• Brand: Samsung
• Model: 40T
• Size: 21700
• Nominal Capacity: 4000mAh
• Nominal Voltage: 3.6V
• Maximum Voltage: 4.2V
• Discharge Current: 30A Maximum Continuous
• Style: Flat Top
• Protected: NO, UNPROTECTED
• Approximate Dimensions: 21.1mm x 70.4mm
• Approximate Weight: 66.8g

These are high capacity and high discharge current batteries. If mishandled/mistreated they can cause serious injury. Use at your own risk.

Safety Notes:
Do not short.
Do not leave unattended when charging.
Do not leave unattended immediately after charging.
Do not carry in your pocket or purse unless they are in a secure non-conductive carry case.
They are not toys. Do not let your children or pets play with them.
Do not recharge with cheap chargers that keep on trickle charging after the normal cycle or that do not follow the Constant Current / Constant Voltage (CC/CV) algorithm properly.

Shipping: Please note that due to aviation safety regulations lithium batteries cannot be sent via air freight.

Batteries sometimes have a small sticker attached. This is used for international shipping declarations by battery wholesalers and can be removed. Battery-specific model numbers are printed directly onto the plastic wrap by the manufacturer.

Rechargeable batteries, regardless of where they come from require responsible use. Incorrect handling can lead to damaged hardware or serious injury.

Before using any rechargeable battery make sure you understand the risks and take proper precautions. Never leave charging batteries unattended and always place the charging device on a stable fire-proof surface. Do not use any battery or battery charger that is damaged in any way whether that damage is visible or internal. Always transport batteries in a non-conductive container and ensure that batteries cannot come in contact with each other. Dispose of batteries in a safe and responsible manner. Contact your local council to find out what programs are in place to help you dispose of your batteries.

VAPELAB will not be held responsible or liable for any injury, damage, or defect, whether permanent or temporary, that may be caused by the improper use of batteries.