Not just a product – a whole new concept: all the performance of an advanced alternator regulator without all the fitting.  

Why wait to arrive at your destination to plug in your battery charger? With the Sterling Power Alternator-to-Battery Charger you can provide your batteries a 4 step charging profile of up to 200 amps from your alternator while not being plugged into shore power!

The Sterling Power Alternator-to-Battery Charger is a marine grade, high performance, four step, alternator powered battery charger. By monitoring and then controlling the voltage level of the alternator connected to the input side, the alt-to-bat is able to provide a charge rate that recovers your batteries up to five times faster than a standard alternator.

Has the ability to mix on board battery types.

Can charge GEL, AGM, Flooded & Calcium Batteries among other types. 

(not ideal for Charging Lithiums, see our line of "Battery to Battery Chargers" for best Alternator Lithium charging)

Always ensures start battery is properly charged, but also prevents the starting battery from being overcharged and damaged.

Our 4 Step Battery Charging Profile extends the life of your batteries by ensuring a full charge & conditioning, as well as entering a float mode when charging is complete to protect against overcharging your batteries.

Installs in place of a standard alternator to battery isolator.

Available in 12 volt / 130 amp, 210 amp or 400 amp output models.

Available in 24 volt / 100 amp or 200 amp models.

Optional Remote Available (The Only Remote that works with model #AB12130 is Remote # ABNRC)