Disappointed with Battery Performance
I recently purchased 20 18650 batteries from this website, and unfortunately, none of them met the specifications claimed in the product description. The batteries were advertised as having a capacity of 4000mAh, but after charging each one from empty, they barely reached 2000mAh. Additionally, the internal resistance of each battery is over 80 mΩ which is significantly higher than expected and indicates poor performance. I’m quite disappointed with this purchase and wouldn’t recommend these batteries to anyone looking for reliable, high-capacity power sources. I hope the seller will address these quality issues promptly.