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. Protect your home by charging your fire and burglar alarms with the Power Patrol Battery. It will last longer and provide a safer environment for you and your family.