Motobatt Battery MB3U 12v 4.0Ah (20Hr) CCA:50A YB3L-A, YB3L-B L:98mm x H:110mm x W:56mm

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.