RESIDENTIAL ENERGY STORAGE
15 / 16 kWh LiFePO₄ Battery Series
Floor-standing, Slim Outdoor, Wall / Floor & Rack Options
LiFePO4 UN38.3 IEC 62619 CE 5-Year Warranty 6000 Cycles
About SunPhoton
SunPhoton is a global supplier of residential solar energy storage systems, focused on safe, long-life LiFePO₄ batteries for homes, off-grid cabins and small commercial sites. Our product line covers floor-standing, wall-mounted, slim outdoor and rack-mount energy storage units from 5 to 16 kWh, engineered to pair seamlessly with major hybrid inverters. We support distributors, installers and project integrators worldwide with certified products, clear technical documentation and long-term after-sales service.
Safe LiFePO4 Chemistry
Stable iron-phosphate cells with thermal safety, monitored by a smart BMS against overcharge, over-discharge, overheat and short circuit. ≥6000 Cycles
Tested at 25±2°C, 0.5C / 0.5C, 90% DOD, 70% EOL for a long service life under proper use.
High DOD
Up to 90% depth of discharge (95% on the IP65 Eu-L1) for maximized usable energy. Parallel Expansion
Up to 16 units in parallel (15 on Eu-L1) to build larger storage banks for bigger homes.
Wide Inverter Match
Compatible with SMA, Victron Energy, Deye, Growatt, Solis, GoodWe, SOFAR, SUNGROW and more. Certified & Supported
UN38.3, CE and IEC 62619 certified; 5-year warranty; RS485 / CAN, Bluetooth and WiFi monitoring.
Product Lineup — 15 / 16 kWh Family
Floor-Standing Tower (WY-B)
15 kWh / 48V and 16 kWh / 51.2V wheeled cabinet; wall or floor mounted; up to 16 parallel units.
Slim Outdoor Eu-L1
16.076 kWh, IP65, 95% DOD; built-in aerosol fire extinguisher; rain-ready outdoor unit.
Wall / Floor Cabinet (WY-J)
16 kWh / 14.3 kWh, 51.2V; compact body with round LCD; up to 16 parallel units.
3U Rack Mount (WY-DY)
16.076 kWh, 314Ah, 16S-1P; 19-inch stack/rack mounting; 98% charging efficiency.
Floor-Standing Tower — WY-B Series
Wheeled, wall-or-floor LiFePO₄ cabinet for whole-home backup; 15 kWh (48V) and 16 kWh (51.2V) options.
Parameter WY-B-48-314 · 15 kWh / 48V WY-B-51.2-314 · 16 kWh / 51.2V
Battery Type LiFePO4 LiFePO4
Nominal Energy 15 kWh 16 kWh
Nominal Voltage 48 V 51.2 V
Operating Voltage 40.5 – 54 V 43.2 – 57.6 V
Recommended Charge / Discharge Current (0.5C) ≤157 A ≤157 A
Recommended Charge / Discharge Power ≤7536 W ≤8038 W
Max Charge / Discharge Current (15 s) 200 A 200 A
Max Charge / Discharge Power (15 s) 9500 W 10000 W
Scalability Max. 16 in parallel (240 kWh) Max. 16 in parallel (256 kWh)
Depth of Discharge (DOD) ≥90% ≥90%
Communication RS485 / CAN, Bluetooth & WiFi monitoring RS485 / CAN, Bluetooth & WiFi monitoring
Protection Degree IP21 IP21
Cycle Life ≥6000 cycles (25±2°C, 0.5C/0.5C, 90% DOD, 70% EOL) ≥6000 cycles (25±2°C, 0.5C/0.5C, 90% DOD, 70% EOL)
Charge / Discharge Temp. 0°C ~ +55°C / -20°C ~ +55°C 0°C ~ +55°C / -20°C ~ +55°C
Display / Installation LCD + LED; Wall-mounted / Floor-mounted LCD + LED; Wall-mounted / Floor-mounted
Protection Smart BMS, Breaker, Fuse Smart BMS, Breaker, Fuse
Product Dimension (W×D×H) 820 × 450 × 250 mm 820 × 450 × 250 mm
Package Dimension 945 × 545 × 405 mm 945 × 545 × 405 mm
Net / Gross Weight 107.4 kg / 121.4 kg 109 kg / 123 kg
Warranty / Certification 5 Years; UN38.3, CE, IEC 62619 5 Years; UN38.3, CE, IEC 62619
Slim Outdoor Eu-L1 — 16.076 kWh, IP65
Weather-sealed slim cabinet for exterior mounting; 95% DOD and built-in aerosol fire extinguisher.
