Thanks to the EFOY fuel cell generator, a quiet and reliable power supply is available even when you're far away from the dock. In a far-off cove, in any weather, at any time of year – this marine fuel cell generator can keep your batteries fully charged – even at temperatures below freezing! The EFOY Comfort uses boat fuel cell technology to safely convert methanol into electrical power in conjunction with an integrated charge controller to make sure you never over charge. For more information on how this amazing clean fuel cell power generation works, read our Navigator on the subject – or to see our complete line of EFOY fuel cell technology products, click here.