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
The Pytes V16 is the better 48V solar battery overall, rated 4.5 to 4.3. The Pytes V16 leads on features. The Discover Helios ESS 16kWh costs $109 less ($3,550 vs $3,659).
Discover Helios ESS 16kWh
For homeowners who want a single large, heated, outdoor-rated battery that passes inspection. Its UL 9540 listing and direct inverter communication make it an easy choice for permitted grid-tied and off-grid builds.
NAZ Solar Electric $3,550$3,550
Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Pytes V16 for features (inverter communication, self-heating, app vs inverter communication, self-heating; no app).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every wall and floor mount 48V solar battery; a clear win is highlighted. How we rank explains each one.
| Factor weight | Pytes V16 | Discover Helios ESS 16kWh |
|---|---|---|
| Overall rating | 4.5/5 | 4.3/5 |
| Value 35% | 82 $229 per rated kWh | 84 $221 per rated kWh |
| Output 15% | 49 200 A continuous (about 10.2 kW) | 48 200 A continuous (about 10.2 kW) |
| Warranty 15% | 100 10-year warranty | 100 10-year warranty |
| Safety listing 15% | 100 UL 1973, UL 9540 listed | 100 UL 1973, UL 9540 listed |
| Cycle life 10% | 100 8,000 cycles, maker rating | 50 cycle life not published (neutral score used) |
| Features 10% | 100 inverter communication, self-heating, app | 70 inverter communication, self-heating; no app |
Specifications
| Pytes V16 | Discover Helios ESS 16kWh | |
|---|---|---|
| Capacity | ||
| Case | Wall or floor mount | Wall or floor mount |
| Nominal voltage | 51.2 V | 51.2 V |
| Capacity | 314 Ah | 314 Ah |
| Energy | 16 kWh | 16.1 kWh |
| Usable energy | - | 16.1 kWh |
| Chemistry | LiFePO4 | LiFePO4 |
| Cycle life | 8,000 | - |
| Power | ||
| Continuous discharge | 200 A | 200 A |
| Peak discharge | 300 A | 300 A |
| Max charge current | 200 A | 200 A |
| Modules in parallel | Up to 16 | Up to 36 |
| Safety and communication | ||
| UL 1973 | Yes | Yes |
| UL 9540A | Yes | Yes |
| UL 9540 | Yes | Yes |
| Communication | CAN, RS485, RS232, dry contact, Wi-Fi | CAN (direct, Pylon protocol); LYNK port to LYNK II Gateway |
| Works with inverters | Victron, Sol-Ark, EG4, LuxPower, Growatt, Deye, SMA, Solis, Studer, Voltronic | Sol-Ark, Victron, Schneider, Deye, Growatt, Luxpower, Megarevo, NOARK, Solis, Sunsynk |
| Self-heating | Yes | Yes |
| App | Yes | No |
| Build | ||
| Display | - | No |
| Built-in breaker | Yes | Yes |
| Enclosure | IP66 | IP65 |
| Dimensions | 27.1 x 10.2 x 27.6 in | 900 x 465 x 247 mm (35.4 x 18.3 x 9.7 in) |
| Weight | 288 lb | 299 lb |
| Warranty | 10 years | 10 years |
| Released | 2025-09 | 2025-02 |