Yes, that is the added feature of the 1315. Whichever battery is
attached to a charging source, it will automatically connect the other
battery as well so both get charged. The slightly cheaper 1314 only
allows automatic combined charging from one side.  Both batteries still
get charged automatically but only by a charger on the main battery.
Even the 1314 can charge from both sides if you connect a manual switch
to the control lead of the separator.

Mark

Jeffrey Vickers wrote:

> So Dennis---just so I'm sure about this---a smart separator like the
> Surepower 1315 connected to the aux battery will allow both batteries
> to be charged in BOTH directions--from either the engine alternator
> OR a single 120V charger also connected to the aux battery. Thanks.
>
> Jeff
>
>
>
> On Mar 11, 2006, at 6:24 PM, Automatic digest processor wrote:
>
>> This is where smart charge separators or combiners come in handy. You
>> connect the charger to the auxiliary battery. As the battery is
>> charging, the combiner will sense the voltage increase and connect the
>> main battery now allowing both to be charged. It works the same
>> when the
>> main battery is charged from the engine alternator to charge the
>> auxiliary battery.
>>
>> Dennis
>
>
>