Autoblog and Yahoo may earn commission from links in this article.A portable jump starter is one of those road trip items that's easy to forget about until a dead battery ruins the day. It's really useful right now during summer travel, when long drives, camping trips, family vacations, airport parking, boat launches, and quick roadside stops can put extra strain on a vehicle. Instead of waiting on roadside assistance or hoping another driver has jumper cables, a portable jump starter lets you handle a dead battery on your own.For a limited time, the Bookoo A9 Car Jump Starter is on sale at Amazon for $35, down from its usual $60 price. It's listed with 4,000A peak output and a 20,000mAh battery, with support for gas engines up to 12.0 liters and diesel engines up to 10.0 liters. That makes it useful for cars, trucks, SUVs, vans, trucks, motorcycles, boats, ATVs, RVs, lawn equipment, tractors, generators, and other 12V batteries you may run into at home or on the road.Bookoo A9 Car Jump Starter, $35 (was $60) at AmazonBookoo A9 Car Jump Starter, $35 (was $60) at AmazonCheck PriceIts compact size is part of what makes it a smart travel pickup. At 6.5 inches tall, 3.2 inches wide, 1.6 inches thick, and weighing just 0.9 pounds, it can fit in a glove box, trunk, console, or emergency kit without taking up much space. It also comes with smart jumper clamps, a charging cable, hard carrying case, and user guide. Beyond jump-starting, the A9 can work as a portable power bank with USB outputs for phones, tablets, GPS units, cameras, and other small devices. AdvertisementAdvertisementIt also has a built-in LED light with flashlight, strobe, and SOS modes, plus IP66 water resistance and protection features for issues like reverse polarity, short circuits, over-current, over-voltage, over-charge, and sparking. For summer road trips, long drives, travel plans, and everyday emergency preparedness, it's a cheap item that can save a lot of stress.Related: Walmart Has a $150 Jump Starter That 'Every Car Should Have in It' on Sale for 70% Off"This is worth every penny," said one satisfied user. "It has saved me so many times. You don't even need another car to give you a jump. This handy dandy device is awesome!"Another happy buyer said, "I've used this jump starter several times without any trouble. Everyone should have one of these for emergency use."Deals We're LovingDbpower Car Jump Starter, $48 (was $80) at AmazonSharmeal Car Jump Starter, $35 (was $50) at AmazonLifmocer Car Jump Starter, $60 (was $100) at AmazonAdvertisementAdvertisementThis is a limited-time deal at Amazon that likely isn't going to last long, so check out the retailer's site today and spruce up your emergency kit with the BooKoo A9 Car Jump Starter for only $35 while it's still on sale for over 40% off.This story was originally published by Autoblog on Jul 20, 2026, where it first appeared in the Deals section. Add Autoblog as a Preferred Source by clicking here.
+67 others
