GOLDFOREST 4000A Portable Car Battery Jump Starter with Air Compressor

Product details

From the brand Built to Start. Made to Last. GOLDFOREST creates precision-crafted auto gear—from jump starters to dash cams—designed for safer, smarter, and smoother driving. Welcome to GOLDFOREST We’re a passionate team focused on building smarter, safer car accessories you can count on—wherever the road takes you. Our promise is simple: Premium Quality – Thoughtfully built to perform and last. You First – Questions or concerns? We're here to help, always. Welcome to GOLDFOREST We’re a passionate team focused on building smarter, safer car accessories you can count on—wherever the road takes you. Our promise is simple: Premium Quality – Thoughtfully built to perform and last. You First – Questions or concerns? We're here to help, always. Product description Portable Car Battery Jump Starter with Air Compressor How many tires can this jumper box with air pump inflate on a full charge? It can inflate up to 8 car tires from flat to 36 PSI on a full charge. For continuous use, allow at least 1 minute between inflations to prevent overheating and auto-shutdown. How many tires can this jumper box with air pump inflate on a full charge? It can inflate up to 8 car tires from flat to 36 PSI on a full charge. For continuous use, allow at least 1 minute between inflations to prevent overheating and auto-shutdown. What vehicles can this jump starter boost? It supports most 12V vehicles with up to 10L Gas / 8L Diesel engines, including cars, trucks, motorcycles, tractors, lawnmowers, SUVs, snowmobiles. For repeated jump-starts, wait at least 10 minute between attempts to allow capacity recovery. What vehicles can this jump starter boost? It supports most 12V vehicles with up to 10L Gas / 8L Diesel engines, including cars, trucks, motorcycles, tractors, lawnmowers, SUVs, snowmobiles. For repeated jump-starts, wait at least 10 minute between attempts to allow capacity recovery. Why is there grease around the connection after inflation? The pump uses an oil-lubricated compressor for better sealing and longer lifespan. The grease is non-toxic, does not affect tire airtightness, and won’t cause any harm. Why is there grease around the connection after inflation? The pump uses an oil-lubricated compressor for better sealing and longer lifespan. The grease is non-toxic, does not affect tire airtightness, and won’t cause any harm. How long does the battery hold a charge? It can stay charged for up to 2 years. However, to maximize battery lifespan, it's recommended to recharge the unit every 3 months. How long does the battery hold a charge? It can stay charged for up to 2 years. However, to maximize battery lifespan, it's recommended to recharge the unit every 3 months. Why does the battery capacity run out after only 1 jump start? The battery capacity will appear "run out" after a jumpstart trial because of delivering a peak current at 4,000 amps in 12V. Just leave it unused for 10 mins or so and the capacity will increase gradually for laterh usage. Why does the battery capacity run out after only 1 jump start? The battery capacity will appear "run out" after a jumpstart trial because of delivering a peak current at 4,000 amps in 12V. Just leave it unused for 10 mins or so and the capacity will increase gradually for laterh usage. [8-IN-1 PORTABLE EMERGENCY STATION] More than a basic jump starter: integrates battery booster, 150PSI tire inflator, digital pressure gauge, 20000mAh power bank, 400-lumen LED flashlight with SOS/Strobe modes. Type-C input for fast recharging, USB-A output for charging phones and tablets on the go [4000A PEAK - START COMPLETELY DEAD BATTERIES] Instantly revives drained 12V vehicles up to 10.0L gas or 8.0L diesel engines, even at extreme temperatures from -4°F to 140°F. Force Start mode jumpstarts zero-voltage batteries that other starters cannot. Up to 70 starts per charge, 1500+ recharge cycles [SMART 150PSI TURBO AIR COMPRESSOR] Turbocharged 30L/min motor inflates flat car tires (0-36 PSI) in under 5 minutes. Set-and-forget technology: auto shut-off at your preset pressure prevents over-inflation. 5 preset modes, 4 pressure units (PSI/BAR/KPA/kg/cm2), 4 nozzles included [SUNLIGHT-READABLE LCD DIAGNOSTIC DISPLAY] Large high-contrast screen remains clearly visible in direct sunlight, showing real-time battery percentage, tire pressure readings, charging status, and error alerts. No guesswork: always know exactly when your device is ready for emergencies [10-LAYER SAFETY WITH V0 FIREPROOF BATTERY] Smart jumper clamps feature spark-proof technology, reverse polarity alarm with loud beep and red light warning, overcurrent, short circuit, and temperature protection. Premium lithium cells meet V0 fire resistance rating for maximum safety [ESSENTIAL CARE TIPS - PLEASE READ] (1) Fully charge before first use. (2) Recharge every 2-3 months during storage - lithium batteries self-discharge 3-5% monthly and deep discharge causes permanent damage. (3) Jump start when battery shows 75%+. (4) Allow 5-min cooldown after 10 min of continuous inflation [COMPLETE PROFESSIONAL KIT] Package includes: 1x GOLDFOREST Jump Starter with Air Compressor, 1x Smart Jumper Clamps, 1x Inflation Hose, 4x Nozzle Adapters (car/bike/ball/inflatable), 1x USB-C Charging Cable, 1x Rugged Storage Bag, 1x User Manual. Backed by 12-month warranty and lifetime tech support