Our Products #4785296

This is a lightweight portable battery pack stripped to its bare essentials. It is useful to make some CPAP machines portable, as well as supply a portable source of unregulated 12V for photographic lights or cameras. It weighs 650 grams, or 1.3 pounds and supplies 115 watt-hours, or 8.8 amp hours. It is equivalent to a 6 pound sealed lead acid battery.For those who need an off-the-shelf lithium ion battery pack for portability. It can charge a cell phone 15-30 times before recharging, which makes it perfect for camping trips. It can run a CPAP machine for 10-20 hours (without humidity control).

As you can see, this is a battery consisting of 12 cells, shrink wrapped together with a battery management board. It does not have a plastic case to add weight. The output port is a cigarette lighter socket, and the charger plugs into the same port

Unique 24 volt AC inverter rated at 100 watts for use with CCTV and Solar installations. Suitable for 24VAC irrigation systems, and even 24VAC doorbells. Converts 12 volt dc to 24 volts ac.

This is a solid state relay. It uses state-of-the art microprocessor solid state control of the charging and isolation functions, but uses a solid state relay to control the big currents.

There are no moving parts in this unit, so it can withstand harsh operating conditions from -40C to +50C. The microprocessor unit constantly scans the voltage level of each of the two terminals for appropriate and timely On or Off connections. It can be used either as a battery low voltage protector or a battery isolator with manual over-ride.

This solid state battery isolator uses the latest MOSFET which have the minimal internal resistance of 2mOhm which translates to a total voltage drop of 0.2V even at full load of 80A. It has an idle current consumption of 0.015A. There is no moving parts and the electronic components are conformal coated to give a safe, spark free and long lasting operation in the battery and engine electric environment.

This battery-isolator is used to control battery systems that charge off the vehicle's alternator. They won't let the vehicle battery be used to power the load unless the engine is on. It will allow the extra battery to be charged at whatever rate the alternator can put out, so it needs big enough cables to do that. Big lead acid batteries when they are empty can accept 150+ amps, so rate the wires at the maximum current of the alternator (see the QA section below).

The features are as follows:
First it allows you to safely charge an external lead acid battery from the car electrical bus. It relies on the alternator's smarts to give it a good charge. In this mode it is called a split charge relay, or dual battery relay.

Second it allows you to run equipment in a trailer or RV without disconnecting the vehicle power bus. While the vehicle's engine is running all equipment is running from the car's power. When the engine is turned off the trailer equipment is run from the auxiliary battery only.


Third, the auxiliary battery can be a deep cycle type designed for running lights, TV, refrigerator, etc.

Fourth, it can be used as a low-voltage cutout to keep the car's battery from being drawn below 12.6 volts.

Fifth, no external diodes or current sense resistors are needed, the unit is a self-contained solid-state dual battery isolation relay.

Automotive battery backup system. 12 volt DC UPS module keeps 12 volt equipment alive in cars and taxis using an external sealed lead acid battery and acts as a battery back-up (BBU).


Click here for 5 amp version with status output

Click here for the 12 amp version.

Click here for the 24V 12A car UPS controller

Complete vehicle UPS with control module and 1.2AH lead acid battery

AC input 6V, 12V, 24V, 48V battery backup power supplies

This little gadget solves several problems for electronics in cars.

First it allows you to charge an external lead acid battery from the car's electrical bus.

Second it isolates the extra battery from the car so it won't be discharged by the car electronics, and it won't try to participate in starting the car.

Third it powers your equipment in the car using the car electrical system, but switches to external battery power when the car's battery is stolen, or drops below a predetermined voltage.

Fourth, it prevents the external battery from being over-discharged, keeping it from being damaged.

Fifth, it prevents your equipment from running the car's battery down so the car can't be started. In one configuration it cuts off the car's battery when the voltage gets below 13.1 volts, then switches over to the external battery, in other words it switches over to the auxiliary battery when the engine is shut off and the alternator stops.

