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Shockli 21700 4550mAh High Drain 30A Flat Top 3.7V Battery 2PCS
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Shockli 21700 4550mAh High Drain 30A Flat Top 3.7V Battery 2PCS

- Cobalt Blue

4.87 15 Customer Reviews
    COD This product supports COD on delivery. Suggestions: Do not place orders with non-COD products, otherwise you will not be able to choose COD payment method.
    Ship between: Sep 28 - Sep 30, Estimated Shipping Time: business days Order Processing Time may require a few days. Once dispatched from warehouse, Shipping (or Delivery) Time depends on the Shipping Method.
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  • interest-free You can enjoy a maximum of 0 interest-free installments, and may not enjoy this offer when placing orders with other products
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Shockli 21700 4550mAh Rechargeable Battery Descriptions

Main Features:
High capacity
The capacity is 4550mAh.
• Rechargeable lithium-ion battery
Good choice for higher power levels.
Good choice for higher power flashlight and electrical tools.



Brand: ShockLi
Type: Battery
Battery: 21700
Battery Type: Lithium-ion
Rechargeable: Yes
Protected: No
Voltage(V): 3.7V

Dimensions and Weight

Product weight: 0.1600 kg
Package weight: 0.1700 kg
Product size (L x W x H): 2.10 x 2.10 x 7.00 cm / 0.83 x 0.83 x 2.76 inches
Package size (L x W x H): 11.00 x 10.00 x 3.00 cm / 4.33 x 3.94 x 1.18 inches

Package Contents

Package Contents: 2 x Battery
Shockli 21700 4550mAh High Drain 30A Flat Top 3.7V Rechargeable Battery 2PCS- Cobalt Blue
Shockli 21700 4550mAh High Drain 30A Flat Top 3.7V Rechargeable Battery 2PCS- Cobalt Blue
Shockli 21700 4550mAh High Drain 30A Flat Top 3.7V Rechargeable Battery 2PCS- Cobalt Blue
Shockli 21700 4550mAh High Drain 30A Flat Top 3.7V Rechargeable Battery 2PCS- Cobalt Blue

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Customer Reviews

4.87 out of 5
  • 13
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  • Adam
    Yes (0) Color: Cobalt Blue
    Slight improvement over the known 4000mAh 15A variant
    According to a few tests, this battery can hold its voltage slightly better during discharge, than the already known 4000mAh 15A variant (Shockli wraps that with 20A max current rating).

    Battery wrap feels relatively sturdy, and color is nice (not significant consideration, but nah).

    Please ignore (delete) my previous 1-star rating, it was clicked by mistake!

    Nov 29,2018

  • Bast77
    Yes (0) Color: Cobalt Blue
    Shockli 21700 4550mAh (Purple)
    Для бокс мода для парения похоже подойдут до 30-50вт. 21700 4550mAh (Purple) 2018 UK.html
    Аккумуляторы имеют большую емкость и могут выдавать довольно высокий ток, это похоже на хорошие батареи.

    Aug 31,2019

  • Aff
    Yes (0) Color: Cobalt Blue
    Great high capacity 21700 batteries!
    These unprotected batteries fit my Fireflies E07 perfect and lasts a long time. Genuine great batteries that I am very happy with. And I could easily recommend them for everyone looking for good 21700 cells. They fit my Xtar VC4 charger as well. Great product!

    May 12,2019

  • Wojtek
    Yes (0) Color: Cobalt Blue
    Shockli 21700
    Everything is almost good. I received the order after 18 days. The description is that it contains two additional wraps. I received only one wrap. It's hard to survive somehow. Still, I'm happy. Recommend.

    Oct 30,2019

  • kenshi.kun
    Yes (0) Color: Cobalt Blue
    Good batteries
    Comes with two protective cases, and two spare plastic sleeves. Build quality seems good, and electrically surpasses the avatar 4000mAh 21700 battery I have, so overall good for use in a single battery mod.

    Dec 27,2018

FAQ for Shockli 21700 4550mAh Rechargeable Battery

  • How to choose a LED flashlight?

    LED flashlight is a new type of flashlight with LED (light emitting diode) as its light source. We will introduce you the selection tips of LED flashlights and the advantages of LED flashlights: How to choose a LED flashlight
  • How to dispose of used-up batteries?

    There are three ways to reference in this post.

    How to dispose of lithium batteries?

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There are two key factors which will affect the time you receive your items.

