Phase Three "Smart" battery charging technology provides significant benefits over traditional float chargers whose output voltage droops under heavy loads, and fails to attain absorption voltage levels recommended by battery manufacturers as part of a proper charge cycle. These issues are particular significant in Emergency Vehicles applications where rapid recharge is required while powering DC loads, and reliable service life of a battery is critical. Smart Chargers interact with batteries and deliver a three stage charge process which provides for fastest recovery and ideal battery condition, maximizing performance and life.
Adaptability to different battery types and charge conditions is another important feature. A selector switch adjusts output voltage to adapt to proper charging of gel-celled, lead acid, and AGM battery types. An optional temperature compensation sensor adjusts output for ideal voltage based on changes to ambient temperatures. This improves performance and extends battery life.
Features
• “Smart” circuitry provides three stage charging—bulk, absorption, float
• Gel-Cell/Flooded Lead-acid/AGM battery type switch selects optimum
charge/float voltages
• Multiple isolated outputs - charge independent battery banks*
• Optional sensor adjusts output voltage based on battery temperature*
• Current limiting - charges dead batteries without overload
• Use as a power supply; can power Radios/MDT’s without a battery in line
• Built to last—rugged stainless steel case with circuitry hardened for hostile environments
*Except PT-7 |
| 12 Volt |
24 Volt |
| PT-7 |
PT-24-8 |
| PT-14 |
PT-24-13 |
| PT-25 |
PT-24-20 |
| PT-40 |
PT-24-40 |
| PT-70A |
PT-24-45F |
|
PT-24-60F |
|
PT-24-95F |
Detailed specifications below. |
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Specifications
12 Volt Models |
PT-7 |
PT-14 |
PT-25 |
PT-40 |
PT-70A |
Input VAC
(50-60 Hz.) |
88-132 or
176-264 |
85-264 |
90-132 or
180-264 |
85-135 or
170-270 |
90-264 |
Input Amps @ Full Load |
@ 115 VAC |
2 |
2.8 |
6.5 |
8.5 |
12 |
@ 230 VAC |
1 |
1.4 |
4 |
4.3 |
6 |
P.F. Rating |
>.65 |
.98@115V
.95@230V |
.7 |
.7 |
.95@230V
.98@115V |
Max Output Amps |
@ 115 VAC Input |
7 |
14 |
25 |
40 |
64 |
@ 230 VAC Input |
7 |
14 |
25 |
40 |
70 |
Output Banks |
2 |
3 |
3 |
3 |
3 |
Battery Capacity
Amp-Hours |
14-70 |
28-140 |
50-250 |
80-400 |
140-700 |
Operating Temp.
Rating Ref. |
T-2 |
T-2 |
T-7 |
T-1 |
T-2 |
Weight; Lbs./Kg. |
3.2/1.5 |
8/4 |
8.2/4 |
12/6 |
15.2/7 |
Case Size Ref. |
A-1 |
A-2 |
A-2 |
A-3 |
A-5 |
Optional Temp
Sensor Model |
N/A |
TCS-12/24 |
TCS-12/24 |
TCS-12/24 |
TCS-12/24 |
24 Volt Models |
PT-24-8 |
PT-24-13 |
PT-24-20 |
PT-24-40 |
PT-24-45F |
PT-24-60F |
PT-24-95F |
Input VAC
(50-60 Hz.) |
85-264 |
90-132 or
180-264 |
85-135 or
170-270 |
90-264 |
207-253 |
207-253 |
207-253 |
Input Amps @ Full Load |
@ 115 VAC |
2.8 |
6.5 |
8.5 |
12 |
N/A |
NA |
N/A |
@ 230 VAC |
1.4 |
4 |
4.3 |
6 |
8 |
13 |
17 |
P.F. Rating |
.95@230V
.98@115V |
.7 |
.7 |
.95@230V
.98@115V |
.7 |
.7 |
.7 |
Max Output Amps |
@ 115 VAC Input |
8 |
13 |
20 |
37 |
N/A |
NA |
N/A |
@ 230 VAC Input |
8 |
13 |
20 |
40 |
45 |
60 |
95 |
Output Banks |
3 |
3 |
3 |
3 |
3 |
3 |
3 |
Battery Capacity
Amp-Hours |
16-80 |
26-130 |
40-200 |
80-400 |
90-450 |
150-600 |
180-950 |
Operating Temp.
