"Compact, portable Jumpstarters are among the most civilized automotive inventions of the past decade or sospurred by the rise of the lithium-ion battery over a previous generation of lead-acid devices. Suddenly, leaving your headlights on no longer means waiting two hours for a tow truck driver or begging strangers to hook up cables. Just pull out one of these little boxes, and go along your way."
"This tiny 3000-amp A3 Gooloo jumpstarter, small enough to fit in a glove box, is the lowest-cost jumpstarter whose reliability I can personally vouch for. I've carried mine in multiple cars over the past couple of years, and it hasn't failed me. This A3 was able to jump a bone-dead battery twice in a row on my hulking 95 Land Cruiser, without being out of juice."
"The Gooloo A3 is nearly half off right now for Amazon Prime Big Deal Days, available at the eminently reasonable price of $70 ($60 off). If what you actually want is a power bank to power all sorts of things, check out WIRED's guide to the best Power Bank Prime Day Deals, or look at many categories of useful (and cheap!) things in our Absolute Best Prime Big Deal Days picks, and our live blog of bargains and lightning deals."
Compact lithium-ion jumpstarters replace older lead-acid devices and eliminate long waits after a dead battery. The Gooloo A3 delivers 3000 peak amps in a glove-box-sized package and is rated for gas engines up to 9 liters and diesel up to 6 liters. The A3 has completed multiple successful jumps on large vehicles, including two consecutive jumps on a 1995 Land Cruiser, demonstrating dependable real-world performance. Some A3 models include additional features such as a tire inflator. Retail pricing can drop substantially during sales, with examples available near $70 during major deal events.
Read at www.wired.com
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