Telecom Batteries

Introduction to our offer

May 2010

The main challenges for Batteries

3 Outperforming Solutions

Exposure Typical Problems Solutions

Battery Performance Low cost batteries have extremely low performance at high temperature and/or in cycling conditions. (typically ¼)

Select right batteries depending on temperature and grid conditions .

High Ambient Temperature Both Battery design life and Cycle life are reduced (Typ 50% at 30-35C)

Temp Controlled Storage and Installation in Cooling Cabinet

Repeated Power Outages Battery does not have time to recharge due to Repeated Cycles.State of Charge will decline and Batteries will dry out and fail.

Use New Battery can fast recharge or operate in partial state of charge

OverCharge Incorrect rectifer settings (ie Boost) can significantly shorten battery life.Battery is overheated (risk of Thermal runaway/ leaking) Design life reduced to 1/5.

Review Rectifier settings or use Float Voltage recharge

Why are Batteries failing so early in many countries ?

Electric AC Grids drive needs for different batteries

Stable AC Grids

Float Battery

Source: NASA GSFC

No AC Grid

Deep Cycling Battery

Very Unstable Grids

PSOC Cycling Battery

40% of the worlds population lives with no electricity or with unstable electric grids

10 years Design float LifeHigh Cyclic performance

Range : 13Ah – 170Ah

Telecom Products Range

AGM

Silver Technology

PSOC Cyclic PerformanceSpecially Designed for Unstable GridRange 84Ah-142Ah

AGM

Blue Technology

OPZV

Solar Technology

Deep Cycle PerformanceDesigned for Off grid

Range : 200Ah-2000Ah

Stable Grid

Unstable Grid

Off Grid

AGM

Red Technology

15 years Design float LifePure Lead TechnologySpecially design for Stable gridRange from 50Ah to 180Ah

Thin-plates = more plates per cell = increased surface area Minimal spacing between plates, typically <1mm Very low internal resistance, hence:

High volumetric power density High gravimetric power density Rapid recharge capability (no current limit) Superior Low Temperature Performance

Very high pack compression High Cycling Capability

 Premium Plastic Standard Plastics

NorthStar PPO PC/ABS ABS PP

Halogen free V0 Yes Yes No No

High temp (65°C) sustainability Yes No No Yes

Ability to be left beyond end-of-life without degrading Yes No No  Yes

Ability to maintain high pack compression with minimum deflection ***** **** *** *

Material cost * ** ** ***

NorthStar PPO Plastic Technology Designed for long and reliable life in any condition

NorthStar Superior Technology

NSB Red Technology

NSB Red Star TechnologyTM using Pure Lead has been developed to provide exceptionally long float life for telecommunication applications under stable AC grid conditions.

Design float life of 15-years @ 20°C and @ 2.27VPC

High energy density

Non-halogenated V0 plastic container and lid

Stable up to 65°C

Twin venting port

Available Q4 2010

DimensionsCapacity /Ah

Height /mm Width /mm Depth /mmNSB60 Red 263 108 287 60NSB92 Red 264 108 396 92NSB100 Red 287 108 396 100NSB100X Red

264 110 520 100

NSB150 Red 320 125 283 150NSB180 Red 320 125 560 180

NSB Silver Technology

70

80

90

100

110

0% 20% 40% 60% 80% 100% 120% 140% 160% 180% 200%

Design Float Life

Cap

acit

y

NSB Silver Alloy

Calcium alloy

Patented Silver Alloy• Increased Life under Float conditions• Higher Temperature Performance +65C • Higher Cycling Capabilities• Reduced grid corrosion rate 10 years Design float Life

Superior Cycling Performance

12V Front Terminal 12V Top Terminal• NSB 40 FT . NSB13• NSB 60 FT . NSB40• NSB 90 FT . NSB 75• NSB 100 FT . NSB90• NSB 110 FT . NSB125• NSB 155 FT• NSB 170 FT

• Easy and Safe Set up

- No Boost Voltage required

- No Full recharge required after each cycle - PSOC Capable

• Faster recharge

• High cyclic capabilities - Up to 2500 cycles at 25% DOD

NSB Blue Technology – Designed for Unstable Grid

NSB 100 BLUE and NSB170 BLUE now available Up 2 to 3 Times more cycles than NSB Standard .

0%

20%

40%

60%

80%

100%

0 4 8 12 16 20 24

Sta

te O

f C

har

ge

Recharge Time /hours

Standard AGM22-hour recharge

NBS Blue2-hour recharge

NSB Blue Technology – Designed for Unstable Grid

Fastest Float Recharge

• Blue Technology can repeatedly cycle in lower State of charge window utilizing full rectifier power

• Standard AGM needs to be recharged to >103%

Unstable Grid Field Trial - Bangladesh

0 250 500 750 1000 1250 1500 1750 2000 2250

10

10.5

11

11.5

12 SE Asia Cycle

Number of Cycles

On-

load

vol

tage

/V

Blue Battery

Standard AGM

In these conditions, Standard AGM will fail after few months. The Blue Battery has completed over 1800 cycles in 1 year of operation and is still working

21

22

23

24

25

26

27

28

29

0 30 60 90

Days

Volta

ge

February March April

Increase in battery life

Unstable AC Grid Outages

Simulated laboratory cycling confirms the large increase in cycle life with the Blue Battery

NSB Solar – OPZV Technology

Designed to DIN 40742 IEC 61427 Solar tested 20 years life time @ 20°C Horizontal and Vertical operation Maintenance Free High Capacity Density and Cyclic Capabilities Halogen free VO container material Operational temperature -40°C - +55°C Panzerpole touch protected DIN 40050 Degassing system Free of leakage Low self discharge Recyclable

• Extra step for horizontal cells during manufacturing

• 100% quality control:

• Pressure tightness test for each single cell

Where and when to use the NSB Technology

10

100

Silver Blue Solar

AC G

rid o

utag

es(h

ours

per

mon

th)

300

720 Off Grid

Unstable Grid

Stable Grid

PSOC Cyclic

High Cyclic

Standby

NorthStar.More than just a battery company.