How to Connect a Solar Battery Charger

Solar battery chargers can recharge batteries at home and in remote locations. Typically the solar voltaic cell is already setup to output a predetermined charging voltage. In most cases, the solar battery charger manufacturer will have recommendations as to what type of battery can be plugged into the charging connections. Before any electrical connections are made, the solar battery charger should be installed into its permanent location for correct sun orientation. In all cases, the solar cell must have full exposure to direct sunlight for optimum results.

Things You'll Need

• Mounting hardware for solar charger
• Solar battery charger
• Battery
• Battery enclosure (optional)
• Electrical wiring for charger

Instructions

1. Install the solar charger according to the manufacturers specifications, using the provided hardware. Plan ahead when performing this installation as attention must be paid to wire routing and battery placement. Most solar battery chargers come with all mounting hardware and an electrical wiring harness.

2. Mount the battery into its location. This may entail a protective enclosure if the battery is installed in an inclement weather location. Excessive moisture may adversely affect and accelerate corrosion to the battery connections and terminal posts.

3. Route the charging wires from the solar battery charger to the battery in the most direct route. The shorter the wiring harness, the more efficient the charging system will be in keeping a full voltage to the battery.

4. Connect the red lead or clamp from the solar charger to the positive (+) terminal on the battery. Attach the black lead to the negative (-) terminal on the battery. Some charging units may use a basic spring clamp as the connector.

5. Work the clamp back and forth on the terminal battery post once the leads are attached. This action will ensure a good conductive path.

Tips & Warnings

• Follow all local electrical regulations when connecting or servicing any type of electrical equipment into a home's electrical system. Special rules may apply from power utilities for solar applications.

• Multiple solar chargers can be connected to output greater power and voltages. The manufacturers specifications must be consulted as certain electrical configurations may damage electrical equipment or the solar charging cell itself.

• Adding to the wire length of your solar battery charger may deter the effective charging rate of the solar voltaic cell.

References

• North Carolina Solar Center (PDF): Solar Activities for Students
• Solar Connecticut.com: Photovoltaic and How They Work