Sure Power Battery Separator Bi-Directional
Part #: 1315A

The Sure Power Battery Separator is designed for use in multi-battery applications as a excessive loading while allowing auxiliary batteries to be charged. The Sure Power Battery Separator has two basic operational characteristics.

Bi-Directional Battery Separator :
Able to have two charge sources connected; one upon the Main Battery, and a second upon the Auxiliary Battery - This means that the charge current can go in two different directions, from the Main Battery to the Auxiliary Battery, or the Auxilary Battery to the Main Battery. Whichever battery is connected to the ACTIVE charging source will be considered the "Main Battery" as far as the functions of the Battery Separator are concerned.

• Voltage: 12 Volts
• Amperage: 100 Amps
• Approx. Item Weight: 1 Pound

ASSIST IN ENGINE STARTING:
When the starter is activated the Battery Separator compares the voltage of both battery banks. If the chassis' battery is lower the the auxiliary battery bank, the Battery Separator will engage, allowing the auxiliary battery bank to aid in vehicle starting. The start signal must be at least three volts for this operation to occur.

PROTECT THE CHARGING SYSTEM:
Once the engine has started, the 1315 monitors only the main battery and charges the auxiliary battery if the main battery is above the connect threshold. The connect threshold is set to a nominal voltage of 13.2V, which would only be reached when the charging system is operational. This will cause the relay to only close when the charging system is operational, charging both banks of batteries. The disconnect voltage is set to a nominal 12.8V, which is near the full charge resting voltage of the batteries. This will cause the relay to be opened shortly after the engine is stopped, attempting to preserve 100% of the starting battery capacity for engine cranking.

1. SIMPLE INSTALLATION:
   Connects to primary battery, auxiliary battery and ground. Absolutely no system modifications are necessary.


2. MULTIPLE BATTERY CHARGING:
   The battery separator allows multiple batteries to be charged from one charging source (usually, but not necessarily, an alternator). When the batteries are not being charged, the Battery Separator separates or isolates the batteries.


3. PRIORITIZED CHARGING:
   The Battery Separator waits until the battery connected to the active charging source reaches approximately 13.2 Volts before paralleling and charging the remaining batteries. The system disconnects at approximately 12.8 Volts.


4. PREVENTS CHARGING SYSTEM OVERLOAD:
   If the current requirements are greater then the charging source can produce, the Battery Separator will automatically separate the batteries, thus directing all available charge current to the battery directly connected to the charging source. The system will then reset and re-attempt charging the auxiliary battery. A time delay prevents false switching.


5. START ASSIST FEATURE:
   An optional input from the key switch or a manual switch will program the Battery Separator to parallel the batteries during starting. This feature will only engage if the auxiliary battery has sufficient power available to assist in starting.