(UPDATED EXTREME FREEZE CHALLENGE) GOOLOO GT4000, LOKITHOR J401X, HULKMAN 10, JF.EGWO 6000A, FANTTIK

Today, we test the -4 F frigid cold on the Hulkman 10.0, Lokithor J401X, Gooloo GT4000, JF.EGWO 6000A & Fanttik T8 Max, to see which units will be able to jump start in the frigid temps. We had these jump starters in the freezer for 2 weeks straight until they hit negative temps and became blocks of ice. The JF.EGWO 6000A & Fanttik T8 Max were both able to jump start the V8 about 10 minutes after the video had ended, these 2 units do not have preheat technology which is why it took a few extra minutes to jump start in negative temps. Hulkman 10.0, Lokithor J401X were able to jump start the V8 with -4 F on the very first shot, these 2 units have preheat technology up to -40 F. The Gooloo GT4000 was able to jump start the V8 when the video was coming to a close, the preheat technolgy finally activated and the snowflake disappeared. Hulkman 10.0 https://www.amazon.com/sspa/click?ie=... Lokithor J401X https://www.amazon.com/LOKITHOR-20000... Fanttik T8 Max https://www.amazon.com/sspa/click?ie=... Gooloo GT4000 https://www.amazon.com/GOOLOO-GT4000-... JF.EGWO 6000A F60 https://www.amazon.com/JF-EGWO-Starte...