Pytes V16
A rugged, fully listed 16 kWh battery for outdoor whole-home backup with a 48 V inverter. You pay a premium for the IP66 enclosure and Pytes’ compatibility testing.
Current Connected $3,659$3,659
4.5/5
EG4’s current indoor wall battery, for whole-home systems that want large heated 16 kWh blocks. It costs about $100 less than the All-Weather version if the battery can live indoors.
- 16 kWhCapacity
- 200 AOutput
- 10,000Cycles
- YesUL 9540A
- 10 yearsWarranty
Check price at Signature Solar$3,739.99Check price at Current Connected$3,739.99
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Older model: this replaces the EG4 WallMount Indoor 280Ah (rated 4.4). See every EG4 WallMount generation.
Pros
- 16 kWh per unit; two run a 12 to 18 kW inverter at full output
- Heater lets it charge in an unheated garage
- App over Wi-Fi or Bluetooth for checking each battery
- Rated for 10,000 cycles, more than most 48 V batteries
Cons
- About 295 lb, so mounting needs two or more people
- Indoor-only enclosure
- No screen on the battery itself
The EG4 WallMount 314Ah family
Every EG4 WallMount 314Ah model we rank, smallest first. Ratings compare each against its own case.
| Model | Capacity | Rating | Price |
|---|---|---|---|
| EG4 WallMount Indoor 314Ah (this one) | 16 kWh | 4.5/5 | $3,739.99 |
| EG4 WallMount All-Weather 314Ah | 16 kWh | 4.5/5 | $3,835 |
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 | WM-48-314-IN-XX |
|---|---|
| Capacity | |
| Case | Wall or floor mount |
| Nominal voltage | 51.2 V |
| Capacity | 314 Ah |
| Energy | 16 kWh |
| Usable energy | 12.9 kWh |
| Chemistry | LiFePO4 |
| Cycle life | 10,000 at 80% depth |
| Power | |
| Continuous discharge | 200 A |
| Max charge current | 157 A |
| Modules in parallel | Up to 32 |
| Safety and communication | |
| UL 1973 | Yes |
| UL 9540A | Yes |
| UL 9540 | Yes |
| Communication | CAN, RS485 |
| Works with inverters | EG4, Growatt, Deye, Megarevo, Luxpower, Victron, Solis, SMA, Schneider, Voltronic |
| Self-heating | Yes |
| App | Yes |
| Build | |
| Display | No |
| Built-in breaker | Yes |
| Enclosure | IP20 |
| Dimensions | 34.1 x 18.1 x 9.6 in (865 x 460 x 245 mm) |
| Weight | 293.2 lb |
| Warranty | 10 years |
| Released | 2025-11 |
Alternatives in this case
Ruixu Lithi2-16
A heated, weather-resistant 16 kWh battery with full UL listings, at a low price per kWh. A good fit for a whole-home backup system with a 48 V inverter.
Amazon $3,099 Ruixu $3,059$3,059
EG4 WallMount All-Weather 314Ah
The outdoor pick in EG4’s wall lineup, for owners who want large heated 16 kWh blocks outside the house. It pairs best with EG4 inverters but talks to most major brands.
Signature Solar $3,835 Current Connected $3,835$3,835
Compare
Compare the EG4 WallMount Indoor 314Ah with any other 48V solar battery →
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