Exide Technologies Battery Charging and Storage Guidelines User Manual

Exide Technologies Special machinery

Advertising

Note: This information applies ONLY to 12 volt single lead acid batteries of the types listed.

WARNING: Data is not necessarily valid for conditions where multiple 12 volt batteries are connected in strings (series or parallel)

See notes below the data table for battery strings.

Recommend boost at

or before this SOC

before battery use.

Lead Acid Battery Types

Bulk Charging

(Constant Current)

12 volt Battery

Absorption Charging

(Constant Voltage)

12 volt Battery

Float Charging

(Constant Voltage)

12 volt Battery

Trickle Charging

(charge maintenance

during extended

storage)

Temperature Compensation

Open Circuit

Voltage (OCV)

@ 20% State of

Charge (SOC)

Open Circuit

Voltage (OCV) @

50% State of

Charge (SOC)

Open Circuit

Voltage (OCV) @

60% State of

Charge (SOC)

Open Circuit

Voltage (OCV)

@ 70% State of

Charge (SOC)

Open Circuit

Voltage (OCV)

@ 90% State of

Charge (SOC)

Special notes

Other Guidelines

Standard Flooded/Wet

Automotive SLI (Calcium)

Exide Select

Exide Classic

Exide Commercial

Exide Cutting Edge

Exide Marine Starting

Flooded SuperCrank
Flooded PowerSport

Charge at a constant

current rate of no

more than 10 times

to a voltage of

14.8V (example; For

C20=100Ahr, the

max charge current

is 10x5A or 50A).

Charge with 14.8V -

15.0V limit for 12 to 24

hrs or when current

drops below 1% of the

C20 rating (example;
C20=100Ahr, the low

current shut off is 1%x

100 or 1A).

13.5v - 13.8

Charge voltage on point -

12.60v

Charge voltage off point -

13.5v

Limit current to 0.4 times

Charging Temperature Compensation:

All the listed charging voltages

are appropriate for a temperature range of 15-25ºC (68-77ºF). For average
operating temperatures below this range (colder than) the maximum voltage
set point should be compensated with an increase at a rate of 0.063 Volts
Per Cell (0.38 Volts for a 12 v battery) for every 10ºC (18º F.) For average
operating temperatures above this range (warmer than) the maximum
voltage set point should be compensated with a decrease at a rate of 0.063
Volts Per Cell (0.38 Volts for a 12v battery) for every 10ºC (18º F.)
Example: at 95ºF and 14.2 volt set point Corrected Voltage = 14.2 + (((95-
77)/18) x (0.38)) = 14.58 volts

Not

recommended

12.44v

12.52v

12.60v

12.77

Battery Temperature: Batteries should be brought to a temperature of at least 60ºF (15ºC) for
most efficient charging and below 85ºF (30ºC) to limit over heating effects.
AC Ripple Charge Limitations: Some DC chargers will have what is referred to as an AC ripple
wave-form to the charging input. Excessive ripple can cause battery heating and gassing resulting in
reduced life. Ripple current excursions during the float charging phase should not exceed 5 Amps
for every 100 AH of nominal capacity (Example: 4 amps for 80 AH battery) Ripple voltage
excursions during float should not exceed +/- 5% of the float voltage. (Example: +/- 0.70 volts at
13.8 volts)
Operating Temperature: The recommend operating temperature range is 10ºC - 30º (50ºF -86ºF)
for optimal operation. Lower temperatures will limit capacity output. Higher temperatures may
reduce life. Maximum operating temperature is 50ºC (122ºF).

Storage: For open circuit storage it is recommended that the battery be stored indoors in a
clean, dry location. Never store (or operate) in an airtight enclosure. Keep away from direct
heat sources. Storage temperature should be between 50ºF - 77ºF (10ºC - 25ºC). Batteries
should be disconnected from all potential load sources during storage. Batteries should be
fully charged prior to storage. Batteries should be boost charged every 6 months or when
the battery voltage reaches 12.52 volts. Storage at elevated temperatures will result in
accelerated rates of self discharge. A general rule of thumb is that for every 18ºF (10º)
above 77ºF (25ºC) the time before boost charging will be halved. Storage without proper
charge can result in excessive sulfation and can be detrimental to battery performance and
life.

