Guide to Battery Balancing
This is a guide we’ve put together that explains how Battery
Balancers work and what improvements are made to the lithium batteries when
they are properly balanced. More information can be found under “How
the GNE Balancer Works” and “Specification
of Battery Balancer” on our website. Please give us your questions and
comments about this guide!
How the Balancer
Works to 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 because the water will flow from the higher
cups to the lower ones. The balancers are connected in parallel to the
batteries. They won’t affect the charging or discharging of the batteries.
All battery balancers connected to a battery pack interact with
each other; not just the neighboring balancers. Suppose there are 4 cells of
the following voltages: 3.1V, 3.2V, 3.3V, and 3.4V. Power will be transferred
from 3.4V to the other batteries. The lower batteries will be charged by the
higher ones. Finally they will reach the same level.
What
Happens to Batteries When They Aren’t Balanced?
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 reach 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.
The battery equalizers prevent this from happening. This process yields
up to 30% more power and will extend the life of the battery pack.
Five Advantages
of Using a Battery Balancing System
1.
Keeps your batteries voltage difference within 10mV!
2.
Keeps your batteries safe all the time with no overcharging of
over discharging.
3.
Prolongs your battery lifespan 2~3 times.
4.
A very simple installation.
5.
A 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.
How to tell
if the Battery Pack Balancers are Correctly Installed
Measure the voltage of the batteries with a multi-meter to see if each
of the batteries voltage is normal.
Listen to the balancers. If they 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.
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