FranklinWH aPower X
FranklinWH states 13.6 kWh usable energy (aPower X, 13.6 kWh, United States) and 13.6 kWh nominal energy (aPower X, 13.6 kWh, United States).
FranklinWH states 5 kW continuous power (aPower X, 13.6 kWh, United States).
Warranty terms: 12 years (FranklinWH aPower X, 13.6 kWh, United States); warranted throughput: 43 MWh (FranklinWH aPower X, 13.6 kWh, United States); capacity at warranty end: 70% (FranklinWH aPower X, 13.6 kWh, United States).
Named configurations include aPower X, 13.6 kWh and aPower X, 15 kWh.
Brand: FranklinWH
Published figures
| Figure | Value | Publisher | Source |
|---|---|---|---|
| Usable energy, FranklinWH aPower X (APR-05K13V1-US), FranklinWH aPower X, 13.6 kWh | 13.6 kWh | Manufacturer Checked against the document | Spec sheet, at p.1 / PERFORMANCE SPECIFICATIONS, retrieved Sep 25, 2026, dated Oct 11, 2025Usable System Energy | 13.6 kWh per unit, up to 15 units1 per aGate |
| Nominal energy, FranklinWH aPower X (APR-05K13V1-US), FranklinWH aPower X, 13.6 kWh | 13.6 kWh | Manufacturer Not yet checked | Warranty, at p.3 / Performance Warranty, retrieved Sep 23, 2026 |
| Continuous power, FranklinWH aPower X (APR-05K13V1-US), FranklinWH aPower X, 13.6 kWh | 5 kW | Manufacturer Checked against the document | Spec sheet, at p.1 / PERFORMANCE SPECIFICATIONS, retrieved Sep 25, 2026, dated Oct 11, 2025Real Power (discharge) | 5 kW continuous, 10 kW peak for 10 seconds |
| Peak power, FranklinWH aPower X (APR-05K13V1-US), FranklinWH aPower X, 13.6 kWh (discharging, 10 seconds) | 10 kW | Manufacturer Checked and corrected against the document | Spec sheet, at p.1 / PERFORMANCE SPECIFICATIONS, retrieved Sep 25, 2026, dated Oct 11, 20255 kW continuous, 10 kW peak for 10 seconds |
| Motor start (LRA), FranklinWH aPower X (APR-05K13V1-US), FranklinWH aPower X, 13.6 kWh | 118 A | Manufacturer Checked against the document | Spec sheet, at p.1 / PERFORMANCE SPECIFICATIONS, retrieved Sep 25, 2026, dated Oct 11, 2025Load Start Capability | 118 A LRA2 |
| Round-trip efficiency, United States, FranklinWH aPower X (APR-05K13V1-US), FranklinWH aPower X, 13.6 kWh | 89% | Manufacturer Checked against the document | Spec sheet, at p.1 / PERFORMANCE SPECIFICATIONS, retrieved Sep 25, 2026, dated Oct 11, 2025Round Trip Efficiency | 89%3 |
| Units per system, FranklinWH aPower X (APR-05K13V1-US), FranklinWH aPower X, 13.6 kWh (per aGate, max 4 for 120/208 V applications) | 15 units | Manufacturer Checked and corrected against the document | Spec sheet, at p.1 / feature list, retrieved Sep 25, 2026, dated Oct 11, 202513.6 kWh per unit, up to 204 kWh (15 units) per aGate |
| Largest stack, FranklinWH aPower X (APR-05K13V1-US), FranklinWH aPower X, 13.6 kWh | 204 kWh | Manufacturer Checked against the document | Spec sheet, at p.1 / feature list, retrieved Sep 25, 2026, dated Oct 11, 202513.6 kWh per unit, up to 204 kWh (15 units) per aGate |
| Lowest operating temperature, FranklinWH aPower X (APR-05K13V1-US), FranklinWH aPower X, 13.6 kWh | −20°C | Manufacturer Checked against the document | Spec sheet, at p.1 / ENVIRONMENTAL SPECIFICATIONS, retrieved Sep 25, 2026, dated Oct 11, 2025-4°F to 122°F (-20°C to 50°C) |
| Highest operating temperature, FranklinWH aPower X (APR-05K13V1-US), FranklinWH aPower X, 13.6 kWh | 50°C | Manufacturer Checked against the document | Spec sheet, at p.1 / ENVIRONMENTAL SPECIFICATIONS, retrieved Sep 25, 2026, dated Oct 11, 2025-4°F to 122°F (-20°C to 50°C) |
| Weight, FranklinWH aPower X (APR-05K13V1-US), FranklinWH aPower X, 13.6 kWh | 179 kg | Manufacturer Checked against the document | Spec sheet, at p.1 / MECHANICAL SPECIFICATIONS, retrieved Sep 25, 2026, dated Oct 11, 2025395 lb (179 kg) |
See it on the home battery chart
Stated temperature limits
Stated operating range: −4°F (−20°C) to 122°F (50°C), FranklinWH aPower X, 13.6 kWh.
