Giantz Lawn Mower 40V Battery Only Cordless 20V x2 Fits LI37Experience the true power of Giantz 20V rechargeable lithium batteries. We sourced the latest in technology to create lithium deep cycle batteries that are non spillable and high performance. The batteries are designed to fit Giantz lawnmowers and deliver powerful performance, so you can mow the lawn cordlessly and with total ease. The batteries are maintenance free, fast to charge and can deep cycle for longer, more consistent power. They can be