Phase Three Battery Chargers for mobile applications, 12V DC, 24V DC and 32V DC, 7 - 95 amp power rating by Newmar Powering the NetworkPhase Three Series
Battery Chargers

Three Stage “Smart” Chargers

Phase Three “Smart” battery charging technology is now available in a wide range of power levels, allowing you to select the right size, features and flexibility you require for virtually any application from providing quick recharge of auxiliary batteries in vehicles parked in the station house, to powering continuous loads and maintaining peak charge in large battery systems in remote communication sites as well as industrial generator and marine applications. These chargers interact with batteries to put them through the optimum three stage charge process which provides for fastest recovery and ideal conditioning, maximizing battery performance and extending battery life.

A selector switch adjusts output voltage to adapt for gel-cell/flooded lead-acid/AGM battery types. An optional temperature compensation sensor also adjusts output for ideal voltage based on changes in the batteries' ambient temperature. All models are housed in a rugged stainless steel with a durable white powder coat finish, and the internal circuitry is polyurethane coated for maximum corrosion resistance.



  • “Smart” circuitry provides three stage charging—bulk, absorption, float
  • Wide model range covers battery system ratings from 14-950 amp-hours
  • Gel-Cell/Flooded Lead-acid/AGM battery type switch selects optimum charge/float voltages
  • Multiple isolated output banks; ammeter indicates total output current (except PT-7)
  • Optional sensor adjusts output voltage based on battery temperature (except PT-7)
  • Current limiting-prevents damage from overloading
  • Charger status clearly displayed with L.E.D. and/or audible indicators or optional remote panel
  • Use as a power supply; can power loads without a battery in line
  • Built to last—rugged stainless steel case with a durable white powder coat finish with drip shield and polyurethane coated internal circuitry
  • Numerous Safety and EMC Compliances
  • Two year parts and labor warranty


12 Volt 24 Volt 32 Volt
PT-14W PT-24-8W PT-32-25W
PT-25W PT-24-13W
PT-40 PT-24-20
PT-80 PT-24-45U


12 Volt Models PT-7 PT-14W PT-25W PT-40U PT-80
Input VAC
(50-60 Hz.)
88-132 or
85-264 90-132 or
90-264 90-264
Input Amps
@ Full Load
@ 115 VAC 2 2.8 6.5 6.8 12
@ 230 VAC 1 1.4 4 3.4 7
P.F. Rating >.65 .93@230V
.7 .98 @ 115V
.95 @ 230V
Max Output Amps 7 14 25 40 80
Output Banks 2 3 3 3 3
Battery Capacity
14-70 28-140 50-250 80-400 160-800
Operating Temp.
Rating Reference
T-1 T-2 T-4 T-5 T-7
Case Size Ref. A-1 A-2 A-2 A-3 A-5
Weight; Lbs./Kg. 3.2/1.5 8/4 8.2/4 11/6 15.2/7
Optional Temp.
Sensor Model
N/A TCS-12/24 TCS-12/24 TCS-12/24 TCS-12/24
Remote Panel Model N/A RP RP EVM-12-2 RP
Equalize Option No Yes Yes No Yes
Output Indicator Ref. M-1 M-3 M-3 M-3 M-3
Compliance Ref. CG, CE CG, CE CG CG CE
 24 Volt Models PT-24-8W PT-24-13W PT-24-20U PT-24-45U PT-24-60W PT-24-95U
Input VAC
(50-60 Hz.)
85-264 90-132 or
90-264 90-264 207-253 90-264
Input Amps
@ Full Load
@ 115 VAC 2.8 6.5 6.8 12 NA 26
@ 230 VAC 1.4 4 3.4 7 13 14
P.F. Rating .93@230V
.7 .98 @ 115V
.95 @ 230V
.7 .95@230V
Max Output Amps 8 13 20 45 60 95
Output Banks 3 3 3 3 3 3
Battery Capacity
16-80 26-130 40-200 90-450 120-600 180-950
Operating Temp.
Rating Reference
T-2 T-3 T-5 T-8 T-6 T-8
Case Size Ref. A-2 A-2 A-3 A-5 A-6 A-6
Weight; Lbs./Kg. 8/4 8.2/4 11/6 12.2/6 24.1/11 24.5/11
Optional Temp.
Sensor Model
TCS-12/24 TCS-12/24 TCS-12/24 TCS-12/24 TP TCS-12/24
Remote Panel Model RP RP N/A RP N/A RP
Equalize Option Yes Yes Yes No No Yes
Output Indicator Ref. M-3 M-3 M-3 M-3 M-2 M-3
Compliance Ref. CG, CE CG CG EN, CE EN, CE EN, CE
32 Volt Model PT-32-25W
Input VAC
(50-60 Hz.)
Input Amps
@ Full Load
@ 115 VAC 15
@ 230 VAC N/A
P.F. Rating .7
Max Output Amps 25
Output Banks 3
Battery Capacity
Operating Temp.
Rating Reference
Case Size Ref. A-4
Weight; Lbs./Kg. 12.2/6
Optional Temp.
Sensor Model
Remote Panel Model N/A
Equalize Option No
Output Indicator Ref. M-2
Compliance Ref. EN, CE

