AGM BATTERIES

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AGM BATTERIES
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WHAT ARE AGM BATTERIES?

• Presented By Bruce Purkey
• President
• Purkeys Fleet Electric

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NAFTA Battery Development Continues and Its Pace
Increases as Electric Demands Increase
Add Distilled Water Era
2000
1980
2002
1968
1860
1912
2005
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AGM BATTERIES

• AGM Batteries Were Invented In 1980
• Introduced In 1985 For Military Aircraft

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AGM BATTERIES

• Telecommunications/Electronics
• Proven Technology
• Battery Backup Systems
• Alarm Systems
• Telephones
• Traffic Signals/Counters

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AGM Absorbed Glass Mat

• VRLA means it is a variant of lead acid
• Not a wet cell, but a sealed lead acid or
  maintenance free type
• Slight pressure inside to improve the
  recombination process
• Valve Regulated means there is a pressure relief
  valve
• Valve Regulated Lead Acid

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Why the move to AGM batteries now?

• New engines are harder to start
• Generally tighter when dry to eliminate oil leaks
  for emissions (closed crankcase)
• Cold temperatures accentuate the tightness of the
  engine
• AGM batteries have low internal resistance,
  especially at time of starting engines
• Replacing Gel cells since they provide good
  discharge for driver comforts
• Can be discharged to lower levels of State of
  Charge
• Less sensitive to charge voltage than Gel cells
• Recharge faster
• Safest lead acid battery
• Will not spill or leak
• Little chance of explosion or corrosion
• Store very well losing only 1 to 3 of charge
  per month
• Do not tend to sulfate or degrade
• Withstand shock and vibration better

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AGM batteries give the driver a little more energy

• State Of Charge Comparison
• Charge Flooded AGM
• 100 12.65 12.8
• 75 12.40 12.60
• 63 12.30 12.45
• 50 12.20 12.30
• 25 12.00 12.00
• 0 11.80 11.80

CURRENT LVD SETPOINT WITH FLOODED CELL 12.3 V /
63 State Of Charge
WHAT LVD SETPOINT WITH AGM?
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J-2185 CYCLES
650 - 600 - 550 - 500 - 450 - 400 - 350 - 300
- 250 - 200 - 150 - 100 - 50 - 0 -
OF CYCLES
FLOODED925 CCA
FLOODED 700 CCA DUAL PURP.
AGM 925 CCA
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AGM BATTERIES

• Advantages
• Cycles
• 1.5 Times More Than Flooded Cell Comparable
• Vibration
• Can Withstand Severe Vibration
• Efficiency
• Recovers Faster
• Recharges To A Usable Point Faster
• Non-Spillable
• Can Be Mounted In Any Orientation

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AGM BATTERIES

• Disadvantages
• Acid Starved
• More Susceptible To Overcharge
• Cost

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AGM BATTERIES

• Different Batteries For Specific Applications
• Starting / Dual Purpose
• Dual Purpose / Deep Cycle

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IMPLEMENTATION OF AGM BATTERIES AT MY FLEET

• Presented By Carl Tapp, CDM/E
• Vice President of Maintenance
• P.A.M. Transport, Inc.

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Why Am I Here?
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New Tractors Came With AGM Batteries As Standard

• Tractor OEM is requiring AGM starting batteries
  with a specific engine.
• No Change Order required.

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Asked Questions At Last TMC

• Has anyone trained your fleet or dealership on
  AGMs?
• Has anyone justified a 100 per battery upcharge?
• Has anyone justified the added weight?
• Are you ready to upgrade or replace your testers?
• Are you ready to modify or replace your chargers?
• Have you modified your jumpstart procedures?
• Have you modified your in house and over the road
  battery replacement procedures?

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Educated Myself

• Research
• Asked A Lot of Questions

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Comparing Battery Types on Average Engine
Cranking Speed Cable Resistance 0.0008 ohms,
5W30 Oil,
90
85
RPM
67
-20 Deg C ( -4 Deg F )
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Comparing Engine Oil with 4X1000 CCA Batteries,
Cable Resistance 0.0008 Ohms
RPM
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STARTER RPM LOSS OIL COMPARISON
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DUAL PURPOSE (700 CCA) BATTERY PACK
5W30
10W30
15W40
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NO START
Current with 15W40 at 23 is 2600 amps.
Current with 10W30 at 3 is 2200 amps.
Current with 5W30 at -3 is 2000 amps.
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DUAL PURPOSE (700 CCA) BATTERY PACK vs. HIGH CCA
BATTERY PACK
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Regardless of what oil is being used, there is
not a significant difference between a dual
purpose (700 CCA) battery pack and a high CCA
battery pack.
5W30
10W30
15W40
NO START
TEMPERATURE
DUAL PURPOSE W/ 5W30
DUAL PURPOSE W/ 10W30
DUAL PURPOSE W/ 15W40
HIGH CCA W/ 5W30
HIGH CCA W/ 10W30
HIGH CCA W/ 15W40
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Now It Is Time To Implement Changes
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Train Technicians and Road Rescue

• How to identify
• How to handle them properly and safely
• How to test
• How to recharge if needed

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INVENTORY

• Double inventory
• Must now carry flooded cell and AGM batteries

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Testing

• Tester Must Be Compatible With AGM Batteries
• Software Changes May Be Necessary
• New Test Equipment May Be Required
• Tester reprogram or recalibration to include AGM

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Shop Charging

• Many Common Chargers Are Not Fully Compatible
  With AGM Batteries
• Some Chargers May Produce Severe Battery Damage
  in Only A Few Hours

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Multi-Channel Smart Charger

• Micro-controller added to each channel of the
  charger to limit the maximum allowed charging
  voltage, eliminating the chance to damage the
  battery.

AGM COMPATIBLE
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Roll-A-Round Charger

• Reconfigure the charger to limit the maximum
  allowed charging voltage, eliminating the chance
  to damage the battery.

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Summary

• New or reprogrammed testers
• New or reprogrammed wall chargers
• New or reprogrammed roll-a-round chargers
• Train technicians and road rescue
• New Procedures
• New Signs

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Bring on the AGM batteries.we are ready!
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THANK YOU!