Motobatt Battery MB16AU 12v 21.7Ah (20Hr) CCA:250A YB16ALA2 L:207mm x H:164mm x W:72mm

Motobatt batteries are a sealed unit, so no need to mess with Electrolyte/Acid.
This battery comes with 2 years manufactures warranty. To make the warranty valid, you must register the warranty within 21 days of making the order.