I hadn't heard of the Hart line of tools before. Looks like something new through Walmart. This tire inflator and LED light kit combo is a nice set. It comes with one 20 volt battery and charger. It took around three hours to charge fully the first time. Charger is your basic cap charger that fits on the top of the battery with lights to let you know when it has reached full capacity.
The light is compact and throws an excellent amount of light for its small size—around 200 lumens. So much better than traditional flashlights. The head rotates to direct the beam higher or lower. The way the handle is made allows you to place it upside down from a shelf like a clamp. The rubberized grip and a loop to hang it are nice touches. It is pretty durable. It already took a fall while I was testing it out and there was no damage.
This is my first inflator that is a single function tool and doesn't also boost your car battery or provide back up power. I like this much better. So much lighter and more portable. The inflator comes with adaptors that allow you to inflate float toys, air mattresses, footballs, basketballs, etc. and a nice little storage area for them right on top. The hose is twenty inches long which is longer than most tire inflators I've used and makes inflating car tires easier. I can set the inflator down, use both hands to lock the hose on the valve stem then pick up the inflator and press the trigger. The manual states max pressure is 150 psi and that it can fully inflate a flat tire in seven minutes. The only problem is you can only run it five minutes at a time before allowing a cooling off period so it's going to take you more like fifteen to twenty minutes with a flat. That's an extreme situation. I'd prefer to use it just to top off tires if they get low. The digital readout on the back informs you of air pressure as you're inflating and automatically turns off after thirty seconds of non-use so it doesn't wear the battery.
I inflated the flat tires on my bike and topped off the tires on my SUV and truck (which has some massive tires) that had lost air with the cold and it filled them in no time. I can't speak for how long the 20 volt battery lasts as I've been using the light as well as the inflator and the battery is still on its first charge. One thing I would have liked to see is a gauge on the tool or battery to let you know when it's getting low. I also wish the inflator was equipped with its own small light to help you fill a tire in the dark. With only one battery pack, you can only use the light or the inflator—not both at the same time.