Realized we needed a compact, capable jump starter when we returned to the airport parking lot after a prolonged trip, to discover our hybrid car would not start. Although we had 30 plus miles of charge available in the cars onboard battery, the 12v primary battery was too low to initialize the computer system (arggggh!) so we could not start the car. The first thing we did the next day was to research potential solutions in case an errant dome light or other uh-oh occurs on our next trip and we are left stranded again.
The Topvision 2500A seemed more than adequate, especially since our hybrid only needed minimal amperage to initiate the electronic circuit. Fast forward two days to our daughter's car (traditional ICE) with a stone dead battery and we were able to fire it up and still have 99% charge left on the unit.
In summation, it is compact, capable, and we love it