SunGoldPower CoreX 5 Elite
The wall-mount version of the CoreX 5 Pro, for indoor systems where a rack doesn’t fit. Choose a UL-listed battery if your permit needs one.
Amazon $1,250$1,250
3.6/5
For homeowners and installers who want a neat, outdoor-rated stack that goes up in minutes with no battery cabling. It costs more per kWh than server-rack batteries, so it suits buyers who value the clean install and the Briggs warranty.
- 6.7 kWhCapacity
- 130 AOutput
- 4,500Cycles
- YesUL 9540A
- 10 yearsWarranty
Check price at Off Grid Stores$3,362.99
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Batteries stack and connect through one plug, with no cables between modules
- Outdoor-rated stack can go on the ground or a wall, with no cabinet to buy
- Each battery can deliver 130 A continuous, more than a typical rack module
- Ten-year warranty from a long-established US brand
Cons
- Each stack also needs a separate battery controller, which adds cost
- No built-in heater for charging in deep cold
- Closed-loop support covers fewer inverter brands than most rivals
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its case. How we rank explains each one.
Specifications
| Model number | SPHI-B-6.6 |
|---|---|
| Capacity | |
| Case | Wall or floor mount |
| Nominal voltage | 51.2 V |
| Capacity | 130 Ah |
| Energy | 6.7 kWh |
| Chemistry | LiFePO4 |
| Cycle life | 4,500 at 100% depth |
| Power | |
| Continuous discharge | 130 A |
| Peak discharge | 240 A |
| Max charge current | 100 A |
| Modules in parallel | Up to 18 |
| Safety and communication | |
| UL 1973 | Yes |
| UL 9540A | Yes |
| UL 9540 | Yes |
| Communication | CAN, RS485 |
| Works with inverters | EG4, Sol-Ark, Growatt, Megarevo, Solis |
| Self-heating | No |
| App | No |
| Build | |
| Enclosure | IP20 (IP65 when stacked) |
| Dimensions | 726 x 440 x 170 mm (28.6 x 17.3 x 6.7 in), 480 mm with tabs |
| Weight | 125 lb |
| Warranty | 10 years |
| Released | 2024-04 |
Alternatives in this case
BigBattery 48V Husky 2 INV
For RV, van and small off-grid systems that need a rugged, weatherproof 48 V battery that talks to the inverter. Home systems that stay indoors get more for the money from a rack battery.
BigBattery $1,580 Signature Solar $1,580$1,580
Renogy 48V 50Ah Core Self-Heating
A rugged, heated 2.4 kWh battery for small 48 V off-grid and RV systems that don’t need inverter communication.
Renogy $701.99$701.99
Compare
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