No more dead battery surprises when you get to the boat launch and no more running out of battery power on the water! Charge all of your boat batteries while you tow and charge your trolling motor batteries while you are on the lake. The Tow-In-Charge charges your 12-volt boat cranking battery, then activates the 12/24v Smart Box to charge your 12-volt trolling motor batteries while you tow. The 12/24v Smart Box charges up to two 12-volt accessory batteries from your boat’s alternator. Charge your 12 volt batteries while you drive or sit in idle on the lake.




  • Durable design with high quality 10 gauge wire and components.
  • All-In-Charge Smart Box technology reduces strain on your starting battery and alternator by engaging only after your starting battery is at 13 volts.
  • All-In-Charge Smart Box chargers charge the lowest charged battery first and one at a time, which reduces the chance of heat generation and charges multiple batteries more efficiently than other mobile 12-volt chargers.
  • Due to the safety features of All-In-Charge chargers, they will not harm alternators or void warrantes on motors or electronics.


What We Include:


Includes 12/24 Volt Smart Box, 10 foot circuit breaker wire harness, 7-prong wiring harness, 10 foot connector wire harness, and 20 foot battery terminal wire harness.


Includes a 90 day money back guarantee and 3 year limited warranty.




Box: 3″L x 3″W x 1″H

Upper box wiring: 10″

Lower box wiring: 46″

Fuse wire harness: 10ft

7 prong harness: 12″L

Connecting wire harness: 10ft

Terminal wire harness: 20ft

Total weight: 5lbs 3 ounces

Tow-In-Charge & 12/24v Smart Box DC-DC Combo