Spec sheet, at p.1 / ENVIRONMENTAL SPECIFICATIONS, retrieved Sep 25, 2026, dated Oct 11, 2025
-4°F to 122°F (-20°C to 50°C)
Battery’s stated motor-start current: 118 A for the FranklinWH aPower X, 13.6 kWh (LRA means locked-rotor amps, a motor’s starting current). Compare starting current.
Warranty terms
| Term | Figure | Document |
|---|---|---|
| Warranty, United States | FranklinWH aPower X, 13.6 kWh: 12 years | Warranty, at p.3 / Warranty Period, retrieved Sep 23, 2026 |
| Warranted throughput, United States | FranklinWH aPower X, 13.6 kWh: 43 MWh | Warranty, at p.3 / Performance Warranty, retrieved Sep 23, 2026 |
| Capacity at warranty end, United States | FranklinWH aPower X, 13.6 kWh: 70% | Warranty, at p.3 / Performance Warranty, retrieved Sep 23, 2026 |
Warranty, at p.3 / Warranty Period, p.3 / Performance Warranty, retrieved Sep 23, 2026 Not yet checked
The stated 43 MWh equals 3,161 full cycles of its 13.6 kWh usable energy, FranklinWH aPower X, 13.6 kWh.
Features the manufacturer states
Configuration: FranklinWH aPower X (APR-05K13V1-US).
| Feature | Stated | Source |
|---|---|---|
| Chemistry | LFP Checked against the document | Spec sheet, at p.1 / PERFORMANCE SPECIFICATIONS, retrieved Sep 25, 2026, dated Oct 11, 2025Lithium Iron Phosphate (LFP) |
| Coupling | AC Checked against the document | Spec sheet, at p.1 / PERFORMANCE SPECIFICATIONS, retrieved Sep 25, 2026, dated Oct 11, 2025Coupling | AC-coupled |
| Whole-home backup | Yes Checked against the document | Spec sheet, at p.2 / system diagrams, retrieved Sep 25, 2026, dated Oct 11, 2025Whole Home Backup |
| Backup | whole or partial home backup via aGate Checked against the document | Spec sheet, at p.2 / system diagrams, retrieved Sep 25, 2026, dated Oct 11, 2025Whole Home Backup | Partial Home Backup |
| Built-in inverter | Yes Checked against the document | Spec sheet, at p.1 / feature list, retrieved Sep 25, 2026, dated Oct 11, 2025Built-in inverter |
| Enclosure rating | IP67 (battery and PCS), IP56 (wiring compartment) Checked against the document | Spec sheet, at p.1 / ENVIRONMENTAL SPECIFICATIONS, retrieved Sep 25, 2026, dated Oct 11, 2025IP67 (Battery and power converter system), IP56 (Wiring compartment) |
| Grid voltage | 120/240 or 120/208 V AC Checked against the document | Spec sheet, at p.1 / PERFORMANCE SPECIFICATIONS, retrieved Sep 25, 2026, dated Oct 11, 2025120 / 208 V, 120 / 240 V, 60 Hz |
| Dimensions | 1150 x 750 x 290 mm Checked against the document | Spec sheet, at p.1 / MECHANICAL SPECIFICATIONS, retrieved Sep 25, 2026, dated Oct 11, 2025(1150 mm × 750 mm × 290 mm) |
| Product status | current Checked against the document | Spec sheet, at p.2 footer, retrieved Sep 25, 2026, dated Oct 11, 2025The aPower 1.3 (SKU: APR-05K13V1-US) is available in United States and Canada. |
Configurations
Configurations named by the figures
- aPower X, 13.6 kWh
Other configurations
- aPower X, 15 kWh
Government and program lists
This product is on none of the lists this site reads.
Installs
Medians require at least 20 priced installs for the named measure and period.
- Connecticut records 147 installs, 2022–2026. Source: Connecticut Energy Storage Solutions — enrollment. Median battery cost, 2022–2026: $1,196 per kWh, from 147 priced installs.
