Motobatt Battery MT4R 12v 2.7Ah (20Hr) CCA:45A YTR4ABS L:114mm x H:86mm x W:49mm

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.