Dong Guan Guang Cheng Electronic Co. Ltd.www.gce-polarbear.com

Mission

At GCE, we have one simple goal and one simple technology:

To build a 100%-green battery that is able to replace fossil fuel –powered engine and environmentally hazardous lead-acid battery.

To build a high performance, light-weight battery with robust charging and discharging systems in order to truly deliver the advantages of a multiple-cell phosphate battery pack.

Why LiFePO4 Battery?[The Advantages of LiFePO4 Battery]

Safety and Eco-FriendlyLi-Phosphate material has much better thermo-resistance capability; does not explode under extreme conditions. It has complete Eco-Friendly chemistry vs. poisonous Lead-Acid and Ni-MH.

Performance and StabilityMuch higher instantaneous power output than conventional batteries. Capacity of a multi-cell 48V battery (with 32 10Ah cells) tested showed more than 90% remains after 300+ life-cycles. Estimated capacity after 1000 life-cycles is 70%. These battery life-cycles are about 5 years in normal operation for a 48V electric motorcycle.

Cost-Effective Much cost-effective comparing with conventional battery in terms of costs of expensive controller system and professional maintenance tasks.

Features and Chemistry ComparisonBattery Type Lead-Acid Lithium Cobalt Lithium Manganese Lithium Phosphate

Cell Voltage 2 3.7 3.7 3.2

Watts/kg Ratio 30-45 110-150 110-150 140-190

Watts/Dimension 50-100 350-450 250-350 100-150

Life-Cycles 300-500 500-1000 500-1000 1000-2000

Self-Discharge/Month 4-5% <5% <5% <3%

Memory Effect High None None None

ProtectionsOver-Charge/Discharge

Over-Current, Short Circuit (S.C.)

Not RequiredRequired

(Must installed for Safety)

Required(Must installed for

Safety)

Optional(Better life-cycle

and performance)

Fast Charging &Discharging No Acceptable Acceptable Good

Operation Temperature

<0℃No or Low Output

>55℃ or <-20℃No or Low Output

>50℃No or Very Low Output

-20℃-60℃Normal Output

SafetyGood

S.C.- Explosive @High Temp.

WorstFire/Explosion @

High Temp.

BadFire/Explosion @

High Temp.

BestNo Explosion

No Fire

Ecological High PollutionLead / Sulfate Acid No Pollution No Pollution No Pollution

Economical Good Better Good Good going to Best

ApplicationsPolar Bear’s Focus● Electric Motorcycles● Electric Gardening Tools● Light Farming Machines

• EV – E-Bike, Electric Motorcycle, Electric Scooter, Electric Car, Hybrid Car, Golf Cart, Electric Boat, Mobile Aides

• Gardening – Electric Tiller, Lawn Mower, Electric Chain Saw, Trimmer.

• Utilities – Forklift, Snow Remover• Renewable Energy Storage - Solar, Wind

General Applications

[Business Focus] [Product Attributes: Safety & Mobility]

Current Product Line12V: 5Ah, 7.5Ah and 10Ah 24V: 5Ah, 7.5Ah and 10Ah36V: 7.5Ah, 10Ah and 20Ah48V: 7.5Ah, 20Ah and 40Ah

Polar Bear Power Batteries feature robust safety designs with built-in BMS providing protections against:a. Over-Charging b. Over-Dischargingc. Over-Current d. Short-Circuit

The advanced built-in BMS with ICMS(Individual Cell Monitoring System) uses individual control IC to accurately monitor charging and discharging voltage at each cell in order to keep the best of capacity balance for all cells, which greatly optimize the performance of a multi-cell LiFePO4 battery pack.

Polar Bear Technologies

Technology for Efficient Cell BalanceThe essential of Cell Balance Management is the

capability in keeping high capacity and performance of a battery after long-term operation. Our BMS starts at the beginning of battery cell testing and matching, not after the assembly of a battery.

Technology for Real-World PerformanceWith the advanced built-in BMS featuring

ICMS(Individual Cell Monitoring System) design, robust protections are assured at any operation condition. Discharging is promptly activated at right time with right amount of power needed at operation. No energy is wasted.