Parameter Specification
Battery Type LiFePO4 (Lithium Iron Phosphate)
Nominal / Usable Energy 16.076 kWh / 15.272 kWh
Nominal / Operating Voltage 51.2 V / 43.2 – 57.6 V
Recommended C-rate 0.45C (140 A)
Max Charge / Discharge Current 0.64C (200 A) / 0.64C (200 A)
Recommended Charging Power 7.168 kW
Max Charge / Discharge Power 10.24 kW / 10.24 kW
Depth of Discharge (DOD) 95%
Charge / Discharge Temp. 0°C – 55°C (-20°C – 55°C optional) / -20°C – 55°C
Net Weight / Dimension (L×W×H) 116 kg / 435 × 233 × 857 mm
Ingress Protection IP65
Communication Port CAN / RS485
Cycle Life 6000 cycles
User Interface WiFi + Bluetooth + APP
Safety Protection Built-in aerosol fire extinguisher
Installation / Expansion Wall-mounted / Floor-standing; max 15 units parallel
Warranty / Certification 5 Years; UN38.3 / IEC 62619
Compatible Inverters SMA, Victron Energy, Ingeteam, Solis, GoodWe, Growatt, Solplanet, Luxpower, Deye, Apsystem, etc.
Wall / Floor Cabinet — WY-J Series
Compact 51.2 V cabinet with round LCD; 16 kWh flagship and 14.3 kWh option; up to 16 parallel units.
Parameter WY-J-51.2-280 · 14.3 kWh WY-J-51.2-314 · 16 kWh
Battery Type LiFePO4 LiFePO4
Nominal Energy 14.3 kWh 16 kWh
Nominal Voltage 51.2 V 51.2 V
Operating Voltage 43.2 – 57.6 V 43.2 – 57.6 V
Recommended Current / Power (0.5C) ≤140 A / ≤7168 W ≤157 A / ≤8038 W
Max Current / Power (15 s) 200 A / 10000 W 200 A / 10000 W
Scalability Max. 16 in parallel (224 kWh) Max. 16 in parallel (256 kWh)
DOD / Communication ≥90%; RS485 / CAN, Bluetooth & WiFi ≥90%; RS485 / CAN, Bluetooth & WiFi
Protection / Cycle Life IP21; ≥6000 cycles (25±2°C, 0.5C/0.5C, 90% DOD, 70% EOL) IP21; ≥6000 cycles (25±2°C, 0.5C/0.5C, 90% DOD, 70% EOL)
Charge / Discharge Temp. 0°C ~ +55°C / -20°C ~ +55°C 0°C ~ +55°C / -20°C ~ +55°C
Display / Installation LCD + LED; Wall-mounted / Floor-mounted LCD + LED; Wall-mounted / Floor-mounted
Protection Smart BMS, Breaker, Fuse Smart BMS, Breaker, Fuse
Product Dimension (W×D×H) 860 × 523 × 260 mm 860 × 523 × 260 mm
Package Dimension 930 × 620 × 410 mm 930 × 620 × 410 mm
Net / Gross Weight 123 kg / 143 kg 130 kg / 143 kg
Warranty / Certification 5 Years; UN38.3, CE, IEC 62619 5 Years; UN38.3, CE, IEC 62619
3U Low-Voltage Rack — WY-DY-51.2-314
19-inch stack / rack-mount 16.076 kWh unit for closets, utility rooms and small rooms.
Parameter Specification
Nominal Voltage / Energy / Capacity 51.2 V / 16.076 kWh / 314 Ah
Cell Type / Configuration 51.2 V 314 Ah; 16S-1P
Cycle Life / Design Life ≥6000 cycles / 15 years
BMS Communication / Efficiency RS485, CAN / 98% charging efficiency
Recommended Charge / Max Discharge Current 100 A / 200 A
Over / Under-Voltage Protection 57.6 V / 43.2 V
Charge / Discharge / Storage Temp. 0°C – 55°C / -10°C – 55°C / -20°C – 65°C
Shipment SOC / Humidity 30% – 50% SOC / 5% – 90% non-condensing
Protection / Certification IP20; UN38.3 / CE
Installation Stack / Rack mounted
Dimension (L×W×H) / Net Weight 442 × 750 × 222 mm / 116 kg
Inverter Compatibility & Certifications
Our LiFePO₄ batteries communicate over CAN / RS485 and are matched with leading hybrid and off-grid inverters:
SMA Victron Energy Deye Growatt Solis GoodWe
SOFAR SUNGROW Solplanet Ingeteam Luxpower Apsystem
Fronius ENPHASE HOYMILES KSTAR SOLAX POWER DYNESS
Certification Description
UN38.3 Transport safety test for lithium batteries (air, sea, road).
IEC 62619 Safety requirements for secondary lithium cells in industrial energy storage.
CE European conformity marking for safety, EMC and environmental standards.
* Compatibility is indicative; please confirm your exact inverter model with our sales team before ordering.
SunPhoton
Residential Energy Storage · 15 / 16 kWh LiFePO₄ Series
www.pvsolarpowersystem.com
Asia asia@pvsolarpowersystem.com
Americas america@pvsolarpowersystem.com
Europe europe@pvsolarpowersystem.com
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