Growatt ALP 5.0L-E2 US
An outdoor-rated 5 kWh battery for owners of a Growatt US hybrid inverter. Owners of other inverter brands get more for less from a rack module.
Amazon $1,547.55$1,547.55
3.9/5
One of the largest single 48 V batteries sold, for whole-home or light-commercial systems installed by a dealer. Expect to pay dealer prices and plan for a heavy floor-standing cabinet.
- 18.4 kWhCapacity
- 180 AOutput
- 8,000Cycles
- YesUL 9540A
- 10 yearsWarranty
Check price at Solamp$6,479
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 18.4 kWh in one cabinet covers a whole home with one battery
- Handles 180 A continuously, enough for a 9 kW inverter from a single unit
- Touch screen and breaker on the unit simplify service
- Up to 20 in parallel for 370 kWh banks
Cons
- 520 lb cabinet needs equipment to move and a solid floor
- No heater, so it needs to stay above freezing to charge
- Warranty requires a licensed installer
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 | eVault MAX 18.5 |
|---|---|
| Capacity | |
| Case | Wall or floor mount |
| Nominal voltage | 51.2 V |
| Capacity | 360 Ah |
| Energy | 18.4 kWh |
| Chemistry | LiFePO4 |
| Cycle life | 8,000 at 80% depth |
| Power | |
| Continuous discharge | 180 A |
| Peak discharge | 250 A |
| Max charge current | 180 A |
| Modules in parallel | Up to 20 |
| Safety and communication | |
| UL 1973 | Yes |
| UL 9540A | Yes |
| UL 9540 | Yes |
| Communication | CAN, RS485 |
| Works with inverters | Fortress Envy, Fortress Solo |
| Self-heating | No |
| App | No |
| Build | |
| Display | Yes |
| Built-in breaker | Yes |
| Enclosure | IP55 |
| Dimensions | 20.3 x 20.3 x 42.2 in (515 x 515 x 1073 mm) |
| Weight | 520 lb |
| Warranty | 10 years |
| Released | 2021-06 |
Alternatives in this case
BigBattery Nexus 2 16kWh
For off-grid cabins and homesteads that need a lot of heated storage for the least money and don’t need UL paperwork. Grid-tied homes facing inspection should pick a UL 9540 battery instead.
BigBattery $2,990$2,990
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
Compare
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