Blog Center

How to Understand Battery Specifications?

Renogy | August 18, 2025

What Is The Recommended Principle Of Connecting The Battery First And Then The PV?

By Renogy User Experience Team Apr 24th 2023

The controller is a step-down design, and the PV voltage is greater than the battery voltage. Connect the battery first and then PV. If the battery is connected reversely, it will cause irreversible damage to the controller.
Not all the controllers connected to PV alone can light up the controller. In order to avoid the controller not working due to the reverse connection of PV, the battery is connected first.

Still have problems?

Get additional support with our customer support

Contact Renogy Support

Previous Next

How Much Does Solar Panel Installation Cost in Canada?
The demand for solar energy is increasing day by day across the world, including Canada. The major reason behind its rising demand is that it generates electricity without producing air...
Renogy Canada | March 13, 2025
Marine Batteries Guide: Which Marine Battery is Right for You?
A good marine battery will ensure a safe, reliable, and fun sailing experience on your boat. The right battery will power the navigation system, communication system, lighting, refrigeration, and electronics....
Renogy Canada | February 19, 2025
How to Disconnect a Car Battery? A Step-By-Step Guide
Though disconnecting a car battery is simple, and you don't necessarily need to visit a technician for this purpose, not all can perform this task effectively. Whether you want to...
Renogy Canada | January 23, 2025
Batteries in series vs parallel: what are the differences?
Solar energy is becoming an increasingly popular source of renewable energy. It is clean, sustainable, and provides an excellent alternative to traditional fossil fuels. However, the issue with solar energy...
Renogy marketing team | March 17, 2023
How to Charge a Deep Cycle Battery
How to Charge a Deep Cycle Battery If you've ever owned an RV or a boat, you know that deep-cycle batteries are essential for keeping the lights on and the...
Renogy marketing team | March 10, 2023
Solar Panel Maintenance Guide: Practices, Cost, and Frequency
Maintaining solar panels in a hot, dry place like Nevada is relatively easy: You dust them off, polish them up once a year, and only check in on them if...
Renogy marketing team | February 9, 2023
Adding Or Replacing A Boat Battery
When dealing with harsh Canadian weather and the sometimes hostile sailing conditions found so far north, having the right boat battery is essential. You can’t just pop down to the...
Renogy marketing team | December 8, 2022
On-grid vs. off-grid vs. hybrid solar installations
What are the different types of solar power systems? Every photovoltaic solar panel system has common components including solar panels, charge controllers, and inverters. Once you decide to go solar,...
Renogy | December 13, 2021