Why do you need this and a bms? the bms is supposed to balance as well?

Most BMS will only balance while the batteries are charging. The active balancer works all the time. It takes current from a battery with high voltage and sends it to a battery with lower voltage.

can the 20s also be used for a 14s and 16s battery and Lifepo4 and LI

I cannot say for sure-- but I wouldn't think so. The unit comes with the number of leads to match the cells and I don't believe it would function correctly without the same number of battery cells connected.

Will this balancer work without a BMS?

Yes it will. You can actively monitor the state of your battery via blue tooth app and it works quite efficiently. Good for older out of balance battery packs.

Why does daly balancer show diferent voltage on the app from my original bms? Some times in 30 mV diference

Probably the accuracy of the voltage reading. These are not "industrial grade" instruments. they are consumer level. A 30mV difference is not too big and nothing to be concerned over.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

DALY Smart Active Balancer 4S 1A with Bluetooth for LiFePO4 Li-ion

Product ID: 472961877

Details

Brand
DALY
Color
Smart Active
Input Voltage
3.7 volts
Item dimensions L x W x H
2.36 x 1.38 x
Output Voltage
3.7 volts

⚡0.1-1A balanced current

📶Bluetooth real-time monitoring

🔋0.01V voltage equalization accuracy

€ 57.71

Duties & taxes included

In stock

Sold byAmazon BelgiumDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Belgium.

Secure transaction

Description

🔋 Stay balanced, stay ahead — power perfected.

RELIABLE SUPPORT ALWAYS - 24-hour online service guarantees expert help whenever you need it—no downtime, no worries.
SEAMLESS 24 7 BALANCING - Works continuously regardless of charging or discharging state—your battery’s silent guardian.
UNIVERSAL COMPATIBILITY - Plug & play with any BMS brand for Li-ion and LiFePO4 battery packs—flexibility meets power.
SMART BLUETOOTH INSIGHTS - Monitor battery health anytime via app with real-time data and intuitive alerts.
PRECISION ENERGY TRANSFER - Advanced DC-DC tech ensures ultra-efficient balancing with minimal heat loss.

The DALY Smart Active Balancer 4S 1A is a cutting-edge battery equalizer designed for Li-ion and LiFePO4 packs. Featuring high-precision voltage equalization (0.01V accuracy) and balanced current up to 1A, it uses efficient DC-DC energy transfer to extend battery life with minimal heat generation. Its 24/7 intelligent balancing operates independently of charging cycles, while Bluetooth connectivity offers real-time monitoring and diagnostics via a dedicated app. Compatible with any BMS brand, it ensures universal adaptability backed by 24/7 customer support.

Specifications

ASIN	B0B5LJY981
Best Sellers Rank	#12,503 in Musical Instruments ( See Top 100 in Musical Instruments ) #6 in Equalizers & Feedback Controllers
Brand	DALY
Color	Smart Active Balancer
Customer Reviews	3.8 3.8 out of 5 stars (34)
Input Voltage	3.7 volts
Item Dimensions	2.36 x 1.38 x 0.7 inches
Item Highlight	Battery Equalizer.
Manufacturer	Dongguan Daly Electronics Co., Ltd
Mfr Part Number	AB-1
Model Number	4S 1A B0B5LJY981
Number of Items	1
Output Voltage	3.7 volts
Plug Type	Type A
UPC	768655913440
Unit Count	1 Count

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.