Stanley J309 300 Amp – the Best Jump Starter
The Stanley J309 300 Amp Jump Starter is just Awesome! It has plenty of jump start power. I have had a chance to use it in the last few days on our fleet vehicles. Cars/trucks/vans…no problems. Charging the Stanley J309 is easy on this model, just plug it in with an ordinary household AC extension cord or use the DC adapter supplied.
Also, this unit has an on/off switch. My old one didn’t so the terminals were ‘HOT’ all the time. The Stanley unit has a battery level indicator, before the attempt it read full charge. After, the indicator was in the middle. Back inside, I hook it up to charge it again, it reads low. A Life saver device, well worth the bucks!