12V Automatic 7 Amp 7 Stage Battery Charger Multi Chemistry Lithium

ADJUSTABLE OUTPUT

Adjustable for different battery sizes for precise charging

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HOW DO I KNOW IF THE BATTERY IS CHARGED?

The charger’s FULLY CHARGED LED will illuminate (solid). Alternatively use a Battery Hydrometer (Projecta Part No. BH100). A reading of 1.250 or more in each cell indicates a fully charged battery.

I HAVE CONNECTED THE CHARGER PROPERLY BUT THE ‘CHARGING LED’ DOES NOT COME ON?

In some cases batteries can be flattened to the point where they have very little or no voltage. This can occur if a small amount of power is used for a long time, for example a map reading light is left on for a week or more. Projecta 7 Stage chargers are designed to charge from as little as 2.5 Volts.

If the voltage is lower than 2.5 Volts use a pair of booster cables to connect between two batteries to provide more than 2.5 Volts to the battery being charged. The charger can then start to charge the battery and the booster cables can be removed.

CAN I USE THE CHARGER AS A POWER SUPPLY?

Yes, by selecting Power Supply mode you are able to use the charger as a power supply to run an appliance. Ensure the appliance being run is not greater than the charger’s output current and where possible connect the charger to a battery, and the battery to the appliance.

The charger may also be used to connect to a vehicle while changing the battery to maintain the vehicle’s computer and radio settings.

WHY DOES THE CHARGER RESET WHEN I CONNECT A LOAD DIRECTLY TO THE BATTERY CHARGER IN POWER SUPPLY MODE?

The charger will reset when in Power Supply mode if the load exceeds the charger’s capacity. Some appliances when turned on or first connected to the charger will cause the charger to reset and it will re-try by slowly ramping up its output.

HOW CAN I TELL WHAT STAGE THE BATTERY CHARGER IS IN?

Below are the conditions that are displayed by the LEDs for each of the charge stages.

WHAT HAPPENS IF MY BATTERY CHARGER IS IN DESULPHATION MODE OR SOFT START MODE, BUT I WANT TO START BULK CHARGING?

Desulphation mode is time limited to 6 hours and Soft Start is limited to 1 hour. If you cannot wait for the battery charger to move through these stages you can select Power Supply mode to charge the battery. After an hour of charging in Power Supply mode, there should be sufficient charge in the battery to bypass both Desulphation and Soft Start. Select the correct battery chemistry type to continue charging the battery. Whilst in Power Supply mode the charger will output a full current up to 13.8V.

WHAT IF I HAVE AN APPLIANCE CONNECTED TO THE BATTERY WHILST CHARGING?

Powering an appliance while charging your battery will impact the battery charger’s ability to accurately measure the battery’s response to the charge being applied. The battery charger has been designed to accommodate this situation although not recommended.

For optimum charging it is recommended to charge without any appliance load on the battery. Power Supply mode is recommended when an appliance is connected to a battery and is drawing power.

CAN I SELECT A DIFFERENT BATTERY CHEMISTRY FOR CHARGING MY BATTERY?

Yes, the battery chemistry selection can be different to your battery type if the charge voltages match the battery manufacturer’s recommendations.

WHY DOES CALCIUM MODE TAKE SO LONG TO CHARGE?

To fully charge a Calcium battery, the battery requires an extra charging stage called ‘Equalization’. This consists of a constant current being fed into the battery until 16V is reached. This rejuvenates the battery cells. This charging stage can take up to 12 hours.

WHY DO I NEED A SPECIAL CALCIUM MODE?

Because of the different chemistry used to make a Calcium battery, a different charging algorithm (or technique) is required. Calcium batteries are also affected when deeply discharged or used heavily. They need to be recharged by a Calcium charger to fully recharge the battery and to maximize the battery’s life and performance.

WHAT IS A CALCIUM BATTERY?

Calcium batteries are lead acid batteries that have had calcium added to the lead plates, either to one plate (called Calcium Hybrid) or to both plates (called Calcium–Calcium).

The added calcium provides a number of benefits:
i. Lower internal resistance which provides a small increase in CCA performance.
ii. The ability to withstand higher engine bay temperatures.
iii. Slow self discharge rate, which increases the shelf life, typically 4 times longer than a Lead–Lead battery.

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