Monitor the charge status of Lead batteries in photo-voltaic systems

Accurate monitor the charge status of lead batteries in photo-voltaic systems (isolated populations in Mexico and Peru)

Foto AccionaMicroenergia conlogo

ACCIONA Microenergia foundation is dedicated to bring electricity to isolated and marginalized rural populations in Peru and Mexico using domestic photo-voltaic systems. These systems consist on a solar panel (80Wp), a sealed Lead battery (100 Ah) and a charge controller.

We are looking for a reliable, cheap and robust solution to accurately read the actual charge of a Lead battery, its operating regime during a minimum period of one month, and, if possible, at what point of its lifespan is at that moment.

The final objective is to incorporate such solution into these photo-voltaic systems to determine the actual battery operating regime, and to establish a strategy to drastically improve the Lead battery’s lifespan.

Help us improve the quality of the electricity service provided with domestic photo-voltaic systems for isolated rural families!

Evaluation criteria

Contributions will be assessed according to:

  • Lowest % error for battery charge reading
  • Minimum lifespan cost (manufacturing, adaptation and maintenance)
  • Minimum power consumption
  • Evidence on the robustness of the solution

The Prize

Acciona Microenergia foundation will give recognition for the winner and visibility through their web and social networks (Fb, Linkedin, Twitter).

The winner will keep the intellectual property and Acciona Microenergia foundation will have the right to use the solution.

Download full challenge description

Descargar la descripción del reto en español

This is a social challenge! We need your help to improve life of families living in areas where conventional power networks is not economically viable.


We're not around right now. But you can send us an email and we'll get back to you, asap.


Logo ministerio de economia y competitividad gobierno de españa logo ICEX logo feder seal of excellence  logo chile startuplogo innovo

©2019 Ennomotive Engineering Competitions - Legal Info ENNOMOTIVE SL en el marco del Programa de Iniciación a la Exportación ICEX Next, ha contado con el apoyo de ICEX y con la cofinanciación del fondo europeo FEDER. La finalidad de este apoyo es contribuir al desarrollo internacional de la empresa y de su entorno.


Ennomotive te ayudará a resolver tus desafíos tecnológicos. Si tienes alguna pregunta acerca de nuestra plataforma de innovación abierta, ponte en contacto con nosotros.

Log in with your credentials

Forgot your details?