Item processing time
After receiving your order,we require some time to test the product to ensure its quality.The exact processing time varies depending on the item.The average processing time is 3 working days.but this can also be affected by the item's stock status. For small quantity orders,the processing time is 1-3days while larger quantity orders may require 2-5days.
Shipping methods
China Warehouse:
Shipping Type Country or Region Arrive within 1-7 Days Arrive within 8-15 Days Arrive within 16-30 Days Arrive within 31-45 Days Average Time (Days)
Unregistered Air Mail or Registered Air Mail United States 0.52% 44.87% 49.88% 3.5% 18.13
Spain, United Kingdom, Italy, Germany, France & Portugal 5.18% 43.44% 48.34% 1.17% 15
Netherlands, Greece, Poland, Hungary, Slovakia, Czech Republic 2.96% 40.34% 52.54% 3.74% 18.66
Russia 0% 4.45% 84.41% 11.1% 28
Japan, Korea 0% 21.30% 68.80% 9.66% 17.75
Brazil 0% 0% 23.91% 72.09% 38.6
Turkey 0% 37.75% 59.05% 3.1% 20.33
Thailand, Singapore & Malaysia 0% 40.39% 56.12% 2.6% 16.2
Other countries 0.7% 38.79% 47.94% 8.56% 23.57
Priority Line United States 12.28% 79.05% 7.4% 0.52% 11.75
Spain, United Kingdom, Italy, Germany, France & Portugal 8.44% 66.56% 23.45% 0.45% 13.55
Russia 0% 3.48% 75.79% 20.04% 31
Brazil 2.21% 6% 61.29% 25.46% 30
Turkey 20.42% 77% 3% 0.08% 10
Australia 7.67% 86.60% 5.68% 0% 11
Korea 97.54% 1.57% 0.89% 0% 7
Japan 95.80% 2.09% 0% 0% 6.84
Thailand, Singapore & Malaysia 58.96% 41.04% 0% 0% 8.45
Other countries 22.33% 30.8% 27.62% 17.64% 18.65
Expedited Shipping ALL countries(EMS) 3.8% 46.8% 26% 15% 14.8
ALL countries(DHL) 65.8% 25.75% 3.86% 0.37% 6.72
GW Warehouse: Typically 3-5 days to the UK, 3-7 days to other European countries.
USA Warehouse: Generally, 3-7 days to a USA address.
ES Warehouse: Generally, 2-5 days to the Spain, 3-7 days to the Portugal.
Shipping from warehouse nearest to shipping address is faster. Additional charges may apply.
Note: This is a general guide and delays maybe caused force majeure, natural disasters, inclement weather, war, public holidays, and factors outside our control. Generally speaking, we offer free shipping for Shockli 21700 4550mAh Rechargeable Battery to United States (US, USA), United Kingdom (UK, GB), Germany, Italy, France, Spain, Portugal, Poland, Brazil, Russia, Japan, Greece, Austria, Hungary, Slovakia, Czech Republic, Ireland, Lithuania, Israel, Denmark, Norway, Sweden, Canada, Australia, Netherlands, Korea, Turkey, Mexico, Ukraine, Romania, Columbia, Thailand, Singapore, Malaysia etc. Please choose the shipping methods for the final price.

Payment accepts PayPal,Credit Cards,Wire Transfer,Westem Union, YandexMoney,Webmoney,Boleto,OXXO and BKM as secure payment methods.

The most convenient payment method in the world.
Wire transfer
For orders which exceed $1,500,please contact us at
Note: please email us the order number,the amount transferred along with currency type,and the exact date of the wire transfer.
Western Union
Please contact us at for details.
Note: please email us the following information after you have paid via Westem Union:
· Control Number(10 digits)
· The exact amount sent along with the currency
· Name of sender.
· Address of sender
YandexMoney、 Webmoney
With YandexMoney and Webmoney, it is convenient and safe for you to pay via credit card、wallet or cash
For Brazil customers, we accept Boleto: you only need to fill in the payment information, remember your Boleto Voucher information and pay it within 3 days at any Boleto stores.
For Mexico customers, we accept OXXO: you can choose OXXO payment on our website, and then remember your OXXO Voucher information and pay it within 3 days at any OXXO stores.

Do you want to bulk buy Shockli 21700 4550mAh Rechargeable Battery ? Please submit your wholesale Shockli 21700 4550mAh Rechargeable Battery inquiry below. Please note we usually don’t offer free shipping on wholesale Shockli 21700 4550mAh Rechargeable Battery orders, but the wholesale price will be a big bargain.

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