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FAQ's AP730 / AP730P

Q. How do I know if the battery is fully charged?
A. The % charge of battery value on the lower right hand side of the main data screen will read 100%.

Q. I have installed the battery correctly but the LCD screen reads “Alarm - open circuit”, what is wrong?
A. The battery is faulty or the 10A “main” fuse is blown, also check battery cables are firmly tightened to battery terminals. 

Q. How can I tell what stage the charger is in?
A. The battery charging cycle is indicated on the lower left hand side of the main data screen.

Q. What does Ahr mean?
A. An “amp hour” (abbreviation Ahr) is a unit of electrical charge and refers to the battery’s capacity. A power source rated at one amp hour can deliver one amp continuously for one hour or two amps for half an hour or sixty amps for one minute etc. 

Q. What type of batteries will the ArkPak charge?
A. The ArkPak AP730 can charge lithium iron phosphate batteries and most types of rechargeable 12V lead-acid type battery from 60 Ahr capacity up to 140Ahr. There are four main types of 12V lead acid battery - conventional wet lead-acid battery, calcium, AGM and gel. The ArkPak can charge both cold cranking type car batteries and deep cycle batteries. 

Q. How do I know which battery type and Ahr rating to select?
A. Normally the battery type and Ahr rating is marked on the battery by the manufacturer. If you are not sure contact your battery retailer. It is very important that the correct battery type is selected since the charger uses a different charge technique for each battery type.

Q. Can I charge the battery using the external terminals or accessory sockets?
A. Yes you can as long as the main isolator switch is in the “on” position. This type of charging is not controlled by the on-board microprocessor since the charge current will flow direct to the battery via the main isolator switch. If an external voltage regulator is not used there is a risk of overcharging and damaging the battery. Please also consider the accessory sockets are fused at 10A so a current flow higher than this will blow the fuse.

Q. Can I leave the ArkPak continually plugged in?
A. Yes the ArkPak will go into float cycle.

Q. My AC adaptor gets hot when charging, is that okay?
A. Yes that is normal, it can reach 75°C.

Q. Can I charge the battery and power a device at the same time?
A. Yes, the ArkPak is designed to do this.

Q. Why doesn’t my ArkPak go into charge cycle?
A. AC adaptor could be blown and needs replacing.

Q. When I connect my laptop AC adaptor to the AC outlet an alarm sounds with two beeps, why is that?
A. For some laptop adaptors the in-rush current can trigger the alarm and the internal inverter will protect itself. The issue can be overcome by turning the Arkpak AC outlet on first (so green LED is lit), then turning on the laptop and finally connecting the laptop adaptor to the laptop and Arkpak AC outlet.

Q. My 240V outlet keeps blowing the 30A fuse, why is that?
A. The device you have plugged into the 240V outlet is unsuitable (could be too powerful) and has damaged the internal inverter.

Q. Can I install the ArkPak into my vehicle as part of a dual battery installation?
A. Yes you can however, you will need a dual battery wiring kit installed into your vehicle. We recommend you get this kit installed by a qualified auto electrician. You can connect the dual battery wiring loom to the ArkPak either via the external terminals or the Anderson socket. Please remember the main isolator switch must be in the “on” position. The ArkPak can be fixed into your vehicle using the accessory mounting kit (Part no. APB20B - not included). The ArkPak cannot be mounted into the vehicle’s engine bay.

Q. Can I charge the battery using solar panels?
A. Yes you can as long as the main isolator switch is in the “on” position. This type of charging is not controlled by the on-board microprocessor since the charge current will flow direct to the battery via the main isolator switch. If an external voltage regulator is not used there is a risk of overcharging and damaging the battery.

Q. Why is the time remaining value often different to the actual time taken?
A. The predicted time remaining value is an estimate only. The time prediction is affected by many variables such as temperature, battery age and battery type and it is impossible for it to be completely accurate but it is a useful guide. 

Q. Is it possible for the ArkPak to power a device if it is turned off at the control panel?
A. Yes, it is, since the various output socket are connected direct to the battery via the main isolator switch and not via the smart charger. However it will not be possible to determine the battery voltage or the time remaining if this is done.

Q. Why doesn't my Arkpak go into charge cycle?
A. There are several possible reasons.

If you are charging the battery and running a device at the same time the screen will show discharge cycle if the output current is higher than the charge input current. This is normal.

Another reason could be the AC adaptor has failed. You can check the AC adaptor by trying to turn the screen on with the AC adaptor connected but the battery disconnected. If the screen won't turn on the AC adaptor is not working. A replacement can be sourced by contacting Ark Corporation.

Another reason could be that the built-in charger PCB has failed. This is the case if the AC adaptor black box makes a faint beeping sound when you try to charge from mains power. Also the DC car lead will continuously blow the plug 10A fuse. In this case the Arkpak will need to be returned to Ark Corporation for repair.

Q. My 240V outlet keeps blowing the fuse, why is that?
A. The device you originally plugged into the 240V outlet is unsuitable (could be too powerful for the maximum rating) and has damaged the internal inverter. Another sign of a damaged inverter is that the fuse is OK but the over temperature alarm sounds as soon as you turn the inverter on. The inverter will need to be replaced. 

Q. My Arkpak charges from 240V but not from the vehicle 12V cigarette socket, why is that?
A. The fuse in the Arkpak DC car lead cigarette plug or the vehicle side fuse for the 12V socket could be blown. If both these fuses are OK then in some instances the Arkpak will not charge if there is a large voltage drop between the start battery and the vehicle 12V socket (can occur if an aftermarket 12V socket is fitted at the back of the vehicle). The Arkpak low voltage charge cutout has activated in this case. 

Q. Why is there no output power from any of the Arkpak outlets (12V socket, 240V outlet etc) but the fuses are OK?
A. Either the battery is flat (under 10.5 volts) or the main isolator switch has a fault and wont connect to the battery in the "on" position. If the isolator has a fault the Arkpak will need to be returned to Ark Corporation for repair.

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