Question:
how long will the battery last without being charged
asked by: David
Expert Reply:
Without being used the 12V battery included with the Tekonsha Push-To-Test Trailer Breakaway Kit # 50-85-313 will start to lose charge at around 6 to 8 months. At the year mark it will fall below nominal charge and at 1-1/2 to 2 years it will be completely dead and would need to be jumped.
When installing the breakaway kit you will want to run the black power wire to the 12V circuit coming from the trailer's 7-Way so that the battery can maintain its charge during travel. I have attached a diagram to assist.
Tekonsha Push-To-Test Trailer Breakaway Kit with Built-In Battery Charger - Top Load