Motobatt Battery MBT4BB 12v 2.7Ah (20Hr) CCA:40A YT4BBS L:113mm x H:87mm x W:38mm

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.