Franklin WH aPower vs Panasonic EverVolt 2.0 EVDC-105
The Panasonic EverVolt 2.0 EVDC-105 wins this battery comparison by a decisive margin. It delivers 13.6 kWh of usable storage with 7.6 kW continuous output and a 6,000-cycle rating, backed by a longer 15-year warranty. While capacity is matched, the Panasonic EverVolt 2.0 EVDC-105 compensates with superior power delivery and longevity.
Key Differences
- • Both provide 13.6 kWh of usable storage capacity.
- • Panasonic EverVolt 2.0 EVDC-105 achieves 93.5% round-trip efficiency vs 89%.
- • Panasonic EverVolt 2.0 EVDC-105 offers a longer 15-year warranty vs 12 years.
Specifications Breakdown
Usable Storage Capacity
The Franklin WH aPower provides 13.6 kWh of usable capacity (13.6 kWh total, 100% DoD), while the Panasonic EverVolt 2.0 EVDC-105 offers 13.6 kWh usable (13.6 kWh total, 100% DoD). At an average essential-load consumption rate of 750 watts, the Franklin WH aPower provides approximately 18.1 hours of backup versus 18.1 hours for the Panasonic EverVolt 2.0 EVDC-105. Identical usable capacity means both provide the same backup duration and daily cycling ability. The Franklin WH aPower is scalable up to 15 units (204 kWh total), while the Panasonic EverVolt 2.0 EVDC-105 scales up to 4 units (54 kWh total).
Power Output
The Franklin WH aPower delivers 5 kW continuous and 10 kW peak power, while the Panasonic EverVolt 2.0 EVDC-105 provides 7.6 kW continuous and 9.6 kW peak. The Panasonic EverVolt 2.0 EVDC-105's higher continuous output means it can simultaneously power more demanding appliances during an outage. A central air conditioner typically draws 3-5 kW, a refrigerator 0.1-0.2 kW, and an EV Level 2 charger 7-11 kW. Peak power rating matters for motor-driven loads with high startup current, such as air conditioners, well pumps, and sump pumps. The Franklin WH aPower's 10 kW peak is capable of starting most residential HVAC systems.
Battery Chemistry & Cycle Life
The Franklin WH aPower uses LFP chemistry with a rated cycle life of 6,000 cycles (approximately 16.4 years of daily cycling), while the Panasonic EverVolt 2.0 EVDC-105 uses LFP with 6,000 cycles (approximately 16.4 years). Both use LFP chemistry, which is considered the gold standard for residential energy storage due to its inherent safety, long cycle life, and environmental friendliness. Identical cycle ratings mean both batteries have the same expected operational lifespan under daily cycling.
Round-Trip Efficiency
The Franklin WH aPower achieves 89% round-trip efficiency versus 93.5% for the Panasonic EverVolt 2.0 EVDC-105. This means for every 10 kWh of solar energy stored in the Panasonic EverVolt 2.0 EVDC-105, 9.3 kWh is recoverable, compared to 8.9 kWh for the other. Over 10 years of daily cycling with 15 kWh average daily throughput, the more efficient battery saves approximately $370 in energy that would otherwise be lost as heat (at $0.15/kWh average retail rate). Higher round-trip efficiency is especially valuable in time-of-use rate environments where you are storing cheap off-peak energy for expensive peak-hour consumption.
Warranty & Long-Term Protection
The Franklin WH aPower carries a 12-year warranty and 43 MWh throughput, while the Panasonic EverVolt 2.0 EVDC-105 offers 15 years. The Panasonic EverVolt 2.0 EVDC-105 provides 3 additional years of manufacturer protection against capacity degradation and defects. Battery warranties typically guarantee the unit will retain 60-70% of original capacity by end of warranty, so the length of coverage directly impacts your financial risk over the system's lifetime.
Specification Comparison
| Specification | Franklin WH aPower | Panasonic EverVolt 2.0 EVDC-105 |
|---|---|---|
| Capacity | 13.6 kWh | 13.6 kWh |
| Usable Capacity | 13.6 kWh | 13.6 kWh |
| Power Output | 5 kW | 7.6 kW |
| Chemistry | LFP (Lithium Iron Phosphate) | LFP (Lithium Iron Phosphate) |
| Efficiency | 89% | 93.5% |
| Cycle Life | 6,000 | 6,000 |
| Weight | 130 kg | 127 kg |
| Warranty | 12 years | 15 years |
| Scalable | Yes | Yes |
5-Dimension Head-to-Head Analysis
1. Storage Capacity
Winner: TieBoth batteries provide 13.6 kWh of usable storage — identical backup duration for the same household loads.
2. Power Output
Winner: Panasonic EverVolt 2.0 EVDC-105The Panasonic EverVolt 2.0 EVDC-105 delivers 7.6 kW continuous versus 5 kW. Sufficient for most essential backup loads including a small AC unit. The power difference is modest for most backup scenarios.
3. Chemistry & Longevity
Winner: TieBoth use LFP chemistry with identical 6,000-cycle ratings. LFP chemistry provides excellent thermal stability, long cycle life, and no cobalt dependency.