Technology for Cost-EffectivenessInstead of using expensive components on

complicate circuit boards, we invested in Cell Testing and Matching Process to optimize the balance system. Simplicity is the idea to design a logical BMS for practical and cost-effective application.

• Nano-Grade Processed Cells• 98% +/- 2% at first 130 Life-Cycles• <15% Cap. Decreasing aft 800 LCs• Built-in Auto Cell Monitoring BMS• Longer Operational Discharging• Complete Cell Protections

Cell Testing Technology[Cell Matching and Balance System]

Cell Chemistry Stabilizing

Capacity Sorting

Cell Resistance Measurement

Cell Balance Initialization

Back-Draw Voltage Testing

Cell Current Measurement

Voltage Sorting& Cell Matching

Module Assembly

Technology in Production[Innovative Quality Assurance]

Module Voltage Measurement

Run-Card Recording

Short-Circuit Prevention

Charging/Discharging Test

Output Current Test

Over-Current Protection Test

Full-Function Testing & OQC

Capacity Balance Measurement

Quality-Oriented Designs1. Protection Boards2. Production Process3. Testing Process

ODM Capability[Vertical and Virtual Integration]

Mechanical & Electrical Integration

Product Analysis

Battery Design

TotalEfficiencyAnalysis

PowerSystem Analysis

Safety,Functionality

& Form

BMS &Power System

Design

Quality &Manufacturing

Technology

SupplyChain

Integration

Performance& Cost

Effectiveness

Product Demo 1[ISEKI 24V10Ah Electric Tiller]

SimpleJust hold the start handle to operate the tiller and release to stop.LightThe total weight is well under 21kg for the tiller and just 2.7kg for the battery. QuietNo loud engine noise. A neighbor-friendly advantage let you enjoy the nature more.SafeAn AC 300W output supplies sufficient power for desire operation time while safety features are well designed electrically and mechanically. Healthy and CleanNo air pollution. No bad smell when storing in garage or in a car for delivery.

Product Demo 2[Kentfa 48V20Ah Electric Motorcycle]

UL-Certified SafetyNot only the body mechanism but also the battery electricity are certified by UL, passing numeric strict safety tests.PowerfulPolar Bear Battery provides this bike with 650W output for up to 12 degrees of uphill ride. It’s easy to enjoy up to a 60KM of riding with a top speed at 45Km per hour. Eco-FriendlyNo air pollution, no gas-exhaust smell. A fine act to reduce global warming and acid-rain. You actually can save money to save the globe. EconomicalLow cost in long-term owner-ship, only $0.6 cent per mile in mileage cost, according to public utility charge in Taiwan. Much less cost in mechanical maintenance; and no cost in frequent oil-change services.

AboutAbout The CompanyGCE was founded in 2006 with a 7500m² facility site located in Chang-An Town, Dong Guan City, Guang Dong Province; about 40 min. of driving distance from HK. GCE had an initial capital of US$10,000,000. The annual revenue averaged US$4,000,000 in 2009 and 2010; and expected US$15,000,000 in 2010.

Production Equipment & TechnologiesFor quality and safety assurance of a battery, GCE itself is

equipped with 2 SMT lines, 2 DIP lines for BMS PCB assembly; and vibration, temperature/humidity testing equipments. GCE’s engineers alsodeveloped many innovative equipments for cell testing and matching process. These production

technologies were based on years of battery making experience from many top professionals in battery industry.

These industry first-seen techniques include Automatic Cell Balance Initialization, Automatic Capacity Measurement, BMS Circuit Testing and Energy-Saving Charging System.

Production CapabilityCurrent production capacity at GCE is 60K of 24V10Ah and 36K of 48V20Ah Lithium Phosphate Batteries per year, totaling 48.4M watts-h per year.

Employee DistributionAdministration Staffs 16%R&D Engineers 12%Production Engineers 8%Production Operators 64%

Thank You

For more product information, please visit our web site at: www.gce-polarbear.com