Flooded/Wet Extreme

Cycling (Calcium)

Exide Extreme

Exide Marine Dual Purpose

Charge at a constant

current rate of no

more than 10 times

to a voltage of

14.8V (example; For

C20=100Ahr, the

max charge current

is 10x5A or 50A).

Charge with 14.8V -

15.0V limit for 12 to 24

hrs or when current

drops below 1% of the

C20 rating (example;
C20=100Ahr, the low

current shut off is 1%x

100 or 1A).

13.5v - 13.8

Charge voltage on point -

12.60v

Charge voltage off point -

13.5v

Limit current to 0.4 times

Charging Temperature Compensation:

All the listed charging voltages

Not

recommended

12.44v

12.52v

12.60v

12.77

Flooded/Wet Deep Cycle &

Marine (Antimony)

Exide Marine Deep Cycle

Exide Special Heavy Duty

and Floor Scrubber

Charge at a constant

current rate of no

more than 10 times

to a voltage of

14.7V (example; For

C20=100Ahr, the

max charge current

is 10x5A or 50A).

Charge with 14.7V -

14.9V limit for 12 to 24

hrs or when current

drops below 1% of the

C20 rating (example;
C20=100Ahr, the low

current shut off is 1%x

100 or 1A).

13.2v - 13.4v

Charge voltage on point -

12.60v

Charge voltage off point -

13.2v

Limit current to 0.4 times

Charging Temperature Compensation:

All the listed charging voltages

12.1v

12.44v

12.52v

12.60v

12.77

Gel cell

Exide Prevailer

Charge at a constant

current rate of no

more than 10 times

to a voltage of

14.1V (example; For

C20=100Ahr, the

max charge current

is 10x5A or 50A).

Charge with 14.1V -

14.4V limit for 12 to 24

hrs or when current

drops below 1% of the

C20 rating (example;
C20=100Ahr, the low

current shut off is 1%x

100 or 1A).

13.5v - 13.8v with

current limited to 4

times I

Charge voltage on point -

12.75v

Charge voltage off point -

13.5v

Limit current to 0.4 times

Charging Temperature Compensation:

All the listed charging voltages

are appropriate for a temperature range of 15-25ºC (68-77ºF). For average
operating temperatures below this range (colder than) the voltage set point
should be compensated with an increase at a rate of 0.05 Volts Per Cell (0.3
Volts for 12v battery) for every 10ºC (18º F.) For average operating
temperatures above this range (warmer than) the voltage set point should be
compensated with a decrease at a rate of 0.05 Volts Per Cell (0.3 Volts) for
every 10ºC (18º F.)
Example: at 95ºF and 14.2 volt set point Corrected Voltage = 14.2 + (((95-
77)/18) x (0.3)) = 14.5 volts

12.0v

12.40 v

12.50v

12.60v

12.90v

Storage: For open circuit storage it is recommended that the battery be stored indoors in a
clean, dry location. Never store (or operate) in an airtight enclosure. Keep away from direct
heat sources. Storage temperature should be between 50ºF - 77ºF (10ºC - 25ºC). Batteries
should be disconnected from all potential load sources during storage. Batteries should be
fully charged prior to storage. Batteries should be boost charged every 6 months or when
the battery voltage reaches 12.7 volts. Storage at elevated temperatures will result in
accelerated rates of self discharge. A general rule of thumb is that for every 18ºF (10º)
above 77ºF (25ºC) the time before boost charging will be halved. Storage without proper
charge can result in excessive sulfation and can be detrimental to battery performance and
life.

Flat Plate and Spiral AGM

Exide Edge

Exide Vortex

Exide Roadforce

Exide MegaCycle
AGM SuperCrank
AGM PowerSport

Charge at a constant

current rate of no

more than 10 times

to a voltage of

14.1V (example; For

C20=100Ahr, the

max charge current

is 10x5A or 50A).

Charge with 14.1V -

14.4V limit for 12 to 24

hrs or when current

drops below 1% of the

C20 rating (example;
C20=100Ahr, the low

current shut off is 1%x

100 or 1A).

