Authentic 30Q, 3.7V Flat Top Real 3000mAh 18650 Battery Rechargeable Samsung30Q(4 Pack)

Good product.

This is my 4th set and they are great little batteries for the price and definitely genuine.f I did have one die on me after about a year but, that is something that can happen with any battery. I use these in my vape and also in a rekon 35 drone. I can easily get 14 minutes on my drone with my vtx set to 100 mw. I can get aroung 11 minutes with it on 200mw so these are great.

I have used these Samsung batteries before in a single battery vape mod and they deliver consistent power all the way down to the end (40-50w). This is the first time I have purchased them from this seller and so far they have all worked and charged. In my application I find the life to be excellent. I also occasionally use them as back up batteries for my work flashlight that I use heavily and they work great there as well. I will update this in a few weeks if there are any issues. Oh, and the shipping and handling was super fast, don't know if it's normal, but I was shocked how quickly they arrived (5-7 days early!).

Appears to be genuine and charged well. Fit my pack nicely.

Not the best, a lot better than the worst ones I've bought here as far as capacity, and life cycle goes. The worst ones were the ones that claim a ridiculously exaggerated capacity.

Move on, save your money. These are garbage and not authentic.I have a number of devices and chargers for 18650 batteries which are used daily.(Work lights, dive lights, flashlights, nitecore d2 chargers…..etc)I have had a fleet of IMREN 18650’s in service for the last 4-5 years that have worked great.I picked up a 4 pack of these Samsung’s hoping to refresh my battery fleet with some new tech or higher capacity. I use 18650’s daily.These “Samsung” 18650’s have about 25% the capacity of my 5-6 year old rebranded IMREN’s.It’s a joke (if they didn’t steal my money)Issues:1-They go from dead to full charge in just over an hour. This was my first red flag. All other 18650’s I have take 4-12 hours to charge.2-I take a fresh battery off the charger. 10 mins later my work headlamp (zebralight H600) is dimming due to low voltage. The emitter and body is not hot, so it’s not high temp. I have 3 different ZebraLights, each of the four batts acts the same.TL;DR - 5 or 6 yr old IMREN vale batts have significantly (200-300%) higher capacity than these.I have had these batteries for a bit over 6 months now. My 6-7 year old various 18650’s each outperform these.Move on, save your money. They are not authenentic.

I have used them to repair two Dewalt batteries? The batteries are working great.

I use these in a headlamp, and they don’t last as long as my previous set of quite old Panasonics, even though these new Samsungs supposedly have 3000 maH.How’s that?Very underwhelmed. They take hours to charge and discharge quickly. Was working on a truck last week and went into my fourth and final battery before the day was up. Meanwhile, the FIRST one to discharge that morning was STILL not charged, even though I put it in the charger as soon as it died.Something fishy here. These are supposed to be the best, but very old Panasonics that I ruined in saltwater were doing waaayyyy better until their demise.If you buy these, buy all four. You’re going to need them.My next set will not be these. Searching now.