TECHNICAL PROPOSALFOR

INTEGRATED FIREFLY BATTERY PACK SYSTEMFOR

RESIDENTIAL APPLICATIONSJAPAN.

Client Requirement and Existing Issues :

As Per Current Electricity Power Rates in Japan, there is LargeDiffererence in Electricity rates during Peak Hours (Day Time ) andLean Hours (Night Time)

Japan is focusing on use of Renewable Energy source forelectricity generation and reduce dependence on Nuclear PowerPlants, so energy storage is necessary to get uninterrupted powerwhile using Renewable energy resources.

Low Cost Electrical energy storage during Night hours and useLow Cost Electrical energy storage during Night hours and usethat stored energy in day time/Peak time seems a viable solutionfor Residential Applications.

In Residential Applications, energy requirement varies from 5-20 kWh/day for necessary loads, so Energy Storage System shouldbe integrated along with Charger/Inverter and should be readyfor use just by plugging in the load connection.

Proposal from Firefly Battery

Based on requirement of Energy storage for Residential Applications, ETainImmodo Renewables Ltd. suggests to install Firefly Battery Pack along withCharger & Inverter. The Proposed Power pack is ready for use by just Pluggingin the Load connection.

Firefly Pack through its Oasis Microcell-Carbon-Foam technology batteryoffers a robust, long-lasting, reliable solution, overcoming all the drawbacks oftraditional battries.Oasis Battery uses Patented Microcell-Carbon-Foamtechnology, Which enables longer life and provide consistent performancethroughout the product life-cycle, thus delivering lowest cost of ownershipcompared to any other Energy Storage System.compared to any other Energy Storage System.

Firefly Pack can be tailored to individual house energy requirements. It thushelps you to store low rate electrical energy and use it at a time when rate ishigher. It also helps to install Solar PV and Wind in future, to utilize requiredamount of homemade power to reduce electricity purchases from grid, achieveindependence from rising electricity prices and grid disturbances.

Based on requirment,We proposed Standard Solution of FireflyBattery Pack with 8 or 12 batteries. We can also offer Custom MadeESS according to Client’s Load requirement.

PROPOSAL FOR DOMESTIC APPLICATIONTechnical Details and Working of 10.56 KWh Battery Pack

Overall System Specification :

Parameter System-1 10.56 KWh

10.56 KWh Battery Pack with 2.4 KVA Inverter

Battery Pack 10.56 KWh,8 Nos of 12 V, 110 AH Group-31 Battery

Inverter Charger2400 VA, 48 V DC Input and 100 Vac, 50 Hz OutputVoltageInverter Charger Voltage

Max. Surge Load of Inverter5000 VA Surge Capacity and 2800 VA Surge for 30Sec.

Total Power Use in day time From Battery5-6 KWh/Day, Also one can discharge the Battery up toFull rating once in a while

Warranty of Inverter/Charger 5 Years

Warranty on Battery Pack5 Years, however it will last for 10-12 years @50%DOD

Working of System

System will Charge the Battery in Night Hours and usethe stored energy during Day Time during Peak EnergyRates..

Single Line Diagram for 10.56 KWh Battery Pack

PROPOSAL FOR DOMESTIC APPLICATIONTechnical Details and Working of 15.84 KWh Battery Pack

Overall System Specification :

Parameter System-1 15.84 KWh

15.8 KWh Battery Pack with 2.4 KVA Inverter

Battery Pack 15.8 KWh, 12 Nos of 12 V, 110 AH Group-31 Battery

Inverter Charger 2400 VA, 48 V DC Input and 100 Vac, 50 Hz Output VoltageInverter Charger 2400 VA, 48 V DC Input and 100 Vac, 50 Hz Output Voltage

Max. Surge Load of Inverter 5000 VA Surge Capacity and 2800 VA Surge for 30 Sec.

Total Power Use in day time From Battery8-9 KWh/Day, Also We can Discharge The Battery up to Fullrating once in a while

Warranty of Inverter/Charger 5 Years

Warranty on Battery Pack 5 Years, however It will last 10-12 years at 50% DOD.

Working of SystemSystem will Charge the Battery in Night Hours and Use thatstored energy in Day Time according to battery Size.

Single Line Diagram for 15.8 KWh Battery Pack

Technical Details of Components

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Technical Details of Inverter Charger

Technical Details of Metal Enclosure :Dimension of the Enclosure will be vary according to Battery Pack Capacity

For 10.56 KWh Battery Pack.

Technical Details of Metal Enclosure :Dimension of the Enclosure will be vary according to Battery Pack Capacity

For 15.84 KWh Battery Pack.

Technical Details of Metal Enclosure

Enclosure description :Material : Sheet Steel with Powder CoatingEnclosure: Sheet steel 1.5 mmDoor: Sheet steel, Rear panel 1.5- 2.0 mm / PC TransparentBase: sheet steel, 1.5 mm Mounting plate

Surface finish: Enclosure, door and rear panel: dip coat-primed, powder-coated on theoutside, textured paint Mounting plate: Zinc-plated Base: Dip coat-primed and powder-coated, textured paint

Color: RAL 7035IP Protection : IP2X

Enclosure will contain Battery Pack along with BatteryInterconnection, Charger to Battery Pack Wiring, DC Switch, ACSwitch and space will be provided to install MPPT for Solar PVinstallation in Future.