The home battery market has matured a lot in the last few years. What used to be a niche product is now mainstream — and the options can be genuinely confusing. This guide compares the major home battery systems available in the DFW market and helps you understand which fits which type of home.
What a Home Battery System Actually Does
A home battery system stores electrical energy in lithium-ion or lithium iron phosphate cells, then discharges that energy when you need it. Three main use cases:
Backup power:Â When the grid fails, your battery automatically takes over, keeping critical loads running. Transfer happens in milliseconds.
Solar self-consumption:Â If you have solar, the battery stores excess daytime production for use at night, capturing more of solar’s value.
Rate optimization:Â On time-of-use electric plans, the battery charges during off-peak rates and discharges during peak rates.
For most DFW homeowners, backup power is the primary motivator. Solar self-consumption is the secondary benefit. Rate optimization is a nice bonus if your plan supports it.
FranklinWH aPower 2 vs Competitors
We install multiple battery brands, and FranklinWH is one we recommend frequently. Here’s how it stacks up:
FranklinWH aPower 2
- 15 kWh usable capacity per unit
- Stackable up to 15 units (225 kWh total)
- LiFePO4 chemistry (safer, longer cycle life)
- 10 kW continuous, 22 kW peak per unit
- 12-year warranty
- Integrated aGate controller for load management
- Strong app and monitoring
Tesla Powerwall 3
- 13.5 kWh usable capacity
- Stackable
- LiFePO4 chemistry
- Integrated solar inverter (useful for new installs)
- 10-year warranty
- Mobile app with good interface
Enphase IQ Battery
- Modular (3.5, 5, or 10 kWh units)
- Pairs natively with Enphase microinverter solar
- LiFePO4 chemistry
- 15-year warranty
- AC-coupled architecture
Other Tier-1 brands offer similar specs with varying control architectures and warranty terms.
The “right” choice depends on your existing solar, your backup priorities, and your home’s load profile. There’s no universal “best” battery.
Sizing: How Many kWh Do You Need?
Battery sizing should match your goals, not arbitrary recommendations.
Essential-loads backup (8-12 kWh): Refrigeration, lighting, communications, fans, select outlets. 12-24 hours of comfort during outages. Most common configuration in DFW.
Whole-home backup excluding AC (15-25 kWh): Everything except your central air conditioning. Useful for spring/fall outages but inadequate for summer outages.
Whole-home backup including AC (30+ kWh): AC is a significant load. Running it during outages requires substantial battery capacity. Realistic for affluent homes prioritizing comfort during summer outages.
Multi-day autonomy (40+ kWh with solar): Full energy independence. The battery + solar combination handles multi-day outages and reduces grid dependence dramatically.
For most DFW homes, 12-24 kWh is the sweet spot — meaningful backup capacity, reasonable cost, fits in most utility rooms or garages.
AC vs DC Coupled Systems
This is technical but matters for system performance and future expansion.
DC-coupled systems connect the battery directly to your solar array on the DC side, before the inverter. Single inverter handles both solar and battery. More efficient (less conversion loss), simpler architecture. Best for new installs or major retrofits.
AC-coupled systems use a separate battery inverter that connects on the AC side of your solar inverter. Slightly less efficient but simpler to retrofit to existing solar. Better for adding batteries to existing solar arrays without replacing the original inverter.
Either architecture works fine. Choose based on whether you’re new install or retrofit.
Installation Costs in DFW
Real 2026 pricing in the DFW market:
- Single 13-15 kWh system installed: $13,000-$18,000
- Two-unit (~28-30 kWh) system installed: $22,000-$32,000
- Three-unit (~42-45 kWh) system installed: $32,000-$45,000
Factor in the 30% federal tax credit for substantial reduction. The credit applies to standalone battery installations as well as solar+battery.
What’s typically included:
- Battery modules
- Battery inverter (if not integrated)
- System controller / gateway
- Critical loads panel installation (if applicable)
- Electrical work and wiring
- Permits and inspections
- Monitoring setup
What can drive costs higher:
- Whole-home transfer switch (vs critical loads panel)
- Service panel upgrade if existing panel is undersized
- Difficult installation location
- Multiple battery units
Warranties & What to Watch For
Battery warranties have two limits: cycle life and years. Whichever you hit first ends the warranty.
Cycle life is how many full charge/discharge cycles the battery is rated for. Modern LiFePO4 batteries typically warranty 6,000+ cycles at 70-80% retained capacity. For most residential applications, you’d hit the year limit before cycle limit.
Year limit is typically 10-15 years for residential batteries.
Capacity retention is also worth checking. Some warranties guarantee 70% retained capacity at end of warranty period; others guarantee less.
Other warranty considerations:
- Does the warranty cover labor for replacement, or just the battery?
- Who handles warranty claims — the installer or the manufacturer?
- What’s the response time for warranty issues?
Quality installers help facilitate warranty claims rather than leaving you to fight with the manufacturer directly.
Should You Bundle With Solar?
For new installations, bundling solar and battery typically delivers better economics than installing them separately. Reasons:
- Single design and engineering process
- Single permit submission
- Single utility interconnection
- Federal tax credit applies to the whole system
- Hybrid inverter can serve both
For existing solar owners, retrofitting battery storage works fine. It’s a smaller project (1-2 days typically), and most existing solar systems can accommodate AC-coupled battery retrofits regardless of original inverter brand.
Getting Started
If you’re considering home battery systems for your DFW property, the smartest next step is a free consultation. We’ll evaluate your energy profile, your backup priorities, your existing solar (if any), and recommend specific systems sized for your needs.
We install FranklinWH, Tesla Powerwall, Enphase, and other top systems across the DFW metroplex. We’re a certified FranklinWH installer, which means certified training, full warranty support, and direct manufacturer relationship.
Reach out and we’ll give you honest answers about which battery makes sense for your home.