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

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

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

Works perfectly

THESE BATTERIES ARE THE BEST!

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.

Wouldn't hold a charge after a couple months.

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 30QsDid 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.

I've ran these batteries for a long time without any problems. Good battery life and charge time.