Sealed maintenance-free motorcycle batteries are now supplied pre-filled. Our permanently sealed maintenance-free motorcycle battery never needs refilling; however, it still needs periodic charging. Ideal for motorcycles, scooters, ATVs, riding mowers, and personal watercraft. The acid is completely absorbed into Glass Mat Separators which are sandwiched between the lead plates, giving a sealed and maintenance-free AGM battery. Can be used to replace the following: YTX9-BS, CT9-BS, FTX9-BS, CTX9-BS, GTX9-BS, YT12A-BS, GT9-BS, ETX9-BS, KTX9-BS, 6E9, ATH9-12B, B9-12b, Varta 508 012 008, and others. This is a 'FIXED ELECTROLYTE, SEALED MAINTENANCE FREE' Battery. All ULTRAMAX TT series "Liquifix" batteries use AGM technology which consists of an Absorbent Glass-fibre Matting between the lead plates inside the battery. This material absorbs and stabilizes the electrolyte so the battery can be mounted in any orientation and also allows higher discharge rates without causing internal damage to the battery. AGM batteries are often referred to as Gel batteries because the electrolyte appears to be solid, but they are also sometimes known as Dry or Sealed batteries. NO TOP-UP IS REQUIRED IT IS MANTENANCE FREE - FOREVER. Dimensions: 150mm Long (along front) x 87mm Wide x 105mm High. 12Volt, 8AH. Positive terminal on LEFT (with terminal nearest you). Vibration, spill, and leak-proof due to robust build and fixed gel electrolyte. Low self-discharging rate means it can withstand longer periods out of use and has a longer life expectancy. 100% maintenance-free. No topping up required. Fit it and forget it.