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KeepPower 4200mAh 26650 Rechargeable 3.7V IMR Flat Lithium Battery Max 50A
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KeepPower 4200mAh 26650 Rechargeable 3.7V IMR Flat Lithium Battery Max 50A


5 7 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: Jun 03 - Jun 05, 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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Main Features:
● Typical Capacity: 4200mAh (0.2C discharge)
● Minimum Capacity: 4100mAh (0.2C discharge)
● Nominal Voltage: 3.7V
● Rated Charge: CC/CV, 4200mA, 4.20V
● Standard Charge Time: 2.0 hours
● Maximum Charge: 6A
● Full Charged Voltage: 4.20V±0.05V, 50mA end-off current
● Discharge End-off Voltage: 2.50V
● Max. Plus Discharge Current: 50.0A
● Max. Constant Discharge Current: 30.0A
● Initial Impedance: Max. 25mΩ
● Operating temperature: Charging: 0 Deg.C - 45 Deg.C, discharging: -20 Deg.C - 60 Deg.C
● Storage temperature: 1 year: -20 - 25 Deg.C, 3 months: -30 - 45 Deg.C
● Life: Over 2000 times charge and discharge cycle life



Brand: Keeppower
Type: Battery
Battery: 26650
Rechargeable: Yes
Protected: No
Voltage(V): 3.7V
Suitable for: Flashlight,PDA

Dimension and Weight

Product weight: 0.09 kg
Package weight: 0.15 kg
Product size (L x W x H): 6.7 x 2.6 x 2.6 cm / 2.64 x 1.02 x 1.02 inches
Package size (L x W x H): 8 x 4 x 4 cm

Package Contents

Package Contents: 1 x 26650 Battery

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Customer Reviews

5 out of 5
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  • randomice
    Real battery capacity
    Battery purchased for use with flashlight Ultrafire F13 (
    In comparison with the adapter and three AA batteries the flashlight has gained a new life :)
    The capacity was measured on the charger Opus BT C3100 V2.2 -- 4199 mAh. The battery capacity corresponds to the declared
    Happy with the purchase
    Not found yet

    Nov 26,2015

  • Nikola
    KeepPower 4200mAh 26650
    As always perfect cell from Keeppower, came in perfect condition with Sweden post. Precharged to 3,69V . Thanks GB team!!!

    Jul 14,2015

  • Dmitriy
    KeepPower 4200mAh
    Классные литиевые аккумуляторы, живут очень долго, питают высокоамперным током. Своей цены стоят

    Apr 25,2018

  • Oscar
    Very good IMR battery
    genuine battery, works great for direct driving led flashlights for crazy output
    when tested for capacity on my opus bt c-3100 @1A I got 4493 mAh.
    none really

    Dec 01,2015

  • Pieman
    Quality of a KeepPower
    Reliability of a KeepPower.
    Great capacity.
    Value for the price.

    Jul 20,2015

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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 KeepPower 4200mAh 26650 Rechargeable 3.7V IMR Flat Lithium Battery Max 50A 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 ? Please submit your wholesale inquiry below. Please note we usually don’t offer free shipping on wholesale orders, but the wholesale price will be a big bargain.

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