18650 Battery Tester And Charger

97% of 100
In stock
Shipping cost around: 13$ to 48$ delivery to Germany
  • Universal battery tester: The battery tester can charge simultaneously rechargeable batteries of different types (18650, 26650, 26500, 22650, 18490, 17670, 17500, 17355, 16340, 14500, 10440, A, AA, AAA, SC sizes) with different sizes.
  • LCD display: Provided with integrated LCD display to monitor the information of the four charging slots. Each battery parameter such as voltage (V), current (mA), time (h), capacity (mAh), internal resistance (mΩ) can be viewed independently by pressing the corresponding digital key. 
  • Multi-charging current: 4 different charge current options to choose from (300mA / 500mA / 700mA / 1000mA). 4 slots work independently, you can select and use the three modes 'CHARGE, FAST TEST and NOR TEST' simultaneously. 
  • Power Bank: The battery tester comes with 5V / 1A USB output function and can be used as a power Bank for charging your phone or tablet.
  • Delivery in 5 days, 2 years warranty.

The BT4 battery tester is a high-end smart charger with 4 independent charging channels. It comes with an LCD display, which will update every second to keep you in the loop on the charging process. The battery tester is able to charge almost all batteries such as cylindrical Li-ion and AA / AAA cylindrical Ni-MH batteries, which are widely used for flashlights, electric toys, power tools, instruments and apparatuses, digital cameras and other electronic products. Safe, portable, multifunctional that it is a good helper for testing or charging your 18650 battery and other batteries indoor or outdoor.

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Main Features

● Different types and different sized of batteries can be tested and charged simultaneously, such as 18650 / 26650 / AA / AAA batteries, etc.
● 4 charging channels feature 4 charging current regulator, 300mA / 500mA / 700mA / 1000mA. Each channel works independently.
● The LCD screen updates every second to keep you in the loop on the charging process
● The fast test mode and nor test mode are available to detect the battery capacity according to your needs.
● Battery short circuit/ over-voltage/ over-current/ over-charging / over-discharging / reverse polarity protection / temperature protection / battery fault detection
● DC input voltage: 12V / 2A
● Car charger input voltage: 12V / 1A
● Power Bank USB output: 5V / 1A

General Type: Battery tester
Charger: DC 12V 2A 
Charging Cell Type: Lithium ion battery, Ni-MH battery, NiCd battery
Workable for almost all batteries: 10440,14500,16340,17355,17500,17670,18490,18650, 22650, 26500, 26650, AA, AAA, SC.
It is a good tool for 18650 battery.
Battery slots: 4 
Input Voltage/ Current: DC 12V / 2A
Output Voltage/ Current: DC 5V / 1A  
Function Fast Charging Function: Yes 
LCD Screen: Yes 
Circuit Detection: Yes 
Protected Circuit: Yes 
Reverse Polarity Protection: Yes 
Short Circuit Protection: Yes 
Over Voltage Protection: Yes 
Over Current Protection: Yes 
Over Charging Protection: Yes 
Over Discharging Protection: Yes
Over Temperature Protection: Yes
Battery Fault Detection: Yes
Dimension and Weight Product weight: 0.300 kg 
Package weight: 0.4500 kg 
Product size (L x W x H): 162 x 96 x 36 mm / 6.38 x 3.78 x 1.42 inches 
Package size (L x W x H): 200 x 110 x 60 mm / 7.87 x 4.33 x 2.36 inches
More Information
Material N/A
Weight N/A
Color N/A
Install way N/A
Rim size N/A
NO. Parts Quantity
1 Smart battery tester  1
2 US/EU charger( optional) 1
3 Car charger (optional) 1
4 Manual 1

About shipment ( Important! )

Please read the following terms before placing an order.

The time showed in the " Shipping Method" means the transport time, not including the handling time which takes 1-7 days usually.

All the packages are shipped without the tarriff or VAT ( except the batteris or electric bike conversion kits)

1. Battery/ Products with battery

Handling time: 3-7 days
Thanks for purchasing our product.
The battery is a special product which needs several cycle tests before delivery, so production and test time need about 3-7 days.

Due to the express shipping regulation of express company for the risky item like the battery, we ship the battery separately from other goods and via special air method to the destination country, then to your door via UPS, FedEx, or some other express company.

