12V 4S Battery Voltage-Amperage Balancers/Equalizers for Lithium Batteries

Up to 4 Amps (4000mA) Continuous Balancing!

Battery AH 50-1000!

Unlimited Cell Count

LiFePO4-LiMn2O4-NiMH-Li-Ion-Polymer-Lithium

Balances during charge, discharge, and storage

12V 4S Battery Voltage-Amperage Balancers/Equalizers

Keeps Your Batteries Voltage difference Within 10mV!

*(x3) each in ECPC.com Stock (USA)*

*International Stock/Production Available (No Minimum Quantity)

Click here to view a short video of the balancer in action

Click here to see the balancers connected to batteries

Why you need a Battery Balancing System

The individual cells in a battery pack are rarely an exact duplicate of all the cells in the battery pack.

In actual practice, when a pack of batteries reaches a specified charge cutoff voltage then the charger will shut off. If one cell in a pack reaches that voltage before other cells reaches a full charge it will cause the charger to shut off – prematurely denying the balance of the pack a full charge.

Conversely, when the weakest cell in a pack reaches its discharge cutoff voltage it will show as the discharge point and shut down the pack prematurely – thereby denying the user the balance of energy the other cells have stored.

These battery equalizers prevent this from happening. This yields up to 30% more power and will extend the life of the battery pack.

Benefits:

§ Quick and easy installation

§ Keeps your batteries voltage difference within 10mV!

§ May increase the lifespan of your battery pack by 2-3 times by preventing the batteries from being overcharged or over-discharged

Features:

§  High-frequency pulse, dynamic battery voltage-amperage balancer

§  Simple wiring and high efficiency

§  Works with all charger amperage and voltage inputs

§  All 1S Single Balancers come with the interconnecting and battery wiring

§  0.5m/1.5ft maximum suggested wire length for all the multiple series balancers. (35m 4S, 5S, 6S, 8S)

§  Idle Current Draw is <50mW

§  Series modules

·       Modules may work with 3, 4, 5, 6, or 8 batteries in series (AKA 3S, 4S, 5S, 6S, or 8S)

·       Does not come with the wiring to connect to the batteries

Example:

A 144v pack of 48 cells,

20 in the front and 28 in the back

can use 8S+8S+4S in front

and 8S+8S+8S+4S in the back.

Single User Manual

3-8S User Manual

BMS Fundamentals Explained

Note: This balancer emits a very high-frequency tone that some people can hear if they are within 10 feet.

Note: Please check the wiring diagram for how to connect these modules or contact us to avoid making mistakes during installation. Here are several ways to make sure they are installed correctly:

1. Measure the voltage of the batteries with a multi-meter to see if all the batteries voltage is normal.

2. Listen. If the balancers are connected correctly, they will produce a high-frequency sound. Because the sound is quiet, you need to get close to the balancers. The more balanced the batteries are, the smaller the balance current it will have, and the softer sound they will make and vice versa. If they are connected the wrong way, you won’t be able to hear the sound.

Sizes (Length * Width * Height):

§  1S single cell:

o   3.1 * 1.5 * 0.8 inch – 80 * 38 * 21 mm

§  3S Module:

o   4.7 * 2.7 * 1 inch – 120 * 70 * 25 mm

§  4S Module:

o   5.9 * 2.7 * 1 inch – 150 * 70 * 25 mm

§  5S Module:

o   7.5 * 2.7 * 1 inch – 190 * 70 * 25 mm

§  6S Module:

o   8.7 * 2.7 * 1 inch – 220 * 70 * 25 mm

§  8S Module:

            o   11 * 2.7 * 1 inch – 280 * 70 * 25 mm

Why should I use the balancer?

1. Keeps your batteries voltage difference within 10mV!

2. Keeps your batteries safe all the time. No overcharging or over-discharging.

3. Prolongs your battery lifespan 2~3 times

4. Very simple installation

5. Low price. You pay a small amount of money to protect your battery. Compare to the cost of replacing your expensive lithium battery, the balancer is very cheap.

6. Fast delivery. 1~2 business days after payment arrival.

How does the balancer work? How does it protect batteries?

This diagram tells you how the balancer works.

Each battery is compared to a cup.

Each balancer is like a pump. With the pumps, all the cups will have the same level of water.

The balancers are connected in parallel to the batteries.

They won't affect the charging or discharging of batteries.

Quantity discounts show in the “Shopping Pallet”.

We love to meet or beat any competitor’s price!

Contact us with questions

9am-5pm Monday-Friday (mountain time)

(801) 566-5678

or email

[email protected]

or through our Contact Us page