Battery Energy Storage Systems

Store the sun.
Power every hour.

RESS designs and manufactures intelligent battery energy storage systems for homes, businesses, and utilities — built on safe LFP chemistry with seamless solar integration.

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10+
Years of Experience
LFP
Battery Chemistry
24/7
Monitoring & Support
100%
Solar Compatible
LFP chemistry 10 kWh modular
UL9540A NFPA 68 / 69 IEEE 693 Seismic IP55 Enclosure C4-H Anti-Corrosion LFP · LiFePO₄ Liquid Cooled Modbus TCP / RTU 10,000 Cycles 5-Year Warranty
What is BESS

Reliable power, even when the sun isn't shining.

A Battery Energy Storage System stores excess solar energy and releases it when demand rises or generation drops — keeping power reliable and costs predictable.

01 STORE

Capture excess solar

During daylight, surplus energy from your rooftop or field solar charges the battery instead of being wasted.

02 MANAGE

Smart EMS decides

The Energy Management System balances loads, monitors state-of-charge, and chooses when to store, use, or export.

03 DELIVER

Power on demand

At peak hours or after sundown, stored energy discharges to your load or the grid — reliable, predictable, clean.

Context
Why storage matters now

Rising industrial peak charges, hybrid renewable tenders, and diesel reduction goals are pushing storage from optional backup to core infrastructure.

Guidance
Choosing the right system

Look beyond battery capacity — evaluate chemistry safety, modular scalability, EMS intelligence, solar compatibility, and service backing.

Lithium Iron Phosphate (LFP) batteries for safety & long life
Smart Energy Management System (EMS)
Integrated thermal and safety controls
Peak shaving, backup power & grid stability
Our Solutions

One platform, every scale.

From a single rooftop to a full utility site, RESS systems scale to fit.

01

Residential

Compact home storage that pairs with rooftop solar for daily backup and savings.

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02

Commercial

All-in-one C&I systems for peak shaving and lower demand charges.

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03

Industrial

Hybrid energy solutions engineered for continuous industrial loads.

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04

Utility Scale

Containerized storage built for grid-scale renewable integration.

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Products

Twelve systems. One platform.

From a 1.92 kWh wall unit to a 5 MWh container — every RESS system runs the same LFP chemistry, the same BMS intelligence, and the same 5-year warranty.

Series
RESS 1.92kWh 19.2V 01Residential
1.92kWh

RESS1.92kWh_19.2V

LFP IP65 ≥6,000 cycles 9.6 kWh max
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  • Integrated inverter, battery and BMS in one compact unit
  • Stackable to 9.6 kWh — supports mixing old and new batteries
  • 1500 W AC charging power for fast charging
  • 1500 W off-grid output for home backup and outdoor power
Battery ChemistryLFP (LiFePO₄)
Cell Capacity100 Ah
Nominal Energy1.92 kWh
Nominal Voltage19.2 V
Operating Voltage16.8 – 21.6 V
ScalabilityMax 32 units in parallel (max 9.6 kWh)
Charge Current — Max Continuous100 A
Charge Current — Peak120 A
Discharge Current — Max Continuous100 A
Discharge Current — Peak150 A
Recommended Depth of Discharge80%
Cycle Life≥ 6,000 (25±2 °C, 0.5P, 100% DOD, 70% EOL)
Energy Throughput3 MWh
Dimension (W × H × D)480 × 249 × 260 mm
Weight (Approx.)26 kg
IP Rating of EnclosureIP65
Operating Temperature−20 to +55 °C (with heating)
Storage Temperature−10 °C to +45 °C
Relative Humidity0 – 95% (non-condensing)
Altitude≤ 3,000 m
InstallationWall-mounted / Stack-mounted
CommunicationCAN 2.0 / RS485 / Bluetooth + App
IndicatorLED (SOC, working, protecting) & buzzer
Warranty Period5 years
RESS 2.56kWh 25.6V 02Residential
2.56kWh

RESS2.56kWh_25.6V

LFP IP54 ≥6,000 cycles 40.96 kWh max
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  • Ultra-thin body with concealed wall bracket for easy install
  • Intelligent BMS monitors every cell, every second
  • Up to 95% usable depth of discharge
  • Rapid charge and discharge — 100 A per unit
Battery ChemistryLFP (LiFePO₄)
Cell Capacity100 Ah
Nominal Energy2.56 kWh
Nominal Voltage25.6 V
Operating Voltage22.4 – 28.8 V
ScalabilityMax 16 units in parallel (max 40.96 kWh)
Charge Current — Max Continuous100 A
Charge Current — Peak120 A
Discharge Current — Max Continuous100 A
Discharge Current — Peak150 A
Recommended Depth of Discharge80%
Cycle Life≥ 6,000 (25±2 °C, 0.5P, 90% DOD, 70% EOL)
Energy Throughput4 MWh
Dimension (W × H × D)400 × 175 × 380 mm
Weight (Approx.)29 kg
IP Rating of EnclosureIP54
Operating Temperature−20 to +55 °C (with heating)
Storage Temperature−10 °C to +45 °C
Relative Humidity0 – 95% (non-condensing)
Altitude≤ 3,000 m
InstallationWall-mounted / Stack-mounted
CommunicationCAN 2.0 / RS485
IndicatorLED (SOC, working, protecting) & buzzer
Warranty Period5 years
RESS 5.12kWh 51.2V 03Residential
5.12kWh

