Pros
- Holds charge for months and delivers multiple jumps without recharging
- Easy to use even for non-mechanics, with clear instructions and safety alerts
- Versatile for cars, trucks, ATVs, RVs, and more
- Exceptional customer service with quick replacements
- Built tough with quality copper clamps and durable case
Cons
- Slightly larger than ultra-compact models, prioritizing power over minimal size
- Wall charger not included, requires separate USB-C adapter
- Rare defective units possible, though service resolves quickly
The LIFMOCER GS400 is a robust 12V portable jump starter designed for drivers of passenger cars, trucks, ATVs, motorcycles, vans, RVs, UTVs, watercraft, and tractors. With 4000A peak current, it handles engines up to 12.0L gas or 10.0L diesel, making it perfect for anyone prone to dead batteries from cold weather, long storage, or parasitic drains.
Standout features include a boost mode that restarts vehicles even with batteries below 2V, an HD LCD display for real-time status monitoring, and 10 safety protections against sparks and reverse polarity. Users report it firing up Jeeps, trucks, and older cars instantly, often multiple times on one charge while retaining over 85% power. It doubles as a USB quick charge power bank and flashlight, adding emergency utility.
Build quality shines with heavy-duty copper clamps, excellent conductivity cables, and a 20Ah lithium-ion battery that holds charge for months. The included EVA storage case keeps everything organized and protected. While compact enough for trunks, its size reflects the high power capacity.
Minor drawbacks include no bundled wall charger and occasional larger footprint compared to weaker units. Overall, the GS400 earns high praise for reliability and ease, backed by strong customer service. Verdict: Essential for peace of mind on the road; buy it for yourself or as a gift.
Battery Type: Lithium Ion
Voltage: 12 Volts
Battery Capacity: 20 Amp Hours
Amperage/Peak Output: 4000 Amps
Compatible Vehicles: Passenger Car, ATV, Motorcycle, Van, RV, UTV, Truck, Watercraft, Tractor
Included: Jump starter, smart jumper cables, USB-A to USB-C cable, carrying bag, user manual
Warranty: 2 years