What Connecticut homes paid
Figures are medians. Parentheses give the middle half of prices. A dash means too few prices for a median.
| Year | Pairing | Installs | Battery cost per kWh | Total battery cost | Contract price | Up-front incentive |
|---|---|---|---|---|---|---|
| All years | All pairings | 147 | $1,196 per kWh (middle half $1,158–$1,253)147 priced installs, 2022–2026 | $33,600 (middle half $31,600–$42,275)147 priced installs, 2022–2026 | $56,541 (middle half $34,650–$81,637)147 priced installs, 2022–2026 | $10,200 (middle half $6,800–$15,300)147 priced installs, 2022–2026 |
| All years | Paired with solar PV | 139 | $1,194 per kWh (middle half $1,158–$1,242)139 priced installs, 2022–2026 | $33,600 (middle half $31,600–$42,747)139 priced installs, 2022–2026 | $58,592 (middle half $35,600–$83,192)139 priced installs, 2022–2026 | $10,200 (middle half $6,800–$15,300)139 priced installs, 2022–2026 |
| All years | Standalone | 8 | —8 priced installs, 2023–2024 | —8 priced installs, 2023–2024 | —8 priced installs, 2023–2024 | —8 priced installs, 2023–2024 |
| 2022 | All pairings | 1 | —1 priced install, 2022 | —1 priced install, 2022 | —1 priced install, 2022 | —1 priced install, 2022 |
| 2023 | All pairings | 3 | —3 priced installs, 2023 | —3 priced installs, 2023 | —3 priced installs, 2023 | —3 priced installs, 2023 |
| 2023 | Paired with solar PV | 2 | —2 priced installs, 2023 | —2 priced installs, 2023 | —2 priced installs, 2023 | —2 priced installs, 2023 |
| 2023 | Standalone | 1 | —1 priced install, 2023 | —1 priced install, 2023 | —1 priced install, 2023 | —1 priced install, 2023 |
| 2024 | All pairings | 127 | $1,196 per kWh (middle half $1,158–$1,238)127 priced installs, 2024 | $33,600 (middle half $31,600–$43,947)127 priced installs, 2024 | $56,541 (middle half $34,500–$82,834)127 priced installs, 2024 | $10,200 (middle half $6,800–$15,300)127 priced installs, 2024 |
| 2024 | Paired with solar PV | 120 | $1,193 per kWh (middle half $1,158–$1,235)120 priced installs, 2024 | $33,600 (middle half $31,600–$45,075)120 priced installs, 2024 | $58,570 (middle half $35,097–$83,959)120 priced installs, 2024 | $10,200 (middle half $6,800–$15,300)120 priced installs, 2024 |
| 2024 | Standalone | 7 | —7 priced installs, 2024 | —7 priced installs, 2024 | —7 priced installs, 2024 | —7 priced installs, 2024 |
| 2025 | All pairings | 15 | —15 priced installs, 2025 | —15 priced installs, 2025 | —15 priced installs, 2025 | —15 priced installs, 2025 |
| 2026 | All pairings | 1 | —1 priced install, 2026 | —1 priced install, 2026 | —1 priced install, 2026 | —1 priced install, 2026 |
Contract prices may include solar or other equipment. Prices are before the up-front incentive. Approvals run through Sep 29, 2026. Counts and prices are from the program’s Oct 1, 2026 release.
Recalls and safety notices
No notice in the recall sources this site reads is matched to this product. That is not a safety finding. See every recall notice.
- UL 9540 listed: Yes (FranklinWH aPower X (APR-05K13V1-US))Spec sheet, at p.1 / COMPLIANCE INFORMATION, retrieved Sep 25, 2026, dated Oct 11, 2025
UL 9540, UL 9540A, UL 1741, UL 1973, IEEE 1547
- UL 9540A tested: Yes (FranklinWH aPower X (APR-05K13V1-US))Spec sheet, at p.1 / COMPLIANCE INFORMATION, retrieved Sep 25, 2026, dated Oct 11, 2025
UL 9540, UL 9540A, UL 1741, UL 1973, IEEE 1547
The maker states the listing or test. The listing body's records have not been checked.
Backup hours from your load
The stated usable energy divided by your load gives hours, starting with a full battery.
Spec sheet, at p.1 / PERFORMANCE SPECIFICATIONS, retrieved Sep 25, 2026, dated Oct 11, 2025
Usable System Energy | 13.6 kWh per unit, up to 15 units1 per aGate
Peak power: 10 kW (discharging, 10 seconds)
Backup hours follow the California Air Resources Board’s Zero Emissions Residential Backup Power Tool. Appliance figures come from the US Department of Energy’s Estimating Appliance and Home Electronic Energy Use (2012).
- The appliance figures are nameplate maximums. Average demand changes as appliances cycle and their settings change.
- A load above the stated continuous power gets no figure.
- Motor starts use three times the largest selected motor’s watts, plus the other loads. This estimate is checked against stated peak power when available. Other loads are counted at their running watts.
- Inverter and battery losses are not counted. A field study of household backup power explains the gap.
- Solar recharge, reserves, and temperature changes are outside the calculation.