4. Round-Trip Efficiency
Winner: Panasonic EverVolt 2.0 EVDC-105The Panasonic EverVolt 2.0 EVDC-105 achieves 93.5% round-trip efficiency versus 89%. Over 10 years of daily cycling with 15 kWh throughput per day, the more efficient battery saves approximately 370 dollars in energy that would otherwise be lost as heat (at $0.15/kWh). The difference is moderate but compounds over the battery's lifespan.
5. Warranty Coverage
Winner: Panasonic EverVolt 2.0 EVDC-105The Panasonic EverVolt 2.0 EVDC-105 offers a 15-year warranty versus 12 years. This is among the longest battery warranties in the residential market.
Franklin WH aPower
The Franklin WH aPower is a 13.6 kWh LFP battery designed to work with the Franklin aGate energy management gateway for comprehensive whole-home energy control. Its 10 kW peak power capability handles demanding startup surges from appliances like air conditioners and well pumps. With support for up to 15 units, the system scales to 204 kWh for commercial-grade residential applications. The inverter-agnostic AC-coupled design makes it compatible with virtually any existing solar installation, making it one of the most flexible battery options available. Franklin backs it with a 12-year warranty and 43 MWh throughput guarantee.
Pros
- + Exceptional scalability with up to 15 units for 204 kWh total capacity
- + 10 kW peak power handles heavy appliance startup surges
- + Inverter-agnostic AC-coupled design works with any solar system
- + 12-year warranty with 43 MWh throughput guarantee exceeds industry standard
Cons
- - Requires the separate aGate unit for full backup and management features
- - 89% round-trip efficiency is below average for LFP batteries
- - 5 kW continuous output per unit is modest for the capacity
Panasonic EverVolt 2.0 EVDC-105
The Panasonic EverVolt 2.0 EVDC-105 is the DC-coupled variant of Panasonic's second-generation home battery, optimized for new solar installations where panels connect directly to the battery's charge controller for maximum efficiency. With 13.6 kWh of LFP storage and 7.6 kW continuous output, it provides enough power and capacity for most whole-home backup scenarios. The high-voltage DC architecture reduces conversion stages, yielding higher overall system efficiency. Panasonic's 15-year warranty and reputation for manufacturing quality make it a strong contender in the premium residential storage segment.
Pros
- + DC-coupled design maximizes solar harvesting efficiency
- + 7.6 kW continuous output handles most household backup loads comfortably
- + Panasonic's industry-leading 15-year warranty coverage
- + Wide operating temperature range of -20 to 50 degrees C
Cons
- - DC-coupled installation is more complex and must be planned with the solar array
- - Heavier than some competing 13 kWh-class batteries at 127 kg
- - Higher upfront cost reflects premium Panasonic quality
Choose Franklin WH aPower If...
- ✓ You want the flexibility to expand storage capacity over time (up to 15 units)
- ✓ Homeowners who need massive scalability and inverter-agnostic compatibility with a focus on whole-home backup
Choose Panasonic EverVolt 2.0 EVDC-105 If...
- ✓ You need to power demanding appliances (AC, EV charger) simultaneously during outages
- ✓ You want to minimize energy losses during daily charge/discharge cycling
- ✓ A 15-year warranty gives you the confidence you need
- ✓ New solar installations where DC-coupled efficiency gains and Panasonic's build quality are top priorities
Our Recommendation
The Panasonic EverVolt 2.0 EVDC-105 is the decisive winner in this battery comparison, outperforming the Franklin WH aPower in 3 of 5 dimensions. Unless you have a specific requirement that the Franklin WH aPower uniquely addresses, the Panasonic EverVolt 2.0 EVDC-105 is the stronger choice for virtually every installation scenario.
Frequently Asked Questions
Which is better, Franklin WH aPower or Panasonic EverVolt 2.0 EVDC-105?
The Panasonic EverVolt 2.0 EVDC-105 wins this battery comparison by a decisive margin. It delivers 13.6 kWh of usable storage with 7.6 kW continuous output and a 6,000-cycle rating, backed by a longer 15-year warranty. While capacity is matched, the Panasonic EverVolt 2.0 EVDC-105 compensates with superior power delivery and longevity.
Which battery lasts longer?
The Franklin WH aPower is rated for 6,000 cycles versus 6,000 for the Panasonic EverVolt 2.0 EVDC-105. Both have identical expected cycle life. LFP chemistry generally outlasts NMC in cycle life testing.
Which battery provides more backup power?
The Franklin WH aPower provides 5 kW continuous (10 kW peak) versus 7.6 kW continuous (9.6 kW peak) for the Panasonic EverVolt 2.0 EVDC-105. Panasonic EverVolt 2.0 EVDC-105 can run more appliances simultaneously during an outage. A central AC typically needs 3-5 kW, a refrigerator 0.2 kW, and an EV charger 7-11 kW.
Can I expand Franklin WH aPower or Panasonic EverVolt 2.0 EVDC-105 storage later?
Franklin WH aPower: Yes, up to 15 units for 204 kWh total. Panasonic EverVolt 2.0 EVDC-105: Yes, up to 4 units for 54 kWh total. Franklin WH aPower offers more expansion potential.
Which battery chemistry is safer?
Both use LFP (Lithium Iron Phosphate) chemistry, which is the safest lithium battery chemistry for residential use. LFP does not undergo thermal runaway, uses no cobalt, and is inherently stable.
Related Resources
Last updated: February 2026