DIY Battery Backup: How Easy (or Hard) Is It Really?

March 17, 2025

Adding a battery backup system to your solar setup is a great idea—store excess energy, keep the lights on during blackouts, and gain more energy independence. But is it actually something you can install yourself?

The answer: It depends.

This guide breaks down the reality of DIY battery backup installation—what’s easy, what’s challenging, and whether you should tackle it yourself or call in the pros.

How DIY-Friendly Are Battery Backup Systems?

Solar battery systems have come a long way, with some designed specifically for easier DIY installation. However, even the “plug-and-play” models require some electrical knowledge and careful setup.

Plus, not all DIY solar kits are equal--easier to install/portable options may not have the same level of power, expandability, warranty, or smart capability.

Making Your DIY Battery Install As Easy As Possible:

Pre-Wired Systems: Some battery systems require complicated wiring, while others are pre-configured, making them easier to install.
Modular Systems: Modular batteries can be added to an existing backup system without needing to fully rewire your setup, making integration smoother.
Online Support & Resources: Many manufacturers provide step-by-step guides and customer support to help with DIY installation. Some even require that you take a free certification course.
Lower-Power Setups: Small-scale battery backups for essential loads (fridges, lights, internet) are easier to install than whole-home solutions. If you're just looking to backup a few devices during outages, a portable battery system is the easiest option.

The Hard Parts:

High-Voltage Electrical Work: Battery systems operate at dangerous voltages. If you’re not experienced, wiring mistakes could lead to serious safety hazards.
Permit & Code Requirements: Many areas require permits, inspections, and compliance with electrical codes--particularly grid-tied systems. This can complicate things for DIYers, so make sure to check your local requirements before starting.
Heavy Lifting & Mounting: Batteries are heavy—some weigh over 200lbs. Proper installation often requires multiple people and secure mounting.
System Integration Challenges: If your solar inverter isn’t compatible with your battery, you may need additional equipment or a system redesign. Check out our guide on choosing the right system to avoid compatibility issues.

DIY Battery Installation: Step-by-Step Overview

While every system has its own instructions, here’s a general look at what DIY battery backup installation involves:

Check Local Codes & Get Permits: Some areas require professional installation, so check before starting.
Turn Off Power & Prepare Wiring: Safety first! Shut down power and prepare the electrical connections according to manufacturer guidelines.
Mount the Battery: Securely install the battery on a stable wall or surface, ensuring proper ventilation and clearance.
Connect to Your Solar System: Depending on your setup, this may involve inverter adjustments, software configurations, or additional monitoring hardware.
Test & Monitor: Power up the system, check for errors, and monitor battery performance (manually, or through the manufacturer’s app).

Should You DIY or Hire a Pro?

If you’re comfortable with electrical work and follow safety precautions, a DIY battery backup is possible—especially with user-friendly systems. But if you’re dealing with a complex setup, high-voltage connections, or strict permit requirements, hiring a professional might save you time and headaches.

For smaller, less complex battery systems, DIY installation can be perfectly manageable if you have basic electrical knowledge and follow safety guidelines. But for larger, high-voltage systems, professional installation can be worth the investment.

Thinking about adding battery backup to your solar setup? Start with a system that fits your skill level: check out our Best DIY Solar Panel Kits to complete your energy independence plan!