RESS5.12kWh_51.2V

LFP IP21 ≥6,000 cycles 1C charge
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  • Supports max 1C charge and 1.2C discharge
  • Integrated PACK — reduced line loss, higher energy density
  • Advanced BMS with cell balancing and active fuse protection
  • Auto-networking, quick pairing, local monitoring, auto warning
Battery ChemistryLFP (LiFePO₄)
Cell Capacity100 Ah
Nominal Energy5.12 kWh
Nominal Voltage51.2 V
Operating Voltage44.8 – 57.6 V
ScalabilityMax 32 pcs in parallel (max 64 pcs with CAN-Bridge)
Charge Current — Max Continuous100 A
Charge Current — Peak120 A (10 s)
Discharge Current — Max Continuous120 A
Discharge Current — Peak150 A (10 s)
Recommended Depth of Discharge80% DoD
Cycle Life≥ 6,000 (25±2 °C, 70% EOL)
Energy Throughput8 MWh
Dimension (W × H × D)370 × 548 × 140 mm (without hanging board)
Weight (Approx.)41 kg
IP Rating of EnclosureIP21
Operating TemperatureCharge 0 – 55 °C / Discharge −20 – 55 °C
Storage Temperature0 – 35 °C
Relative Humidity95% (non-condensing)
Altitude≤ 3,000 m
InstallationWall-mounted / Floor-mounted / Stack-mounted
CommunicationCAN 2.0, RS485, Bluetooth + App
IndicatorLED (SOC, working, protecting) & buzzer
Warranty Period5 years
RESS 10.24kWh 51.2V 04Residential
10.24kWh

RESS10.24kWh_51.2V

LFP IP65 ≥6,000 cycles 327 kWh max
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  • Maximum 1C charge and 1.25C discharge
  • Flat design — wall bracket or floor stand with removable base
  • Auto-networking battery modules, no DIP switch coding
  • Supports remote monitoring, upgrade, and stacked all-in-one systems
Battery ChemistryLFP (LiFePO₄)
Cell Capacity200 Ah
Nominal Energy10.24 kWh
Usable Energy9.2 kWh
Nominal Voltage51.2 V
Operating Voltage43.2 – 57.6 V
Built-in Circuit Breaker125 A 4P, 60 Vdc
ScalabilityMax 32 pcs pack in parallel (max 327 kWh)
Charge Current — Max Continuous198 A (recommended 100 A)
Charge Current — Peak300 A (2 min, 25 °C)
Discharge Current — Max Continuous240 A (recommended 100 A)
Discharge Current — Peak300 A (2 min, 25 °C)
Recommended Depth of Discharge90%
Cycle Life≥ 6,000 (25±2 °C, 0.5C/0.5C, 90% DOD, 70% EOL)
Dimension (W × H × D)600 × 830 × 200 mm (without hanging board)
Weight (Approx.)107 kg
IP Rating of EnclosureIP65
Operating TemperatureCharge 1 – 55 °C / Discharge −20 – 55 °C
Relative Humidity5 – 95%
Altitude≤ 3,000 m
InstallationWall-mounted / Floor-mounted
CommunicationCAN 2.0, RS485
IndicatorMaster LED (SOC 20 – 100% and working state)
Warranty Period5 years
RESS 16.07kWh 51.2V 05Residential
16.07kWh

RESS16.07kWh_51.2V

LFP IP65 ≥10,000 cycles 482.31 kWh max
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  • 314 Ah cells rated for 10,000 cycles — built for long-term reliability
  • 0.5C charge / 0.63C discharge for high-load backup demands
  • Built-in breaker — fewer components, faster installation
  • Dual-terminal daisy-chain design, no busbar needed
Battery ChemistryLFP (LiFePO₄)
Cell Capacity314 Ah
Nominal Energy16.07 kWh
Nominal Voltage51.2 V
Operating Voltage44.8 – 58.4 V
ScalabilityMax 30 units in parallel (max 482.31 kWh)
Charge Current — Max Continuous157 A
Charge Current — Peak200 A
Discharge Current — Max Continuous200 A
Discharge Current — Peak250 A
Recommended Depth of Discharge80%
Round-Trip Efficiency≥ 95%
Cycle Life≥ 10,000 (25±2 °C, 0.5P, 80% DOD, 70% EOL)
Energy Throughput40 MWh
Dimension (W × H × D)≤ 470 × 895 × 245 mm (without base)
Weight (Approx.)128 kg
IP Rating of EnclosureIP65
Operating TemperatureCharge 0 to +55 °C / Discharge −20 to +55 °C
Storage Temperature−20 to +35 °C (≤12 months) / +35 to +45 °C (≤6 months)
Relative Humidity0 – 95% (non-condensing)
Altitude≤ 4,000 m
InstallationWall-mounted / Floor-mounted
CommunicationCAN
IndicatorLED (SOC, working, protecting) & buzzer
Warranty Period5 years

Specification comparison

Every datasheet figure for the selected series, side by side.

