6907.1

AA Portable Power Corp.
www.batteryspace.com, Email: Sales@batteryspace.com
825 S 19th Street, Richmond, CA 94804
Tel: 510-525-2328 Fax: 510-439-2808
Specification & Instruction
of
Smart Charger
CH-L74V3
AA Portable Power Corp.
www.batteryspace.com, Email: Sales@batteryspace.com
825 S 19th Street, Richmond, CA 94804
Tel: 510-525-2328 Fax: 510-439-2808
Specification:
Feature
LED Indicator
Safety
Protection
Charging Mode
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Designed for 74V (20S) Lithium ion rechargeable battery with
capacity ≥ 3Ah
Input Power: 100V - 240V AC, 50/60Hz,
Maximum input current: 5A
Output Power: 84V DC, 3A Max, 360W Max
Operating Temperature: -10ºC - 45 ºC
Storage Temperature: -40ºC - 75 ºC
LED always GREEN: Fully charged or not connected
LED flash BLUE: Battery is in charging mode
LED always RED: Charger under protection (Over temperature / Short
Circuit / over voltage)
Over voltage Protection
Short Circuit Protection
Over temperature protection
No Reverse Polarity Protection
Note: Please connect AC power before connect to the battery
Pre-charge Stage (T1): When battery’s voltage is lower than normal
standard, the charger can’t withstand large current charging. The
charger will supply small current for charging, which has functions of
activation, repair and extension of battery’s life. When battery reaches
normal voltage or charger reaches maximum T1 timing period, the
charger will switch to fast charge mode automatically.
Fast Charge Stage (T2): Charger will charge the batteries with a
constant flow. When the battery’s voltage reached the set value, the
charger will switch to Float Charge Stage automatically.
Float Charge Stage (T3): The charging current will reduce gradually.
When the current drips to the set value, or at the T3 of the timing
period, charger will turns off the output voltage automatically. Battery
charging is complete.
Dimension(mm) 184 L x 96 W x 55 H
Weight
3lb 3.2Oz (1450g)
AA Portable Power Corp.
www.batteryspace.com, Email: Sales@batteryspace.com
825 S 19th Street, Richmond, CA 94804
Tel: 510-525-2328 Fax: 510-439-2808
Caution:
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This charger is only for Indoor use.
Reverse connect or short circuit are prohibited during charging.
Avoid storing or operating the charger in highly humid place.
Never cover the air vent, always leave at least 10cm space away from the vent.
Do not cover the charger when the charger is operated. The ambient temperature shall not
excess 40 ˚C
Do not charge the battery on the list below
Voltage < 74V, or Voltage > 74V
Capacity < 3.0Ah
Completely plug the power cord into AC power resource
Do not expose any metal part of the power cord during operation
Do not use your hand or any of your body to touch the metal part of the power when you
connect the power to the charger
Do not disassembly the charger any time.
AA Portable Power is not responsible for any damage caused by any misusage
Operation Steps:
1. First, turn off the Power Switch on the charger
2. Connect the battery to charger, positive to positive, negative to negative
3. Plug in AC Power cord into the AC power resource
4. Turn on Power Switch on the charger
5. The charger begins to working. The charging time is variable depends on the batteries.
6. After battery fully charged, LED always GREEN, disconnect AC Power Cord
7. Disconnect battery and charger
Trouble Shooting:
Failure Mode
LED is not on
Charger is not charging, and the
LED is always GREEN
Charger is not charging, and the
LED is always RED
Battery is not fully charged
Troubleshooting Methods
a. Input connectors must be connected firmly
b. Open Power Switch
a. Output connectors must be connected firmly
b. Battery failure or damage, replace the battery
a. Make sure the output polarity is right
b. Battery voltage is too high and cannot match the
battery charger.
a. Output connectors must be connected firmly
b. Output wire cannot be too long
c. Battery failure or damage, replace the battery