What payment methods are available on Joom?

Joom supports a wide range of local and international payment methods for European shoppers, including debit and credit cards (Visa, Mastercard, Maestro), PayPal, Apple Pay, and Google Pay, plus country-specific options such as Klarna, BLIK, Multibanco, MB WAY, SEPA, and Giropay. Available options are shown at checkout and vary by country.

Can I pay for an expensive purchase in installments or later?

Yes, buy-now-pay-later services such as Klarna and Scalapay are available for some higher-value purchases, depending on your country, order amount, and the provider's terms.

Can I track my order?

Yes. You can follow its delivery status in the Joom app or on the website, updated as the package moves.

What happens if my order doesn't arrive?

Every order is covered by Joom Delivery Guarantee. If your order doesn't arrive by the guarantee date shown in your order details, contact Joom support and we'll issue a full refund.

Is it safe to pay on Joom?

Yes. Joom uses a secure payment system, and the seller isn't paid until you've received your order, which adds an extra layer of purchase protection.

What if my order doesn't arrive or the product isn't as expected?

If your order wasn't delivered, arrived damaged, or doesn't match its description, contact Joom support — a full refund can be issued in these cases.

How do I request a refund?

Requesting a refund is quick and straightforward. Just head to your order in the Joom app or website, open the Support Chat, and let us know what happened. Our team will take it from there and get back to you with a resolution as quickly as possible.

Bms 2S 3S 4S Active Balancer Board 1.2A Lifepo4 Lipo Li-Ion Lithium Battery Energy Transfer Equalizer Module Inductive Version

Name: Bms 2S 3S 4S Active Balancer Board 1.2A Lifepo4 Lipo Li-Ion Lithium Battery Energy Transfer Equalizer Module Inductive Version
SKU: 6adeef205b4eab014db26fb8
Price: 3.63 EUR
Availability: InStock

Current price

From Price €3.63

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Free delivery to the United States

2 November

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Description

Precautions

This board is based on the principle of adjacent equalization and cannot be used as a maintenance tool. To connect to the battery, it must be used with the lithium battery protection board. The pressure difference generated by charging and discharging triggers the work of the equalization board to achieve energy transfer and balance. Inductive energy transfer balance board, high current 1.2A energy transfer battery voltage balancer, significantly balance the battery voltage and improve the overall use efficiency of the battery pack!

Inductive working principle

This module is the adjacent voltage difference equalization, the adjacent battery voltage difference reaches more than 0.1V, the chip internal triggers the equalization work, until the adjacent battery voltage difference is within 0.03V and stops working, when it is used on the battery pack, there is adjacent voltage difference when charging and discharging Triggering the equalization work, the battery pack voltage error will also be pulled back to an ideal value, reducing battery maintenance costs.

Wiring Definition

B-: The total negative pole of the battery pack (the negative pole of the first battery) B1: Positive pole of the first battery B2: Positive pole of the second battery B3: Positive pole of the third battery B4: Positive pole of the fourth battery B. . . . . . N+ and so on

Notice: More than 13 series cable plugs need to be inserted obliquely, first contact the B- pin and insert it obliquely upward, otherwise it may cause the board to burn.

Technical Parameter

1. Working voltage: 2.0V-4.5V

2. Universal ternary iron lithium battery

3. LTO battery is not applicable! ! !

Balance Instructions

1. When the equalization light is on, the equalization work is turned on

2. The equalization light is off, and the equalization circuit is in sleep state

3. The equalization light flashes, indicating that the string is dropped, or the circuit is faulty.

Balance current

1、The adjacent voltage difference is more than 0.1V (the current is about 0.5-0.7A)

2、Adjacent voltage difference is more than 0.2V (maximum equilibrium current is 1.2A)

3、The smaller the voltage difference, the smaller the equalizing current. The merchant warrants that their products comply with all applicable laws, and are offered only if they comply with Joom's policies and EU Product Safety and Compliance laws.

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Frequently asked questions

What payment methods are available on Joom?
Joom supports a wide range of local and international payment methods for European shoppers, including debit and credit cards (Visa, Mastercard, Maestro), PayPal, Apple Pay, and Google Pay, plus country-specific options such as Klarna, BLIK, Multibanco, MB WAY, SEPA, and Giropay. Available options are shown at checkout and vary by country.
Can I pay for an expensive purchase in installments or later?
Yes, buy-now-pay-later services such as Klarna and Scalapay are available for some higher-value purchases, depending on your country, order amount, and the provider's terms.
Can I track my order?
Yes. You can follow its delivery status in the Joom app or on the website, updated as the package moves.
What happens if my order doesn't arrive?
Every order is covered by Joom Delivery Guarantee. If your order doesn't arrive by the guarantee date shown in your order details, contact Joom support and we'll issue a full refund.
Is it safe to pay on Joom?
Yes. Joom uses a secure payment system, and the seller isn't paid until you've received your order, which adds an extra layer of purchase protection.
What if my order doesn't arrive or the product isn't as expected?
If your order wasn't delivered, arrived damaged, or doesn't match its description, contact Joom support — a full refund can be issued in these cases.
How do I request a refund?
Requesting a refund is quick and straightforward. Just head to your order in the Joom app or website, open the Support Chat, and let us know what happened. Our team will take it from there and get back to you with a resolution as quickly as possible.