This battery is functional and safe. It is valve regulated which makes it nearly impossible to spill, and with its tightly sealed construction, it can be operated from any angle. With its hard plastic case, it can take severe amounts of high impact and not do any damage. It even has a low pressure safety release valve. This battery will last a long time both physically and chemically. Power up your wheelchairs, and electric scooters with this battery. Be able to move around easier with the touch of a button, and not have to worry about the battery dying on you, because they are built to last.