26
For LiPo batteries, and LiIon batteries with a nominal voltage of 3.7V per cell (and full charge
voltage of 4.2V per cell)
, you can set the charge end voltage up to 4.24V per cell. And although the
maximum recommended charge end voltage per cell is 4.235V, due to slight variations in the
components and calibration of each charger, resistance of charge leads and cells/batteries, ambient
conditions and more, it is possible that when the value is set to 4.24V it will not actually exceed
4.235V per cell when checked with a calibrated Digital Volt Meter (DVM). We first recommend
charging with the value set to 4.20V per cell then checking the actual voltage per cell with a calibrated
DVM (DO NOT use a non-calibrated DVM for this check as it can read the voltage too high or too low
and cause you to adjust the value incorrectly). If the voltage of each cell is between 4.19V and 4.21V,
we suggest leaving the setting as is. Or, if the voltage is even higher or lower you can adjust the
value +/– 0.01V and test again until you achieve the desired charge end voltage for your particular
charger and batteries (and again, this is adjusted independently per port and per memory profile for
each port).
Please note that this adjustment is to allow for advanced fine-tuning/calibration of
the charge end voltage, however, if you do not have a calibrated DVM and/or experience with
this type of checking and tuning we suggest leaving the value at 4.20V per cell regardless.
For LiIon batteries with a nominal voltage of 3.6V per cell, or if you’d like to charge your LiPo
batteries to approximately 90% charged in order to extend their cycle life and shorten charge
times,
typically the recommended full charge voltage is 4.1V per cell. This in mind you can use the
LiPo Charge Mode and charge end voltage setting, adjusted to 4.10V, to charge the appropriate LiIon
batteries (or LiPo batteries to approximately 90% charged) accordingly.
LiFe batteries typically have a recommended full charge voltage of 3.60V per cell
. However,
you can set the charge end voltage up to 3.80V per cell for the same reasons as noted for LiPo
batteries above. Also, please note that this adjustment is to allow for advanced fine-tuning/calibration
of the charge end voltage, however, if you do not have a calibrated DMV and/or experience with this
type of checking and tuning we suggest leaving the value at 3.60V per cell regardless.
For Pb/Lead-acid batteries, we suggest setting the charge end voltage to the value per cell
recommended by the battery manufacturer (as these values do vary from manufacturer to
manufacturer). However, a value of approximately 2.25-2.30V per cell (~13.5-13.8V for a typical 6S
12V battery) is typically a safe, conservative value for all Pb/lead-acid batteries.
For NiCd/NiMH batteries you will typically use the Delta Peak Sensitivity value, set in the Charge
Mode, to ensure proper peak/full charging of the batteries accordingly. However, in case you set the
delta peak sensitivity value too high, you can also set the charge end voltage to complete/finish the
charge process instead. In this case we suggest setting the charge end voltage value to 1.60-1.80V
per cell because if the value is set too low it will not allow for proper peak/full charging of the batteries.
Power Distribution
When using an input power source that is only capable of supplying less current than the 40A
required for maximum power (wattage) output per a given input voltage you can adjust the distribution
of power between the ports to achieve up to max power from a single port (as the actual input voltage
and current allow) rather than splitting it evenly and between both ports (as is the case with the default
setting of 50% and 50%).
For example, with an input power source that supplies 12V and 30A max under load, if the Power
Distribution is set to 50% and 50%, the maximum wattage available from each port will be
approximately 150W max (300W total). However, because each port is capable of up to 250W max
with 12V input, you can actually bias the power distribution to give one port more power versus the
other in order to achieve the 250W max for one and 50W for the other (achieving the same 300W total
but with more/max output power capability for one of the ports). This is particularly useful if you need
