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TDMC+ Teledyne Dual Mode Charger
Deeply Discharged or Sulphated Lead-Acid Battery Two Stage Charge Method
For any deeply discharged lead-acid battery, configure the charger for the two-stage charge mode as
follows:
• Connect (or Disconnect) a battery only when the charger is either unplugged from AC (off) or
when the display indicates "-not charging- ".
• Charger Voltage mode: Select charger voltage for 12V or 24V operation as appropriate for the
battery to be charged by pressing the button in Screen Section C.
Caution: If a 12V battery is charged with a 24V charge curve, the battery may be overcharged
causing potentially serious damage.
• Charger Current mode: Select for 6A to 1A as appropriate for the battery to be charged by
pressing the button in Screen Section D.
Caution: On deeply discharged batteries, Teledyne Battery Products recommends a 1A charge
curve and recommends not using a charge current (Amps) that is greater than 1/10 of the battery
capacity in Amp hours. Always follow battery Component Maintenance Manual (CMM) guidance,
consult the battery documentation, service bulletin or battery manufacturer for guidance or use
the lowest 1A setting.
• Charge Cycle End Condition: The Deeply Discharged or Sulphated Lead-Acid Battery Charge
Method ending condition is based on time. The time should be based upon the battery
capacity in amp hours, and the desired charging current. select an ending condition in hours in
Screen Section E.
• Observe the Battery Capacity in Amp Hours (Ah) as recommended by the battery CMM
section on Deep Discharge Recovery. Round this number to the nearest 5 Amp-hours.
• Observe the selected charge current (1A).
• Calculate the charge time using the equation or the table provided.
• Calculation method:
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Round the result down to the nearest 5 hours. If the result
returns less than 10 hours, the selected charge current is too
high, select a lower charge current.
• Table Method
▪ Select the row (1) that corresponds to the Battery
Capacity (Ah).
▪ Select the column (2) that corresponds to the desired
charge Current (A).
▪ Identify the Charge Time at the intersection of the
chosen row and column.
• Example 1: The Teledyne 7638-44 battery is a 24V, 44 Ah
battery, 1A charge:
▪ The battery capacity is 44Ah, round to 45.
• Divide 45/1 = 45
• 45 is already evenly divided by 5
▪ This column, row and result are marked in the table
Questions?
Write to:
support@teledynebattery.com
Or call: 1 (800) 456 0070 / 1 (909) 793 3131.
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)
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Charge Current (A)
1 2 3 4 5 6
2
80
80 40 25 20 15 10
75
75 35 25 15 15 10
70
70 35 20 15 10 10
65
65 30 20 15 10 10
60
60 30 20 15 10 10
55
55 25 15 10 10
50
50 25 15 10 10
1
45
45 20 15 10
40
40 20 10 10
35
35 15 10
30
30 15 10
25
25 10
20
20 10
15
15
10
10
Battery Charge Timetable
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