For a 6V battery, a solar panel with an output of around 6V to 12V is ideal. Ensure that the panel's wattage is sufficient to meet the charging needs of your battery based on its size and capacity.
HEAVY DUTY & MULTI-PURPOSE CHARGING - pure sine wave car inverter converts 12V DC to 120V AC power. Great for charging smartphones, laptop, game consoles, kindle, TV, DVD players, lights, iPad, CPAP oxygen machine, nebulizer, and other electronic devices.