Motobatt Battery MB2.5U 12v 2.7Ah (20Hr) CCA:35A YB2.5L-C, YB2.5-C-1, YB2.5-C-2 L:80mm x H:105mm x W:70mm

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.