Motobatt Battery MB5U 12v 7.4Ah (20Hr) CCA:90A YB5LB, 12N53B L:120mm x H:130mm x W:60mm

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.