Features 100% brand new! high drain rechargeable vtc4 18650 battery, max current up to 30a. stable discharge rate, no "memory effect". low reoccurring operation cist, short circuit and overcurrent protection. safe and environmentally friendly, extremely long charging cycles, great for extended daily use. high energy density and extra long life for all your battery powered devices. it provides excellent continuous power supply solutions to your devices. automatically cut off when ptc internal safety switch has short circuit and safety valve internal pressure, can effectively prevent explosion. widely used in e-cigarette (electronic cigarette), flashlight torch, power bank, microphone, radio, gamepad, headlight, camera, rc toy, remote control, mini fan, portable printer, emergency light, instrument, audio equipment, aerial model, communication , medical treatment, energy storage, military industry, etc. specifications model: us18650vtc4 capacity: 2100 mah rated voltage: 3.6 v continuous discharge current: max. 30a internal resistance: ?15m? (small internal resistance, good performance) rechargeable:> 1000 cycles, theoretically charging temperature: 0 ~ + 45°. maximum 10 of this product can be ordered. swordslife reserves the right to cancel orders over 10 units. more than 100 stocks are available to be sold at the campaign price. the seller determines the selling price of the product you have examined. a product can be sold by more than one seller. sellers of products offered for sale by more than one seller are listed according to the price they set for the product, seller ratings, delivery status, promotions on the products, whether the cargo is free or not, whether the products can be delivered with fast delivery, and the stock and categories of the products. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.