Enook 21700 4000mAh 40A rechargeable 3.7V battery on sale electric bicycle battery lithium ion battery

There are three levels of shipping service available: expedited shipping, standard shipping and economy shipping. The estimated delivery time and shipping services of each level is shown in following table.

1. MOQ

(1) Battery sample orders for testing are welcome.

(2) MOQ is lower, please feel free contact our staff if you need.

(3) It is our honor to provide service for you, no matter how many you order.

2. OEM & ODM

OEM and ODM orders are welcome, just send us your design and we can make your ideas into reality.

3. Quality

(1)100% tested in production. Test one by one before shipping. All the products will go through 5 checks.

(2) Mass production will only start after we get your confirmation of samples.

4. Manufacture

(1) We have our own factory.

(2) All Gokey goods are manufacturing by ourselves.

(3) Provide you “customized products” along with the best price.

5. Warranty

(1) 3 months for battery charger & flashlight

(2) 6 months for battery

6. After-Sale

(1) Timely provide tracking information during the shipping.

(2) Any defectives, we provide free ones along with your next order.

(3) Provide you free new products for testing.

ShenZhen Enook Technology Co., Ltd company mainly manufacture all kinds of rechargeable batteries chargers and battery packs , Enook is our own brand, all enook batteries are in full capacity and superior quality, which sell all over the world, we have fast delivery time, competitive price and long warranty time,Our company also provide 18650 26650 21700 18500 18350 batteries and Enook Nitecore chargers and many kinds of batteries cases, 100% original, Quality is our life, price is our core competence, please don't hesitate to contact us if you have any requirement, we'll provide our best service to you

FAQ

Q1: When are you available?
A1: 24 hours online every day
Q2:What's your main products?
A2: Lithium battery, Li-po battery, LiFePO4 battery, battery packs,For cylinder battery we have 18650,18350,18490,18500,16600,26650,22500,22650,26700etc.
Q3: How is the quality of the products?
A3: 1.Always provide the premium authentic products,never fake 

       2.Only provide A Grade cells
Q4: Do you provide the OEM&ODM service?
A4: Yes,of course.We will try our best to meet our customers' requestment
Q5: How do we place an order?
A5: Step1. Contact us
       Step2. Confirm all details
       Step3: PI(Proforma Invoice) made for you to check
       Step4: The payment is finished by you
       Step5: Our company account are checked at once
       Step5: The products are arranged as soon as possible
       Step6: Once given the tracking number,we will send you the tracking number
Q6: What's the lead time?
A6: 1.Sample orders: 1-3 working days
       2.Bulk orders: 3-7 working days according to different quantities
       3.OEM: 7-12 working days on receipt of sample confirmation
Q7: What's the shipping?
A7: 1.We will choose the most safest and the most economical shipping way for you
       2.Always 3-7 days from China to the destination country.Please note that some remote area may 1-3 days delay
Q8: What's the payment?
A8: T/T ,Western Union & Paypal

Q9: What's the warranty of the products?
A9: 1.12 Months warranty
        2.Once any problem,please send us HD videos and pictures to show the problem you met,if it's our problem,we will send you new products or full refund except artificial damage

Please contact me if you have any question!