These are two of the battery checkers that I use most often. The small one, a CellLog 8S, fits easily
into a pocket, so I always have it on hand. The larger one, a MaxPro LCD- 6, stays in the charger case.
Both show individual cell voltages as well as the total battery voltage.
How Many watts Do you neeD?
To determine if a charger is suitable for your
application, you must perform this calculation
to determine the maximum amp rate the
charger can supply: Start by dividing the watts
of the charger by the voltage of the battery
pack. This will tell you the maximum amp rate
the charger can deliver (watts/voltage = amps).
For an example, we have a 6S LiPo battery
pack and a charger that delivers 100 watts to
the charging port (keep in mind that a 100-watt
charger with two charging ports might only
deliver 50 watts per port). Divide 100 watts by
22.2 volts ( 6 cells) and you get 4. 5 amps. This
means that the charger can supply a maximum
of 4. 5 amps to a 22.2-volt 6S battery.
Of course, the charging amp rate would
gradually reduce as the battery voltage
increases during the charge cycle. In this
example, you could only charge a 6S 4500mAh
battery at a 1C charging rate. Any battery larger
than that would be charged at less than the 1C
rate, which means it might take a little longer
depending on the discharge of your battery.
With today’s balancing-charger designs,
charging a LiPo battery can be a safe and
stress-free process. Just remember to read the
battery label and keep in mind that a 1C rate is
usually a safe bet. K
-> Do not;leave;the;battery;in;your;model;when
-> Do not;leave;the;battery;unattended;when
-> Do not;overdischarge;the;LiPo;battery;pack.
Here an iCharger 306B display shows individual cell voltages as the charge
progresses. When these get to 4.2 volts, the charge process is complete.
Here is the iCharger 306B display before the charge begins. It shows the charging
method in the top line and the selected charge current, battery voltage, and cell
count in the bottom.
Here is the iCharger 306B display after the charging process starts. There’s a
lot of information there, including charge current and pack voltage up top with
accumulated charge in mAh and elapsed time at the bottom.