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3.7V 4.2V 7.4V 12V 16.8V 24V 36V Lithium Battery Capacity Indicator 1S 2S 3S 5S 10S Power Level Meter LED Display Li-ion Tester

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1S 4.2V Lithium 2S 7.4V Lithium 3S 12V Lithium 4S 16.8 Lithium 6S 22V Lithium 7S 24V Lithium 10S 36V Lithium
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If you want documents or have any other questions , contact us ~

it can programmed to any of the specified voltages 8-65V 

Enter programming mode:
First, please read the instructions thoroughly after trying to enter
Second, the programming mode can be customized battery 0% no voltage, 100% full voltage, set after the 8 LED will be in the
Set the voltage range automatically assigned, can be flexibly applied to any battery
Third, before entering the programming mode, please be ready to adjust the voltage power supply
Fourth, for example: ready to set 9V-12V for the light interval
Press and hold the switch, the instrument power supply, 2 seconds after the release switch, automatically enter the set interface
1, the first red light flashes to indicate success
2, set the 0% voltage, the adjustable power supply voltage is set to the required voltage 9V
3, the voltage is stable, click the switch to save the first, the second red light is always lit, save the seventh blue light after the success of flashing
4, set 100% voltage, the adjustable power supply voltage is set to the required voltage 12V
5, the voltage is stable, click the switch to save, save all the lights are lit all the lights
6, the product has been in accordance with the set parameters work

the button will be hold pressed while the energy is off.

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How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.


Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


Your satisfaction is our #1 priority. Therefore, if you’d like a refund you can request one no matter the reason.

If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.
If you received the wrong item you can request a refund or a reshipment.
If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
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  • Other exceptional circumstances outside the control of

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

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