13.6v - 13.8v with

current limited to 4

times I

Charge voltage on point -

12.75v

Charge voltage off point -

13.6v

Limit current to 0.4 times

Charging Temperature Compensation: All the listed charging voltages
are based on a temperature of 77ºF (25ºC). For average operating
temperatures below this range (colder than) the maximum voltage set point
should be compensated with an increase at a rate of 0.018 volts / ºF (0.032
volts/º C.) For average operating temperatures above this range (warmer
than) the maximum voltage set point should be compensated with a decrease
at a rate of 0.018 volts / ºF (0.03 volts/º C.)
Example: at 65ºF and 14.2 volt set point Corrected Voltage = 14.2 + ((77-
65) x (0.018)) = 14.42 volts

12.0v

12.40v

12.50v

12.60v

12.90v

Battery Temperature: Batteries should be brought to a temperature of at least 60ºF (15ºC) for
most efficient charging and below 85ºF (30ºC) to limit over heating effects.
AC Ripple Charge Limitations: Some DC chargers will have what is referred to as an AC ripple
wave-form to the charging input. Excessive ripple can cause battery heating and gassing resulting in
reduced life. Ripple current excursions during the float charging phase should not exceed 1 Amp.
Ripple voltage excursions during float should not exceed +/- 5% of the float voltage. (Example: 0.70
volts for 13.8 float voltage)
Operating Temperature: The recommend operating temperature range is 50ºF -85ºF (10ºC - 30ºC)
for optimal operation. Lower (colder) temperatures will limit capacity output. Higher (warmer)
temperatures will reduce life. Maximum operating temperature is 113ºF (45ºC)

Storage: For open circuit storage it is recommended that the battery be stored indoors in a
clean, dry location. Never store (or operate) in an airtight enclosure. Keep away from direct
heat sources. Storage temperature should be between 50ºF - 77ºF (10ºC - 25ºC). Batteries
should be disconnected from all potential load sources during storage. Batteries should be
fully charged prior to storage. Batteries should be boost charged every 6 months or when
the battery voltage reaches 12.7 volts. Storage at elevated temperatures will result in
accelerated rates of self discharge. A general rule of thumb is that for every 18ºF (10º)
above 77ºF (25ºC) the time before boost charging will be halved. Storage without proper
charge can result in excessive sulfation and can be detrimental to battery performance and
life.

Helpful explanations

1) Calcium and Antimony notations refer to metal alloy additives used in battery grids. These alloys have small effects on the charge voltages.
2) Bulk charging is the rapid and most aggressive re-charge method. It is typically only used in applications that need rapid recovery for deeply discharged batteries. Battery cooling may be required.
3) Absorption charge is an aggressive method where current is allowed to diminish as the battery naturally comes to full charge. It can be used for deeply or less deeply discharged batteries. Battery cooling may be required.
4) Float charge is a stage where the battery is charged at a lower voltage to slowly "top off" a slightly discharged battery.
5) Trickle charging is used to maintain charge during a long storage period. Charge voltage on/off points are very important to hold charge without damaging battery life.
6) State of Charge (SOC) is a highly variable number. Data should be taken as reflective of technology listed, but actual performance may be plus/minus 0.10 volts.
7) The reference to C

in the table above means 20 hour capacity as measured in amp-hours (Ahr). Similarly, I

refers to the current discharge rate for 20 hour capacity. For example, a C

of 100 Ahr would have an I

of 5 amps (5 amps times 20 hours = 100 Ahr)

8) To estimate C

capacity for 12 volt batteries - if RC rating is 200 minutes or less, multiply RC minutes times 0.58 = C

capacity. If RC rating is more than 200 minutes, multiply RC minutes times 0.50 = C20 capacity.

9) The term SLI refers to automotive batteries used for Starting, Lighting and Ignition (SLI)

For 24 volt systems that are comprised of two (2) 12 volt batteries connected in series that are charged with 24 volt chargers (with no parallel battery connections)

1) All charging voltages double (due to series connection) as listed in the above table.
2) All charging currents remain identical to 12 volt numbers as listed above (due to the series connection.)
3) All charging times remain identical to 12 volt numbers as listed above (due to the series connection.)

For 48 volt systems that are comprised of four (4) 12 volt batteries connected in series that are charged with 48 volt chargers (with no parallel battery connections)

1) All charging voltages increase X 4 (due to series connection) as listed in the above table.
2) All charging currents remain identical to 12 volt numbers as listed above (due to the series connection.)
3) All charging times remain identical to 12 volt numbers as listed above (due to the series connection.)

Advertising

Table of contents

Document Outline

Popular Brands

Popular manuals