https://i1.adis.ws/i/washford/960013?w=740&h=555&qlt=75&fmt=webp&v=1i put this battery on charge its a smart charger i think i put it on standard by mistake i charged it all night it didnt charge fully i have now put it on sealed i have had it 3 months i have smaller batteries definately sealed the ones that go on pure freedom trolleys is a sealed one or not