Looking for an Proton GEN-2 battery? Then you've come to the right place. We have been selling batteries for Proton GEN-2 online since 2003 and will have the correct battery for your Car in stock, available for next day delivery. Use our Proton GEN-2 battery guide below to find a suggested battery for your Car and compare it to the battery fitted to your GEN-2. Need help? Simply contact us.