Case Size

Inches Centimeters
Ref 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 13.85* 9.5 4.8* 35.2* 24.1 12.2*
A-4 13.8A 9.8 5A 35A 24.9 12.7A
A-5 14.8B 9.6 5.6B 37.6B 24.4 14.2B
A-6 17.5C 12 7.2C 44.5C 30.5 18.3C
* Add .75” (1.9 cm) to height and 1.35” (3.4 cm) to depthA Add 1.27” (3.2 cm) to height and 1.1” (2.8 cm) to depthB Add 1” (2.54 cm) to height and .5” (1.27 cm) to depthC Add 2” (5.08 cm) to height and 1” (2.54 cm) to depth

Temperature Rating Reference:

T-1 -10°C to +45°C; Derate linearly from 100% @ 0°C to 80% @ -10°C
T-2 -10°C to +60°C; Derate linearly from 100% @ 40°C to 60% @ 60°C
T-3 -10°C to +60°C; Derate linearly from 100% @ 50°C to 60% @ 60°C
T-4 -10°C to +60°C; Derate linearly from 100% @ 40°C to 60% @ 60°C
T-5 -20°C to +60°C; Derate linearly from 100% @ 50°C to 75% @ 60°C
T-6 -20°C to +50°C; Full output
T-7 -20°C to +70°C; Derate linearly from 100% @ 45°C to 50% @ 70°C
T-8 -20°C to +70°C; Derate linearly from 100% @ 50°C to 50% @ 70°C

Output Indicator References

M-1 Total output ammeter
M-2 Charge/Float L.E.D.
M-3 Total output ammeter and charger status L.E.D.'s/Alarms

Compliance References*

See matrix for applicable models

UL UL 1950 (Per DNB report)
CG USCG CFR 183.410 (Ignition protected)
EN EN 60335-1, EN 60335-2-29
CE Carries the CE Mark
* Numerous other Safety and EMC compliances may also apply. Contact factory if further compliance information is required.

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.)

12 Volt Models 24 Volt Models 32 Volt Model
Charge Float Charge Float Charge Float
Setting @ 50% load @ .5 amp load @ 50% load @ .5 amp load @ 50% load @ .5 amp load
Gel-Cell 14.0 VDC 13.6 VDC 28.0 VDC 27.2 VDC 37.3 VDC 36.2 VDC
Flooded/AGM 14.2 VDC 13.4 VDC 28.4 VDC 26.8 VDC 37.8 VDC 35.7 VDC

Typical Charging Curve

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

Remote Indicator Panel for Phase Three Series Mobile Mount Battery Chargers, model RP, image by Newmar Powering the Network

Remote Indicator Panel, Model: RP

(Not available for all models - refer to Specification Matrix above)

Battery / Charger Monitor, 12V DC, 2 Battery Banks for use with Newmar PT-40
Remote Panel, model EVM-12-2, for us with model PT-40 only
Enables monitoring of when the battery charger is “on” and the batteries’ state of readiness, at a glance of two (2) battery banks only

Temperature Compensation Sensor, model TCS-12/24, 12V DC and 24V DC, for mobile mount Phase Three Series Battery Chargers image by Newmar Powering the Network
Temperature Compensation Sensor
Model: TCS-12/24 shown (see Specification Matrix above for applicable sensor depending on charger model)