Are those mini jump packs worth it?

HALO Bolt Compact Portable - Car Battery Jump Starter with 2 USB Ports to Charger Devices, Portable - Rose Gold : Automotive

Hi-Tec Batteries - 12V Lithium Multifuction Mini Jump Starter 600AMP – Just Jap

Is It Necessary to have a Portable Jump Starter Pack in your Vehicle? : r/whatcarshouldIbuy

QOLIXM Jump Starter, 2000A 18000mAh Battery Starter for Up 8.0L Gas/7.5L Diesel Engines, Car Starter with Window Breaker, 12V Portable Auto Jump Box, Battery Booster with LED Light and 2*USB Output

12V Mini Portable Car Jump Starter 20000mAh Power Booster Battery Charger Black

Are Small Jump Packs Any Good?

Lithium Jumper Pack, any good? - The Hull Truth - Boating and Fishing Forum

630 Peak Amp Portable Car Battery Jump Starter and Power Pack with 150 PSI Air Compressor

AVAPOW A2000 Car Battery Jump Starter 2000A Peak Current 12000mAh Batt

Pocket Jump Starters vs Heavy Duty Packs - Which Are Better?

What kind of Battery do they use in such tiny unit (60x80x1400mm) to generate huge current (Around 1000A) to crank car engine? : r/batteries

Get gk jmpstr 0002 multifunction powerbank mini jump starter 360 ampe

5 Benefits of a Portable Jump Starter