Frequently Asked Questions - Projecta HP900 User Manual

FREQUENTLY ASKED QUESTIONS

Q. How do I work out how long my appliance will run from the Jumpstarter?
A. When the jumpstarter is fully charged the battery will be able to provide 17 Amp hours
(HP900) and 22 Amp hours (HP1200) of power. If you have an appliance that uses
2.5 Amps and you use it for one hour, you have just used 2.5 Amp hours.
For example:
The HP1200 has a 22Ah battery and you are powering a small TV drawing
approximately 2.5 Amps.
Equation: 22 Amp hours ÷ 2.5 Amps = 8.8 Hours (9 hours)
Q. Why does my jumpstarter take so long to charge from my vehicle?
A. Car Cigarette Lighter sockets usually are connected to the battery with small (light)
cable. This small cable when charging the jumpstarter is not adequate and generates
'voltage drop'. This voltage drop increases the time it takes to charge. To help fix this
problem upgrade the cable between the battery and the cigarette lighter socket.
Q. When I use the 12 Volt DC sockets the appliance does not work?
A. Check to make sure the appliance does not exceed the rated current of the socket used.
Note: The cigarette lighter socket is rated for 10A. The socket has an internal automatic
circuit breaker. So resetting the breaker will not be necessary as this is done automatically.
The automatic circuit breaker may cycle 'ON' then 'OFF' if the load is close to the circuit
breakers rated current.
Q. Why didn't my jumpstarter start my vehicle?
A. There could be a number of reasons why the jumpstarter did not start you vehicle.
Check the following:
1. Ensure the battery is fully charged. Press the BATTERY STATUS button to check the
condition of the battery (state of charge). Refer to page 10 ("Checking Battery
Capacity") for further information.
2. Ensure you have followed the correct operating procedure. Refer to page 6 ("Vehicle
Jumpstarting Instructions").
3. Ensure the vehicle operates on 12V DC.
4. The vehicle's battery may be below 2.6V, the minimum start voltage for the jumpstarter.
Ensure all connections are correct, then press the OVER RIDE button, to manually
activate the jumpstarter. Refer to page 6 ("Vehicle Jumpstarting Instructions, Step 5")
for further information.
5. Ensure the vehicle being jumpstarted does not require a clamp output greater than
275 Amps (HP900) or 380 Amps (HP1200) in order to jumpstart the vehicle.
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