Values are taken directly from the RESS product datasheet. Highlighted rows mark each system's headline figures.

Why RESS

Built for long-term performance.

01 · CHEMISTRY

Safe, proven chemistry.

LFP cells engineered for thermal stability and a long service life — every system, from the 1.92 kWh wall unit to the 5 MWh container.

10,000
Cycles to 70% EOL
on 314 Ah cells
02 · SCALABILITY

Modular & scalable.

Add capacity as your needs grow, without replacing the system.

10.4MWh
Max parallel capacity
03 · SERVICE

Service you can rely on.

Nationwide support network with real-time cloud monitoring.

24/7
Remote monitoring

Want to see the spec sheet?

Talk to our engineers about your project — chemistry, warranty, service SLAs.

Talk to an Engineer
About Us

Born in Surat. Built for India.

Rayshine Energy Storage Solution is a Rayshine Green Energy company, part of Unique Sun Group.

India generates more solar power than ever before — and still runs on diesel after sunset. That gap is not a generation problem. It is a storage problem.
Founded in
Surat, Gujarat — India's solar heartland
Group
Rayshine Green Energy · Unique Sun Group
Manufacturing
Single campus — PACK assembly through full system integration
Range
1.92 kWh wall unit to 5,015.9 kWh container

We started with a simple question: why do Indian families still lose power when India is producing more solar energy than at any point in its history? The answer was not a policy problem or a generation problem. It was a storage problem — and storage problems have engineering solutions.

We were founded in Surat with a single conviction: that every home and factory in India deserves reliable, affordable, stored energy. We saw a country generating more solar power than ever before, yet still depending on diesel generators when the sun went down. That gap — between generation and reliability — is exactly where RESS was born.

We weave the finest lithium iron phosphate cells from the world's best manufacturers, our own battery management intelligence, and a decade-long service commitment into every unit we build. Every cell is sorted and graded before assembly. Every pack is tested through a charge–discharge cycle before it leaves our facility.

We are not in the battery business. We are in the business of eliminating energy anxiety — permanently, affordably, and with complete transparency. Open specifications, honest pricing, and a warranty we fully intend to honour. We do not promise the most; we promise exactly what we deliver.

Vision

To become the world's most trusted brand in energy storage — giving every home, business, and factory on earth the power to store clean energy and use it on their own terms.

Mission

To deliver world-class energy storage with products you can trust, service you can always count on, and a promise to always put the customer first — making clean energy affordable for every consumer around the world.

01

Punctuality

We deliver before the deadline — because your time is your most valuable asset.

02

Momentum

We do not follow growth curves — we redefine them.

03

Integrity

We stay honest — with customers, with ourselves, and in the work we deliver.

04

Conviction

We lead with the belief that clean energy is not a choice — it is a responsibility.

05

Authenticity

What you see is what you get — no hidden costs, no vague terms, no excuses.

Engineering & Delivery

Researched in-house. Delivered end-to-end.

One campus handles the entire lifecycle — from PACK assembly to complete system integration — so reliability and uniformity are built in, not inspected in.

R&D Strength

Innovation at the core of everything we build.

Our dedicated R&D team advances Battery Energy Storage Systems through rigorous testing, system optimization and technology enhancement — focused on safety, performance, reliability and scalability across commercial, industrial and utility-scale applications.

  • Dedicated Battery R&D Team
  • Grade-A LFP Cell Engineering
  • Application-Specific Pack Design
  • Precision BMS Integration
  • Active Cell Balancing
  • Real-Time SOC / SOH Monitoring
  • Multi-Layer Safety Protection
  • High & Low Temperature Performance Testing
  • Rapid Charge Technology
  • High Energy Density Engineering
  • Lightweight Pack Architecture
  • Leak-Proof & Sealed Pack Design
  • High C-Rate Discharge Capability
Project Service

Four steps from requirement to commissioning.

Versatile integration and PACK lines accommodate bespoke client needs, supported by dedicated end-to-end service on every project.

  1. 01

    Requirement Definition

    Sales and technical teams work together to define a comprehensive requirements list — covering technical specifications, grid standards, and applicable subsidy policies.

  2. 02

    Solution Design

    3D site simulations and ROI projections are carried out to develop a fully tailored system solution for each project.

  3. 03

    Site Validation

    On-ground surveys by RESS engineers assess terrain, solar irradiance, and grid interconnection points to validate feasibility.

  4. 04

    Delivery Assurance

    FMEA-based risk management is embedded across design, production, and packaging stages to ensure zero-compromise delivery.

Get Started

Ready to go solar
with storage?

Talk to our energy storage specialists and find the right system for your site.

Talk to Our Experts Explore Products
Free consultation Nationwide service LFP chemistry
Call+91 98790 09666 Emailinfo@rayshine-ress.com VisitBL. 73-74, Near P.P. Savani University, NH-48, Moje Nandav, Ta. Mangrol, Dist. Surat, Gujarat 394125