Battery Charging; Transmitter/Receiver; Transmitter Polarity; Charger - Spektrum DX7 User Manual

Battery Charging

Transmitter/Receiver

It is imperative that you fully charge both the transmitter and the receiver battery packs prior to each
flying session. To do so, using the included wall charger, leave the charger and batteries connected overnight
(16 hours).
The charger supplied with this system is designed to recharge your batteries at a rate of 110mA for the
transmitter and 110mA for the receiver battery pack.

Transmitter Polarity

The center pin on all Spektrum
negative. Therefore, the center pin on all Spektrum
chargers is negative, not positive. This is different
from many other manufacturers' chargers and radio
systems. Beware of improper connections based on
"color coded" wire leads, as they may not apply in
this instance. You must make sure that the center
pin of your Spektrum transmitter is always
connected to the negative voltage of your charger
for correct polarity hookup.
CHARGER PIGTAIL FOR TRANSMITTER
CHARGER PIGTAIL FOR RECEIVER
CENTER
PIN IS

Charger

RED–POSITIVE / BROWN–NEGATIVE / ORANGE–SIGNAL
The pilot lamps should always be ON during the charging operation. If they're not, check to make sure that both
the transmitter and receiver are switched OFF. Do not use this charger for equipment other than Spektrum. The
charging plug polarity may not be the same and equipment damage can result. During the charging operation,
the charger's temperature is slightly elevated. This is normal.
10
transmitters is
®
BLACK TO POSITIVE
RED TO NEGATIVE
RIGHT SIDE OF TRANSMITTER
OUTSIDE IS POSITIVE
SPEKTRUM DX7 • INTRODUCTION
CENTER
PIN IS
NEGATIVE
RED–P