My portable battery pack is good for about 30 jumps. Had a battery go bad on my bear hunt in Sept while truck was at end of a trail. Jumped it and got out with no issues. Had to jump it at camp and then next morning to get to town to buy a new battery.
Just hunted Kansas and had to different young families on Thanksgiving trips need jumps parked at gas stations. No big deal with the battery jumper. Blue lights still indicate about 75% charge remaining. It'll get charged when it goes below 50% is my plan.
Needing to buy 2 for my kids.