In another configuration the crossover voltage is lower, say 12.0 volts. This allows your equipment to run off the car's battery but cut off while the car's main battery still has enough power to safely start the engine.

Handy adapter lets you use a portable battery with the Smith-Victor SV840K, SV950, Model280 video light, Cool-Lux CC-8010, CL1000DFV, CL500DSG, CL500BFG, Anton Bauer, Frezzi, and other compatible video lights

The innovative PST-BP200 uses a leakproof sealed lead acid battery to create a 15 pound portable power source. Includes both AC and car chargers. Battery pack with cigarette lighter output.

Often we get calls from photographers, astronomers, field researchers, CPAP patients , campers, fishermen and plain ordinary people like us who need a convenient source of portable power to power DC equipment in the field.
The BP23 2.3 AH 12V accupack was developed for this purpose, and now the BP-200 extends this to almost 10 times the stored energy, weighing less than 15 pounds (with other configurations that store and weigh less). The charging can be done from an AC outlet or a car, and the output is a female cigarette lighter socket output for easy use. This is a package consisting of a 7.5AH to 22 amp-hour, 12 volt sealed lead acid rechargeable battery, a 12V cigarette lighter socket output and both an AC charger and a DC car charger.

It consists of a tough padded nylon-canvas fabric bag that contains the battery and wiring for charging and discharging. The sealed lead acid battery can be charged or discharged in any position and is completely non-spillable. The charger is in a pouch and can be left home if you don't want to carry it with you.

For example, when the portable battery is used with your cell-phone car charger attached the BP-200 can run a typical cell phone for 150 times longer than the battery in the phone, or charge the phone 100-150 times.

The PST-SP12-150 series of battery back up power supplies consist of a universal input (90 to 265 volts AC, 47 to 63 Hz, or 130 to 375VDC) 12 volt power supply with a DC Battery Backup feature and switch. It can charge any 12 volt SLA, gel cell, VRLA, or AGM lead acid battery and instantly switch over to battery power upon power failure with zero crossover time. These power supplies can be used with or without the battery as convenient DIN rail mount power supplies. The charge rate depends on the exact voltage that the power supply is set for, but can be up to 12A minus the load current. The battery voltage is not regulated, and the output during AC operation is the same as the battery charge voltage so the 12 volt system will vary from about 14 to 10 volts during battery operation. If battery back-up is not required there is pot for adjusting the power which is accessible from the front panel.

Unique 24 volt AC inverter rated at 40 watts for use with CCTV and Solar installations. Also suitable for 24VAC irrigation systems, and even 24VAC doorbells. Converts 12 volt dc to 24 volts AC.

Handy adapters let you easily adapt, test and use laptop power supplies, AC adapters and battery chargers that have barrel connectors. Can be used to repair old laptops with broken sockets.

The PST-SP series of battery back up power supplies consist of a universal input (85 to 260 volts AC, 47 to 63 Hz, or 120 to 340VDC) 12 volt (or 24 volt) power supply with a built-in DC Battery Backup charger and switch. They can charge any 12 volt (or 24 volt) SLA, gel cell, VRLA, or AGM lead acid battery and instantly switch over to battery power upon power failure with zero crossover time.

These power supplies can be used with or without the battery as convenient DIN rail mount power supplies. They are designed for infrequent battery use. The charger current is small, so it charges the battery slowly and may not be applicable to systems having frequent, regular power outages 6 Volt Battery Backup Power Supply and DC UPS

150 Watt 12V version
150 Watt 24V version
150 Watt 48V version

The battery voltage is not regulated, and the output during AC operation is the same as the battery charge voltage so the 12 volt system will vary from about 13.6 to 10 volts during operation. The 24 volt system will vary between 27.2 to 20 volts during battery operation. If battery back-up is not required there is pot for adjusting the power which is accessible from the outside. There is also a remote turn-on option to allow low voltage switching of the AC power, but not the battery power.