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Please also note that due to the high-power charging capabilities of the TP820CD it is not
designed to charge through the balance connectors/leads of LiPo/LiIon/LiFe batteries. These
connectors/leads are typically limited to maximum charge/discharge rates of only 2-4 amps
versus the up to 20 amp charge rate capability of the TP820CD. As a result you MUST connect
the main power AND balance connector leads to the charger in order to charge through the
main power and balance through the balance connector leads accordingly.
The 9-pin Thunder Power type connectors for each balancer are located on the sides of the charger.
When viewing each connector straight on (with the top/face of the charger pointed upwards) the main
ground/negative (–) connector (pin) is located on the far left while the positive (+) connector is located
on the far right. And while it is possible to connect Thunder Power 4-pin and 6-pin balance
connectors from batteries and extensions to these connectors directly (always aligning the main
ground/negative wire to the far left), to prevent any issues with connection location, polarity and
fatigue of the connection between the 9-pin connectors and the charger board internally, we
recommend always using the included balance connector adapter boards instead.
To use the included balance connector adapter boards simply insert the male 9-pin connector into the
female 9-pin connector for each balancer. The connectors are ‘keyed’ to prevent reverse polarity
connection, and each balance connector adapter board is equipped with balance connectors
compatible with all 2S 7.4V to 8S 29.6V LiPo/LiIon/LiFe batteries equipped with Thunder Power and
JST-XH balance connectors. And in the event that you must connect batteries that are not equipped
with TP or JST-XH balance connectors, there are additional balance connector adapter leads (i.e. –
TP to JST-EH, etc.) available from many sources. Please also note that the balance connector
adapter boards are also available separately if needed:
TP8SAB-TPJXH 2S to 8S Thunder Power/JST-XH Balance Connector Adapter Board
The following accessories for Thunder Power balance connectors are also available:
TP4P8 4-Pin Balance Connector w/8" 22GA Color Coded Wires
TP6P13 6-Pin Balance Connector w/13" 22GA Color Coded Wires
TP4P10E 4-Pin Balance Connector Extension w/10" Color Coded Wires
TP6P10E 6-Pin Balance Connector Extension w/10" Color Coded Wires
TP6P4E 6-Pin to 4-Pin Balance Connector Adapter
After connecting the balance connector adapter board to the charger/balancer you can connect the
balance connector from the battery to the appropriate mating connector, ensuring proper keying of the
connectors and polarity, on the board accordingly. And please note that unless you are using the
correct adapters/connections to charge multiple batteries in series and/or parallel (contact Thunder
Power RC directly for more information on series/parallel charging if needed) you must NOT connect
more than one battery to the balance connector adapter board. If you connect multiple batteries
incorrectly or connect one battery with incorrect polarity it is possible to damage the traces and/or the
pins/connectors on the balance connector adapter board (and such damage is not covered under
warranty).
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