Rating Ref. |
T-2 |
T-2 |
T-1 |
T-2 |
T-3 |
T-3 |
T-3 |
Weight; Lbs./Kg. |
8/4 |
8.2/4 |
12/6 |
15.2/7 |
12.2/6 |
34.0/15 |
34.0/15 |
Case Size Ref. |
A-2 |
A-2 |
A-3 |
A-5 |
A-4 |
A-7 |
A-6 |
Optional Temp
Sensor Model |
TCS-12/24 |
TCS-12/24 |
TCS-12/24 |
TCS-12/24 |
TP |
TP |
TP |
Case Size
Ref |
Inches |
Centimeters |
H |
W |
D |
H |
W |
D |
A-1 |
10.5 |
5.0 |
2.8 |
26.7 |
12.7 |
7.1 |
A-2 |
12.5 |
7.7 |
4.3 |
31.8 |
19.6 |
10.9 |
A-3 |
14.1 |
9.5 |
4.0 |
35.8 |
24.1 |
10.2 |
A-4 |
15.5 |
9.7 |
5.0 |
39.4 |
24.6 |
12.7 |
A-5 |
16.7 |
9.8 |
6.7 |
42.4 |
24.9 |
17.0 |
A-6 |
19.5 |
12.2 |
8.2 |
49.5 |
40.0 |
20.8 |
Temperature Rating References
T-1 |
-25˚C to +60˚C; Derate linearly from 100% @ 50˚C to 75% @ 60˚C |
T-2 |
-10˚C to +60˚C; Derate linearly from 100% @ 50˚C to 80% @ 60˚C |
T-3 |
-20˚C to +50˚C; Derate linearly from 100% @ 45˚C to 70% @ 60˚C |
Nominal Output Voltages at Gel/Flooded Switch Settings
(Without Temperature Compensation option installed or at 22.2˚C (72˚F) with Temperature Compensation option installed.)
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12 Volt Models
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24 Volt Models
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32 Volt Model
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Setting |
Charge @
50 % load
|
Float @
.5 amp load
|
Charge @
50 % load
|
Float
@ .5 amp load
|
Charge
@
50 % load
|
Float @
.5 amp load
|
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14.0 VDC
|
13.6 VDC
|
28.0 VDC
|
27.2 VDC
|
37.3 VDC
|
36.2 VDC
|
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14.2 VDC
|
13.4 VDC
|
28.4 VDC
|
26.8 VDC
|
37.8 VDC
|
35.7 VDC
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Power Returned to Battery by 14 Amp 3-Step Charger vs 15 Amp Float Charger
Conditions: 200 AH Battery, 75% Charged, 4 Amp Constant Load

The graph depicts the incremental power returned to batteries using a three step process which controls voltage depending on battery and load conditions, in comparison to float type chargers that regulates to a single end of charge voltage set point.
Temperature Compensation:
- 5 mV per cell per ˚C. Sensor supplied with 25' cable and plug-in connector
Protection (all models):
Input/Output Fuses, Current Limiting, Thermal Protection, Forced Air Cooling, Drip Shield
Remote Panel, Model RP:
LED's indicate charger output stage. Button allows manual reinitialization of three stage charge cycle. Supplied with 25' cable and plug-in connector. Panel dimensions: 3" H x 4.75" W
Optional Accessories
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Battery Charger Monitor
Click Here
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Temperature
Compensation Sensor
Model: TCS-12/24 shown - see above for applicable sensor depending on charger model.
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Kwik-Eject™
Click Here
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Digital Instruments & Monitors
Click Here
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