Projecta are excited to announce the release of their brand new Monocrystalline Battery Maintainer Solar Panels. The new pair of battery maintenance solar panels add yet another line to the extensive family of Projecta solar products. Monocrystalline is proven to be the most efficient material used for converting the suns light into energy, meaning these Battery Maintainer Solar Panels are a reliable, user-friendly way to maintain your vehicles battery health.