followed by charging
PCB Dimensions: 85 × 78mm (3.4 × 3.1")
Typical Applications: Charging rechargeable battery packs, RC models, portable electronic devices, cordless equipment, educational laboratories, electronics workshops, battery maintenance, DIY electronics, repair benches, and rechargeable power systems.
What's in the box
1 x Battery Charger Discharger Kit
