- 3.7 Volt
- Rechargeable Lithium ION
- Re/Dishcharging Protection Circuit
- 10-year shelf-life
- Size: 66mm x 18mm (Diameter)
*Li-ion batteries are dangerous and can explode when used improperly. By purchasing this item you agree that we are not liable for any damages as a result from this product. Use at your own risk.
**Do not overcharge Li-ion batteries. Use proper battery storage when not in use. Do not store batteries in pockets or containers containing other items such as lose change or keys. Do not charge batteries unattended/overnight.
Bad batteries but Great Customer Service
I recently bought 2 Ultrafire 18650 4200MAh 3.7v Li-ion Batteries. I charged them up fully, then found that the moderate vape time was around 2 hours with a Vamo V5 at 9.5 watts. After several recharges, the vaping time seemed to drop to around 1 1/2 hours. I contacted service. The customer service agent saved me the trouble of returning the product and credited my account for the purchase, mentioning that I must have gotten a bad batch. Though the product didn't perform as advertised, what will keep me coming back for other purchases is this excellent level of customer support! Many thanks from a satisfied customer! David G