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.

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Daly Battery Equalizer 4S 1A with Bluetooth App and Wire Leads and Compatible Active Balancer for Lithium Battery Rated 3.7V 3.2V 2.2V

Daly Battery Equalizer 4S 1A with Bluetooth App and Wire Leads and Compatible Active Balancer for Lithium Battery Rated 3.7V 3.2V 2.2V

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

⚡1A balanced current output

📶Bluetooth app real-time monitoring

🔋Voltage equalization accuracy 0.01V

€ 59.49

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Description

🔋 Stay Balanced, Stay Ahead: Power Perfected with Smart Precision

SMART 24 7 BALANCING - Continuous, intelligent balancing anytime—charging, discharging, or idle—maximizing battery lifespan.
UNIVERSAL COMPATIBILITY - Works flawlessly with any BMS brand and supports Li-ion, LiFePO4 battery packs for versatile use.
PRECISION BATTERY HARMONY - Achieve ultra-accurate voltage equalization with 0.01V precision for peak battery health.
COOL EFFICIENT OPERATION - High-efficiency energy transfer minimizes heat and energy loss, keeping your system safe and reliable.
SEAMLESS BLUETOOTH CONTROL - Monitor and manage your battery status remotely via intuitive Bluetooth app integration.

The Daly Battery Equalizer 4S 1A is a cutting-edge active balancer designed for lithium battery packs (3.7V, 3.2V, 2.2V). Featuring ultra-precise voltage equalization (0.01V), continuous 24-hour intelligent balancing, and Bluetooth app connectivity for real-time monitoring, it ensures optimal battery consistency and extended lifespan. Compatible with any BMS brand and engineered for high efficiency with minimal heat generation, this compact device is a must-have for professionals demanding reliable, smart battery management.

Specifications

ASIN	B0B5LJY981
Best Sellers Rank	#170,838 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #719 in Power Converters
Brand	DALY
Color	Smart Active Balancer
Customer Reviews	3.6 3.6 out of 5 stars (31)
Input Voltage	3.7 Volts
Item Dimensions	2.36 x 1.38 x 0.7 inches
Manufacturer	Dongguan Daly Electronics Co., Ltd
Mfr Part Number	AB-1
Model Number	4S 1A B0B5LJY981
Output Voltage	3.7 Volts
Plug Type	Type A
UPC	768655913440
Unit Count	1 Count

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€ 59.49

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered 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 Austria.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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