Solar Panel Repair Guide

This guide documents field techniques for repairing and repurposing damaged solar panels, developed during the Caribbean hurricane response. It covers how to select salvageable panels, test panel circuitry and polarity using a multimeter, and seal cracked or debris-covered panel surfaces with clear tape to restore safe use.

The guide also explains how to charge a battery from solar panels both with and without a dedicated solar charge controller. In the absence of a charge controller, which was often unavailable during the crisis response, it describes manually monitoring panel and battery voltage, and using opaque black plastic bags to partially block panel cells and prevent overcharging when panel output voltage is too high. It concludes with basic guidance for connecting a charged battery to an inverter to build a functional power hub.

Note: This guide involves working with unregulated voltage and battery charging without a manufacturer-standard charge controller. It should be treated as an emergency field technique rather than best practice, and used with appropriate caution around battery safety (overcharging, ventilation, short-circuit risk).

Levels are identified based on this reference: Field Ready Readiness

Levels

About the manuals

Field Ready develops manuals to support both the fabrication and safe use of its products. A maker manual provides step-by-step instructions for replicating the design, including materials, tools, and assembly guidance, so that makers in different locations can build the product accurately and consistently. A user manual, where applicable, explains how to properly set up, use, and maintain the product once it is built, helping ensure it performs safely and as intended for the end user. Together, these manuals make the design accessible to both fabricators and the people who ultimately rely on the product.