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November 21, 2016

High Power 12V battery chargers with very low noise for marine, display room, and trade shows

More lead acid battery chargers 6V, 12V, 18V, 36V, 42V, 48V

2 year warranty

Custom design and manufacture of state-of-the-art battery chargers, UPS, and power supplies for OEMs in a hurry!

1340 watt power supply for marine and commercial audio use line drawing of the high power low noise audio power supplies

Summary: Most high power battery chargers have significant 60 or 120 Hz ripple and noise. Others used pulse charging technology. This causes havoc with systems such as audio systems that would like a nice, clean voltage. These chargers are designed to charge a battery at high power, but very quietly.

Suggested Applications: Wherever a high power 12 volt battery charger is used, for example in in Audio Displays, Demo & Show Vehicles Marine & Recreational Vehicles; Battery maintenance & storage, Retail Store Displays, Industrial Applications, Communications (available in 12V , 36V . 42V . and 48V output).

These chargers are the famous APS power supply which will charge a battery using the taper charge method. Also available is a charge controller which allows the APS Power Supply to operate as an automatic 3-stage “smart charger.” This gives a sophisticated charger with Bulk, Absorption, and Float stage charging, increasing the charging capacity of the APS Power Supply to decrease charge times, insuring proper and safe battery charging and eliminating over-charge. This “intelligent” technology monitors the battery at all times.
These AC input switchmode chargers are ideally suited for the mobile environment. These power supplies feature regulated and filtered outputs which allow for clean audio demonstrations without the slightest hint of noise.
Their low profile design allows for convenient mounting under a display vehicle or behind a display board. When combined with a high quality battery, APS units can supply transient surges up to 1000 amps.
In maintenance mode the charger is left connected to the battery. If the voltage remains in the long term stage for more than seven days, the charge controller will automatically deliver a boost charge for a short time, then automatically return to the normal float stage to prevent sulfation.
Virtually Silent Operation. All PST-APS 12V chargers utilize an advanced switching design. There is no low frequency transformer hum. Every unit is equipped with a cooling fan that is virtually silent and does not usually come on.
The PST-APS 12VDC battery chargers all feature thermal control circuitry that engages the fan only when internal temperatures require it (typically 75% of full load). They have small compact sizes compared to the transformer based power chargers. The switch mode technology utilized in APS power chargers has 86% efficiency. This superior design results in cooler operating temperatures and compact size.
These 12 volt battery chargers were originally designed and are widely used to power automobile audio systems in retail demonstration rooms and trade shows. They have very low ripple and no audio noise. Other output voltages can be made upon request.

Summary Table: High power 12 Volt (13.6) volt lead acid battery chargers

Model number Continuous Amps Input Voltage Charging Watts Weight Charge algorithm UL listed? Dimensions Mounting Drawing AC Service Required Price
PST-APS-15 15A 108-132 VAC
47-63 Hz
7 Amps max
204W 5.5 lbs 3 Stage Yes 7x6.5x3.5 inches not including bracket click here for mounting drawing 440VA $166
PST-APS-30 30A 108-132 VAC
47-63 Hz
12 Amps max
408W 6.5 lbs 3 Stage Yes 7x6.5x3.5 inches not including bracket click here for mounting drawing 880VA $229
PST-APS-220-30 30A 220 VAC
408W 6.5 lbs 3 stage Yes 7x6.5x3.5 inches not including bracket click here for mounting drawing 880VA $416
PST-APS-45 45A 108-132 VAC 612W 6.9 lbs 3 Stage Yes 7x6.5x3.5 inches not including bracket click here for mounting drawing 1296VA $306
PST-APS-55 55A 108-132 VAC 748W 6.9 lbs 3 Stage Yes 7x6.5x3.5 inches not including bracket click here for mounting drawing 1520VA $375
PST-APS-220-55 55A 220 VAC
748W 6.9 lbs 3 Stage Yes 7x6.5x3.5 inches not including bracket click here for mounting drawing 1520VA $526
PST-APS-75 75A 108-132 VAC 1020W 7.8 lbs 3 Stage Yes 10x6.5x3.5 inches not including bracket click here for mounting drawing 1944VA $554
PST-APS-EC-8 8 foot polarized AC extension cord for PST-APS75         $33
PST-APS-90 90A 108-132 VAC 1224W 7.8 lbs 2 Stage No* 10x6.5x3.5 inches not including bracket click here for mounting drawing 2320VA $554
APS-IQ4 IQ4 controller, turns the APS series into multi-stage chargers by inserting its control cable into the control socket of the APS       $28.00
PST-APS-HK4 PST-APS-HK4 Hook-up kit for 4 gauge wire with quick-release connectors, 8 foot long cables         $75
* The PST-APS-90CH is designed to exceed UL requirements.

**The dual-voltage feature allows the voltage to change from 13.6 to 14.4 volts by inserting a jumper into the control socket.

Specifications including the APS-IQ4 multistage charge controller
Parameter Value Notes
Battery 12 Volt batteries: sealed lead acid, flooded lead acid, VRLA, gel, or AGM  
Output voltage 14.76V Bulk charge phase
14.16V Absorption charge
13.56V Float charge phase
This charger can be left on indefinitely without overcharging the battery. The float charge phase keeps the battery maintained to prevent sulfation.
Output voltage tolerance ±0.7% no load
Maximum ripple and noise 100 mV RMS  
Input voltage rage 96-140 VAC  
Input frequency 47-63Hz  
Typical efficiency >80%  
Short circuit protection Yes  
Overload protection Yes  
Line regulation <1%  
Load regulation <1% at output terminals
Recommended output wire gauge 4 AWG  
Output terminals 4 AWG screw terminals  
Fan control Proportional-- Fan only comes on when needed
Fan type Special ultra low audio noise fan   
Over temperature protection 80°C Turns off
Ambient temperature 0°C to 40°C  
Storage temperature -20°C to 80°C  
Warranty 2 Years  

Usage Note: Typical AC outlets are 1540VA, 14 amp service. To run the higher power units you will need higher power service than is typically available in a wall plug. Please consult competent technical authorities to determine the total load on the circuit you intend to supply the power with, including other things plugged into the same circuit.

Maintenance mode: After the 12V battery is full the charger goes into a maintenance mode. In maintenance mode the battery is safely floated at 13.56 volts to maintain the battery and replace charge lost due to leakage or self discharge. In addition, if the battery has not received a bulk charge during a seven-day period, the charge controller will switch the APS Power Supply into a pre-programmed equalization stage to top off the batteries, dissolving any sulfate layer on the battery’s plates and avoiding stratification of flooded batteries.

Audio Application Note: Operating high power audio systems from the battery while it is on charge can cause the charger to change charge stages at random, which you might be able to hear. If you are running equipment from the battery while the charger is attached you can remove the jumper plug from the charger, which will revert it to a 13.6 volt power supply to give you better sound. Just plug it back in to make it a multistage charger.

To perform this function remotely put a toggle switch in the jumper as follows
wiring the jumper for remote switching of the charger/power supply function

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High power 12 volt low noise battery chargers, 12V battery chargers, high power 12 Volt battery charger

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