"I have a ZPRO 12V 100ah Lithium Battery and a ZPRO 12V 50ah Lithium Battery. I have been using ZPRO Lithium Batteries for almost two months and am very impressed with the batteries longevity of life. I have no problem getting over 15 hours on one charge from the 100ah for my 45lb thrust kayak motor. I use the 50ah to run two Gopro cameras, a cell phone, fish finder and a marine radio all at the same time with no issues. This is definitely a brand you can trust to provide you all the power you need to make your experience the best it can be. Oh, I didn't think twice about getting a ZPRO Lithium Battery charger as well."