Updated
3/1/2010
Input
Voltage
Max Input
Current
Maximum Charge Power
Output 1 Port
Maximum Charge Power
Output 2 Ports
Simultaneously
LiPo Cell
Count
Maximum Charge
Current/Range
Maximum Discharge Power
1 Port
Maximum Discharge Power
2 Ports Simultaneously
1S 3.7V
20.0A
2S 7.4V
20.0A
3S 11.1V
19.8-20.0A
4S 14.8V
14.8-18.9A
5S 18.5V
11.9-15.1A
6S 22.2V
9.9-12.6A
7S 25.9V
5.4-6.9A
8S 29.6V
4.7-6.0A
1S 3.7V
20.0A
2S 7.4V
20.0A
3S 11.1V
20.0A
4S 14.8V
17.8-20.0A
5S 18.5V
14.2-18.1A
6S 22.2V
11.9-15.1A
7S 25.9V
5.4-6.9A
8S 29.6V
4.7-6.0A
1S 3.7V
20.0A
2S 7.4V
20.0A
3S 11.1V
20.0A
4S 14.8V
20.0A
5S 18.5V
16.6-20.0A
6S 22.2V
13.8-17.6A
7S 25.9V
8.5-10.8A
8S 29.6V
7.4-9.4A
1S 3.7V
20.0A
2S 7.4V
20.0A
3S 11.1V
20.0A
4S 14.8V
20.0A
5S 18.5V
19.0-20.0A
6S 22.2V
15.8-20.0A
7S 25.9V
8.5-10.8A
8S 29.6V
7.4-9.4A
For V3.5+ firmware, before starting the charge process the maximum charge current that can be set (if it's less than 20.0A, which is the max charge current rate for each port) is
automatically calculated by the charger based on the voltage of the input power source and the estimated voltage of the battery being charged based on the cell count you have
selected. This is calculated using the discharged voltage of the battery (i.e. ~3.3V per cell for LiPo batteries) so it is possible to set the charge current rate to the maximum rate possible.
And if you have set the charge current rate to the maximum rate possible, after starting the charge process the charger will automatically adjust the current rate, per the actual voltage
of the battery at any given time, to maintain (and not exceed) the maximum output power level (wattage). For example, in the case of charging a 6S 22.2V 5000mAh LiPo battery and
when using a 27.0-28.0V/35-40A power supply for maximum input/output power, before the charge process has started you will be able to set the charge current rate to 20.0A max.
However, if the battery is currently at more than 20.0V the charger will then adjust the current rate automatically between 20.0A and approximately 15.8A as needed to ensure it does
not exceed the 400W maximum output power level of each port. And when the battery nears/reaches the end of the Constant Current (CC) phase of the charge around 25.2V (4.2V
per cell) the current rate will reduce accordingly throughout the Constant Voltage (CV) phase of the charge process and until the charge is complete.
800W
24V
40A
27V
40A
50W
100W
50W
100W
50W
15V
40A
100W
300W
500W
350W
700W
400W
Thunder Power RC TP820CD Input and Output Power
12V
40A
50W
100W
250W
400W
