DFRobot 10W Outdoor Solar Power Kit with 12V/5V Outputs

Jargon buster

Plain-language definitions for the technical terms used above.

5G

5G is the fifth-generation mobile network standard, offering higher-speed, lower-latency wireless data than earlier 4G/LTE networks. 5G modems can move large amounts of data over cellular networks but may draw significant current and need a suitable aerial and reliable power.

cell balancing

A charging feature that keeps multiple battery cells at similar voltages. This matters in battery packs because unbalanced cells can reduce runtime, shorten battery life, or create safety problems.

DC

DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.

IoT

Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.

monocrystalline solar panel

A solar panel made from single-crystal silicon cells, commonly used where good efficiency is needed in a compact panel. This matters when estimating how much sunlight and panel area are needed to keep batteries charged.

NB-IoT

NB-IoT is a low-power cellular network standard designed for sending small amounts of data from remote devices on long battery life. When a product lists NB-IoT, it can report readings from places without Wi-Fi or Ethernet, provided there is suitable cellular coverage and a data plan.

open-circuit voltage

Open-circuit voltage (Voc) is the voltage measured across a source's terminals when nothing is connected to draw current; for a solar panel it is the maximum voltage in full sun with no load. It matters because any connected device, such as a charge controller or load, must be rated to handle this no-load maximum.

over-discharge prevention

Over-discharge prevention is a battery protection feature that disconnects or limits the load when the battery voltage falls too low. It matters for any battery-powered device, particularly lithium cells, because draining a battery too far can permanently damage it.

overcharge protection

Overcharge protection is a battery safety feature that stops charging once the cells reach their safe maximum voltage. It matters for any rechargeable battery or charger, because leaving cells on charge past full can shorten battery life or create a safety hazard, especially with lithium chemistries.

PV input voltage

PV stands for photovoltaic, meaning the voltage coming from a solar panel. Matching the panel’s PV voltage range to the controller is important so the charger can operate safely and efficiently.

short-circuit current

Short-circuit current (Isc) is the maximum current a source can deliver when its output terminals are connected directly together; for a solar panel it is the current produced in full sun with the output shorted. This rating helps in choosing safe wiring, fuses or other protection, and a compatible charge controller.

USB Type-C

USB Type-C is a small, reversible USB connector used for power, data and sometimes video on many modern devices. The connector itself does not guarantee a particular speed or voltage, so check the supported USB version, data rate and whether it carries more than 5V via USB Power Delivery.