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

Have been using these for several months now in a vape mod and can guarantee these are authentic Samsung batteries. After months of heavy use they still take very near a full rated charge. Would highly recommend.

A good all-around battery, it's used quite a bit in my vape mod. Holds a good charge and I believe it came from Samsung. You know they make good stuff and this doesn't disappoint. Good battery for the $.

Using them for months, no problems. Samsung is usually good brand to go with in my book.

There are no batteries higher than 3000, bc it’s the max the technology will go. 9900 mAh batteries are fake. These are the real deal and as high as current tech can go in milliamp hours.

By a review on P.F. This was one of the better brands he tested. But, one, only charged 1 time, and nothing after that. The other 2, I used longer. Recharges 3, maybe 4 times, and they died. Seller trys to tell me I discharged them too far. Well, was using in flashlight, and the power button would flash RED when battery was getting low, so, I would remove them, and put on the charger, OR charge in the flashlight. But, they quit taking a charged. Seller DID replaced the 1st bad one. But not the other 2. The 4th battery, is in a flashlight I just dont use hardly any, So, it hasnt had the cycles the other 3 have had. And the replacement battery, I believe, has died also now. I had them marked.

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.

Bought two packs (8 batteries total) Arrived in a few USPS/FedEx insulated bags wrapped into each other.. Inside of that were the plastic containers holding the batteries. Those were a bit smashed. But the batteries inside had no dents, scratches, oddities otherwise. Physically, the batteries look like legit Samsung 30Qs Did some measurements on the batteries: Weight was around 45grams per each battery ✓ Voltage was good ✓ (~3.55v out of the plastic container, charged up to 4.2v, 3.6v nominal after that) Charge was good ✓ (charged to near ~3k mah or above on each battery) I didn't check amperage (15amps) out on the batteries, but I would assume it should be fine. If that turns out not to be the case, I'll report back here. I charged one slow at 0.5amps (approximately 5.5-6 hours), and later on I upped the voltage a bit to 2 amps (wasn't paying attention here but less than 2 hours I think). No issues.

Seems as described. Works well and timely shipping