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CHARGING A LiPo BATTERY
6
MULTI-CHEMISTRY AC PEAK DETECTION BALANCE CHARGER
The Radient Primal charger supports charging of LiPo batteries using Constant-Current Constant-Voltage (CC-CV) charge mode for 2s-3s cell
configurations with available charge current range from:
• 0.5-4 Amps for 2s (7.4V) configuration
• 0.5-4 Amps for 3s (11.1V) configuration
› NOTE: Your charger is equipped with a safety shut-off timer set to 120min. Charging of batteries with capacity higher than 5000mAh
may require a greater charge time and thus require more than one charge cycle to achieve full charge. It is always recommended to
allow your battery to cool to room temperature before charging either the first or second time.
To charge a LiPo battery in CC-CV charge mode, perform the following steps:
1. Connect your LiPo battery’s balance plug connector to either the JST-XH (2s or 3s) balance port built into the charger or into a connected
external balance adapter board (RDNA0003 for example).
a. NOTE: Charging of LiPo batteries on LiPo mode without connecting the balance connector is not supported. As an added feature
to our Safe Start technology, if a balance plug is detected by the charger, use of the NiMH charge mode is disabled and cannot be
circumvented.
2. Connect the main charging leads to your battery.
a. NOTE: it is critical that the battery always be connected with the correct polarity, Negative (-) = Black, and Positive (+) = Red. Only
connect Like color and symbol together.
3. Select the appropriate charge current for your battery by pressing the ‘Amps’ button repeatedly until the desired charge current is selected,
indicated by the row of glowing RED LEDs. For 0.5A, the 1A LED will flash, for 1A, only the 1A LED will glow, for 1.5A, the 1A LED will glow
and the 2A LED will flash, for 2A, both the 1A and 2A LEDs will glow. The pattern continues through 4A at which time another button press
will cycle around to 0.5A again.
a. WARNING: Selecting the appropriate charge current is critical to the safe charging of your batteries.
To achieve the safest operating conditions and longest life from your batteries it is recommended to
charge your batteries at no more than 1C. See the Index at the back of this manual for charge rate
calculations.
i. Note: Although you may select charge currents up to 4A, the maximum final charge current may be reduced as needed to
keep the charger operating within safe limits. Typically this occurs when charging a 3s LiPo at 4A.
01). Example: A 3s LiPo may start to charge at 4A but as the voltage of the battery increases the charge current will
reduce to approximately 3A.
ii. Utilizing this method of charge current control enables the charger to always try to charge your battery as close as possible
to the setting you specify, while keeping the system within safe operating limits.
b. You have 30 seconds from the last ‘Amps’ button press, to start the charge cycle. After 30 seconds the charger will reset to the
default of 1A charge current.
4. Press both the Safe Start and LiPo buttons at the same time and hold for 3 seconds to start the charging cycle. The center ‘Status’ LED will
change to solid RED.
a. NOTE: If the LED begins to flash RED or if the charger is unresponsive to your input, see the troubleshooting guide at the back of this
manual.
5. Near the end of charge completion the LED will flash GREEN, indicating the charger has entered Constant Voltage (CV) mode, the battery is
typically 80% charged at this point.
6. When the charge is complete, the LED will glow solid GREEN. The LED will glow solid GREEN until the battery or AC power is disconnected.
a. NOTE: If the charger encounters an error throughout the start or charging process, the center ‘Status’ LED will flash RED. See the
trouble shooting guide at the back of this manual for possible solutions.
7. Pressing the ‘Safe Start’ at any time while charging will STOP the charge cycle.