Noted! Handling time of E-bike or electric bike kits please check on their product page.


Shipping time

Customs Tax

European Union 

( not include the Colony or dependency islands)

18-35 days ( the UPS or DPD or other Logistics companies could pick it up after completing the customs clearance,  it may take 10-25 days before picking up)


(Delivered Duty Paid for the following countries:

Germany, France, Belgium, Luxembourg, Netherlands,
Denmark, Italy, Czech Republic, Poland,
Austria, Spain, Ireland, Portugal, Sweden)

DDU ( Other countries in European)


 18-35 days

DDP(Delivered Duty Paid)


18-35 days

DDP(Delivered Duty Paid)


 18-35 days 18-35 days ( the UPS or FedEx or other Logistics companies could pick it up after completing the customs clearance,  it may take 10-25 days before picking up)


Service area not included

PO BOX; affiliated islands, remote areas: 006-009;  PUERTO RICO AND VIRGIN ISLANDS; 966-969 HAWAII AND GUAM;995-999 ALASKA,  etc. Customers from these areas please contact us to confirm the cost.


18-35 days

DDU(Delivered Duty unPaid)

Service area not included:

P.O.BOX, military address, Northwest, Territories, Nunavut, Yukon, customers from these areas please contact us first to confirm the cost.

South Africa

18-35 days

DDP(Delivered Duty Paid)

Australia, New Zealand

18-35 days

DDU(Delivered Duty Unpaid)
NO tax declare value;AU < AUD1000; NZ<USD300

Malaysia, Thailand

15-30 days

DDU(Delivered Duty Unpaid)


15-30 days

DDU(Delivered Duty Unpaid)


15-30 days

DDU(Delivered Duty Unpaid)


 15-30 days

 DDP(Delivered Duty Paid)

Service area not included
Hokkaido; Okinawa; Fukushima, Radiation Control Area.

We only ship battery/ products with battery to the above countries at present. But we will try our best to add channels to more countries in the future.




2. Other products

Handling time

3-7 days

You can choose the shipping way when you checkout and see the shipping items.

 Please note: VAT, tarriff or taxes or duty or charges are not included in the item price or postage cost. These charges are the buyer's responsibility.

Usually, we will declare a reasonable minimum value to save your customs tax. But due to the different policies in different countries, the customs may ask you to pay the tax.

Ship via ChinaPost

10-30 days

Express company

5-10 days


We understand the importance of the right product and the right fit, we sincerely want you to love your items. To make a return, please follow these guidelines:


Defective item

If an item is defective when you receive it, it will need to be returned to us for a full inspection to ensure it is covered by the warranty. To return a faulty item please follow the procedure below:

To qualify for a return:

Returns will be accepted within 15 days after you receive the product. 

The item(s) must be in new with original packaging.

The damaged item even following the regular operation.

Proof of defective item required.


Items not acceptable by return:

The item was not purchased from ELECYCLES.

The item is unclean.

The item was damaged by improper use or damaged in an accident.


Once the product has been returned to us and has been ascertained as complete and undamaged (including the “original sealed” product box including its original packing materials) your purchase price, and original shipping will be refunded to you. We do not refund any applicable tax. Note that if the product is defective through no fault of your own, you may either request a repair or an exchange.


All returns:

Refunds, including original shipping, will be refunded to the credit card account/ corresponding account used for purchase within 30 days after the return is received. A refund will be applied to the original card used in the transaction.

If an item is returned that does not meet the above criteria, the return will be declined and the item returned to you.


Please noted

1. For the electric bikes or ebike kits or the electric wheelchair or the electric handcycle, shipping fees to return the items are at the customer's own expense.

2. Please consult your local post office to confirm the actual return shipping fee. We advise you use the cheapest registered airmail method that is available.


Wrong item

If we have accidentally sent you the wrong item, you do as below.

A. If the wrong item is acceptable, you could ask for a special offer for this item, the difference would be refunded to your account.

B. You could request the return. The purchase price and original shipping will be refunded.

C. Please contact us if you have any other query or request.


Unwanted item / no faulty

If you have changed your mind on your purchase, please contact us.


If you have any questions regarding your purchase or its warranty, please chat with us one line or email to [email protected]

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