hours required to recharge the battery. For example, a 50 AH (12-volt) battery is
discharged to 10 volts. How long should it be charged at the 12-amp rate? Divide the 50
AH by 12 A. The answer is approximately 4 hours. Always round up the charge time by
25% to ensure full charge. In most cases, battery recharge times will vary depending on
the age and condition of the battery. Smaller batteries should be charged at the lower
rate (2 amps) and add an extra hour to charge time.
Engine Starting
The engine start function can supply up to 75 amps of current during engine starting. This
function is protected by an automatic reset protector, and there is a 5-second limit at this
output level.
Do not make battery and chassis connections with the Battery Charger connected
to AC power.
1. Check polarity of battery terminals - For top-mounted battery connectors, the positive
terminal (marked POS, P, +) usually has a larger diameter than the negative battery
terminal (marked NEG, N, –). For side-mounted battery connections, the positive
terminal is red, the negative terminal is black.
2. Attach charger clamps to battery connections, as follows, ensuring a good connection
(if there is a mistake, the Reverse indicator will light) when the Battery Charger is
plugged in:
For Negative-Grounded Vehicles:
Connect the positive (RED) charger clamp to the
positive (POS, P, +) ungrounded battery terminal. Then, connect the negative (BLACK)
charger clamp to the vehicle chassis, or the engine block (away from the battery).
NOTE: Do not connect the charger clamp to the carburetor, fuel lines or sheet metal body
parts: connect only to a heavy gauge metal part of the frame or engine block.
Negative-grounded type systems are the most common in today’s vehicles.
For Positive-Grounded Vehicles:
Connect the negative (BLACK) charger clamp to the
negative (NEG, N, –) ungrounded battery terminal. Then, connect the positive (RED)
charger clamp to the vehicle chassis or engine part (away from the battery). Do not
connect the charger clamp to the carburetor, fuel lines or sheet metal body parts: connect
only to a heavy gauge, stable metal part of the frame or engine block.
3. Connect the Battery Charger’s power cord to a 110/120-volt AC power outlet, and
select the charge rate button to “12V/75A”.
4. The digital display will show the battery’s voltage, and the battery charge will charge
the battery with a current around 5A automatically, until you start cranking your
engine.
5. Immediately crank the engine in 5-second bursts until the engine starts with a rest
time of 3 minutes between each burst.
Do not crank the engine for more than 5 seconds at a time.
6. The Battery Charger allows 5 seconds maximum for each attempt, and then stops
automatically for rest for 180 seconds. During the 180 seconds, the engine start
function will be locked, and the digital display will count down. And during this period,
the Battery Charger will continue charge the battery with 5A.
7. Once the engine starts, disconnect the Battery Charger plug from the 110/120-volt AC
power outlet.
8. Disconnect the cables and clamps in the reverse order in which they were connected.
Disconnect your first cable as far away from the battery as possible.
Rev. 20151217
