When connected to a USB charger, no other charge LEDs will be illuminated. Once disconnected from the charger, all four (4) Charge LEDs will be illuminated when the internal battery is between 75%-100%, and the unit is powered "ON". By contrast, the Dewalt DXAEJ14, Clore Automotive JNC660, and Stanley J5C09 deliver a constant current when hooked up to your battery terminals. The jump starters can deliver three boosts at a full charge, although the manufacturers recommend charging after each use. This is because these models utilize SLA batteries, which discharge more rapidly than lithium-ion batteries. However, this does not mean they deliver an inferior boost; in fact, we found them fully capable of reviving even larger diesel and deep-cycle marine batteries. Among the SLA types, we were less fond of the Stanley J5C09 as it delivered slightly less current under load in our tests. Battery Storage

The 25% Charge LED will slowly pulse "On" and "Off", when the battery is less than 25% charged. When the battery is 25% charged, the Red Charge LED will be solid. Don't let the compact size of the GOOLOO 1200A Peak fool you. This unit is a small but mighty contender in the lineup — it delivers 1,200 peak amps while weighing in at just over one pound. It also happens to be one of the most affordable jump starters we tested. Beyond jump-starting, it also features two USB charging ports, a DC power outlet with a lighter adapter, and a small LED flashlight with several modes. The USB charge ports are 5V, and a Smart charging port will bump to 9V for rapid charging on compatible devices. The 66.6Wh lithium-ion battery can provide numerous boosts to a deep-cycle SLA or up to three iPhone charges before becoming fully depleted. In our testing, this unit was capable of jumping a 6.5-liter diesel engine, exceeding the manufacturer's suggested limit. GB40 can jump-start vehicles with a maximum of 6.0-liter gas engines and 3.0-liter diesel engines. This model can also jump-start 20 cars before its battery is depleted. The flashlight’s strength is 100 lumens. Make sure to correctly connect the booster clamps to your vehicle's battery. Make sure to connect the positive clamp (+) to the positive terminal of the battery and the negative clamp (-) to the negative terminal.For professional use, we feel there are few if any battery chargers better than those found in NOCO’s PRO range. This example, the PRO 25, boasts a 25 amp power rating for fast and efficient charging across a range of voltages, including six-volt, 12-volt and 24-volt batteries. Included with the charger is a set of industrial-grade ultra-flexible silicone cables – effective down to -40°- with braided shielding for maximum protection. Yes, the Noco GB40 will charge your battery. It is a battery charger and maintainer that is designed to keep your battery charged and in good condition. Q4: How do I charge Genius GB40? Along with its battery chargers and starters, NOCO still makes battery corrosion preventative just as it has done for a hundred years. The compound is formulated to create a chemical barrier around the terminal surfaces, making them impenetrable to corrosion causing acid fumes. By doing so, the compound can extend battery life and preserve the overall condition of the battery, even the cables and battery box. Yes, when you get it, fully charge it before first using it to ensure optimal performance. Q6: Can I leave NOCO boost plus gb40 plugged in?

Recharge your personal devices on the go, like smartphones, tablets, e-watches and more - up to 4 smartphone recharges. For those who require a lot more power than what the GB40 and GB50 can offer, you must fork out quite a bit more dollars for the GB70. Saying that, it still offers excellent value for the amount of power it carries, its added features, and a higher rating for jump-starting batteries. Recap: Which one should you buy?

GEN5X2

Of course, this doesn’t reflect the qualities of these products. In most cases, new is always better. Well, in this case, it is. But we will get to that later. Power capacity Noco Boost’s flashlight features seven different modes including emergency strobe and SOS. This makes it easier for other motorists to see you and easier to signal for help. The flashlight can be used for any situation when visibility is decreased and you need an extra source of illumination. The 75% Charge LED will slowly pulse "On" and "Off", when the battery is less than 75% charged. When the battery is 75% charged, the Yellow Charge LED will be solid. USE THIS MODE WITH EXTREME CARE. THIS MODE IS FOR 12-VOLT LEAD-ACID BATTERIES ONLY. BOTH THE SPARK PROOF AND REVERSE POLARITY PROTECTION FEATURES ARE DISABLED. PAY VERY CLOSE ATTENTION TO THE POLARITY OF THE BATTERY BEFORE USING THIS MODE. DO NOT ALLOW THE POSITIVE AND NEGATIVE BATTERY CLAMPS TO TOUCH OR CONNECT TO EACH OTHER AS THE PRODUCT WILL GENERATE SPARKS. THIS MODE USES VERY HIGH CURRENT (UP TO 1000 AMPS) THAT CAN CAUSE SPARKS AND HIGH HEAT IF NOT USED PROPERLY. IF YOU ARE UNSURE ABOUT USING THIS MODE, DO NOT ATTEMPT AND SEEK PROFESSIONAL HELP.