7
SPECIFICATIONS
Type
: Dual Port Multi-Chemistry DC Charger/Discharger/Cycler with Integrated Balancers
Battery Cell Counts/Types (Per Port)
: 1-8S LiPo/LiIon/LiFe (A123), 1-24 cell NiCd/NiMH and 6-30V
Pb (lead-acid)
Balancer (Per Port):
Integrated for 2-8S LiPo/LiIon/LiFe (A123) with balance connector adapter
board for Thunder Power and JST-XH connectors
Input Power:
10.5-28.0V DC (40 amps max)
Charge Power:
800 watts max (400 watts max per port) w/24.0-28.0V input (see later in this manual
for additional information regarding input and output power)
Charge Current (Per Port)
: 0.2 to 20 amps in 0.01 amp increments
Charge Voltage:
50% storage and adjustable end voltage for LiPo/LiIon/LiFe (A123), adjustable delta
peak sensitivity and end voltage for NiCd/NiMH and end voltage for Pb (Lead Acid)
Discharge Power:
100 watts max (50 watts max per port)
Discharge Current (Per Port):
0.2 to 10 amps in 0.01 amp increments
Discharge Voltage:
Adjustable low voltage cutoff for LiPo/LiIon/LiFe (A123), NiCd/NiMH and Pb
(lead-acid)
Cycles:
1 to 15 times with data stored for all cycles
Memories:
24 user-programmable
Firmware:
User-updatable using USB
INPUT POWER SOURCE AND CONNECTION
The TP820CD (charger) is designed and built to be powered from a 10.5-28.0V DC power source.
This can include a single 12V Pb/lead-acid battery, two 12V Pb/lead-acid batteries connected in
series for 24V or a quality AC to DC power supply with stable 10.5-28.0V DC output.
Input Current Max
The maximum input current can be set from 10.0-40.0A in order to prevent damage to the power
source and/or charger. This means you can limit the maximum current the charger can pull from the
power source per the maximum capabilities of the source as needed. For example, if you are using a
power supply that is capable of outputting 25.0A max you should adjust the Input Current MAX setting
to 25.0A to ensure the charger is not able to pull more than 25.0A from the power supply. You can
adjust this setting in the charger by powering it on and pressing the MODE button once to scroll to the
Setting Data (Settings) menu, then press the + or – buttons to scroll to the appropriate menu and
adjust the setting accordingly. Or, in order to obtain maximum output power (per input voltage) for
charging, you must use a power supply capable of delivering up to 40.0A.
Input Power Low Voltage Cutoff
You can also set the Input Power LVC (Low Voltage Cutoff). This is the input voltage at which the
charger will stop charging/discharging in order to prevent overloading/over-discharging the input
power source. This is particularly beneficial when charging from a 12V Pb/lead-acid car battery as it
allows you to maintain enough voltage/power in the battery to still start the car after using the charger.
You can adjust this setting in the charger by pressing the MODE button once to scroll to the Setting
Data (Settings) menu, then press the + or – buttons to scroll to the appropriate menu and adjust the
setting accordingly. We recommend setting this value to between 10.5V and 11.0V for typical use, or
