Motobatt Lithium Battery MPLXHK-P 12v 2.5AH CA:200A HY85S HJ12L L107mm x H:85mm x W:49mm Honda CRF250R 18-20, CRF450R 18-20 (Also Has 5mm Side Spacer)

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.