20V MAX Rechargeable Li-ion Battery for MC3 / C2 with Real-time Capacity Indicator USB Output Only Compatible Product

Does what is supposed to do.

Capacity as advertised. Charging is quick with wall wart suggestion/ included. Runs my tire inflator for 4 full flat car tire fills before recharging.

So far so good.

I have 3 Air compressors, one for each car, and the batteries I buy work great! I really like the quality and reliability of these batteries.

First of all, it was my mistake to have lost the original battery pack which I had only used once in the three months after I purchased the (fantastic) air compressor. So, I purchased a replacement battery pack and immediately connected my charger to it. The battery pack should have charged within an hour, but after several hours it had not progressed past one (green) level of charge. Customer support from AstroAl is nonexistent. Amazon was great in listening to my complaint and they issued a refund to me. Thank you, Amazon. However, I’m still without a battery pack and I’m hesitant to try ordering again I. For twice the cost of a battery pack replacement, I could just as easily replace the whole air compressor, but what a waste of money. Yes, the compressor did come with a plug-in the cigarette lighter attachment, but it takes for ever to inflate a slightly low tire (while running the engine) and it failed to stop inflating once it reached full pressure. In fact, it over inflated several psi’s past the pressure mark shown on the gauge. I had to let air out of the tire. So, the battery pack is the better option, provided it can be charged. UPDATE: I took the chance and ordered a second time. This time the battery pack arrived and it was just a few minutes of charging and it was ready to go! I would give it a 5 star, except for receiving a dud the first time.

Very good item

Came 1/2 charge, took less than 1hour to full , will not charge on air compressor 😠

Updated Review: 5/5 Stars. Out of nowhere, AstroAI contacted me about receiving a refund for this product. I accepted. They did not ask me to revise this review, but I think it's only appropriate. This is a fine battery and works without issue. Just be sure to buy the bundle with the charger, if you need it. It looks like the original product without the charger is still for sale. Original Review: 1/4 Stars. Doesn't come with charger. Charger cost nearly as much as the battery. That seems deceptive since comparable products come with chargers.