[Ahdmeyer]

first off where are you located now? in a park, at your home ? if in a park i would ask at the front desk if there was someone who could help. it is not that hard but you need to be safe if you are going to do it, were gloves and safety glasses. make sure you do not hit any metal when removing the leads, go on utube it should have something there if not i found this, for a car but the same.
How to Remove a Car Battery

Safety First. Park the vehicle on a dry, flat surface and set the parking brake. ...
Disconnect Negative and Positive Cables. Start with the negative terminal and disconnect the negative battery cable. Look for a black cable and a minus (-) symbol.
Remove Battery and Restraint. Most cars feature a bar or a restraint of some sort to hold the battery in place. ...
hopefully you find a friend or neighbor to help that battery will be super heavy

wish i could help
good luck be safe