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Giant Scale
Chargers and Cyclers...

You have a lot of choices when it comes to chargers for your receiver and transmitter packs. Although there are many of them out there, we don't recommend "peak detection" type chargers for everyday use in receiver and transmitter pack applications. Instead, we feel the use of peak detection chargers should be limited to electric flight motor packs and the Fast Field Charging of receiver and transmitter packs. For Fast Field Charging, there is only one specific Fast Field Charger that we will recommend and sell, the Sirius Pro Series Charger. You'll find the details below.

There are basically two kinds of chargers available, fixed rate and adjustable or multi rate. Although they are more expensive, we think the adjustable rate chargers are your best choice because you buy them once and that's it. With fixed rate chargers, you have to buy a new charger every time you buy a different capacity pack or one with a different number of cells.

For cycling a pack, the only cycler we recommend is the Sirius SuperTest. Again, you'll find all of the details below.

 

Fixed Rate Chargers...

 

High Output
3x3.gif (810 bytes) 4 and 5 cell System Charger, $21.95 3x3.gif (810 bytes)

This charger is similar to the one above, but with higher output currents. The transmitter side charges 8 cells at 120ma and the receiver side charges 4 cells at 180ma and 5 cells at 150ma.

The 120ma Tx output would charge an 1100mah pack in 14 hours.

The 180ma Rx output would charge a 4 cell 1500mah pack in 10 hours, a 4 cell 2200mah pack in 18 hours, and a 4 cell 3000mah pack in 24 hours.

For 5 cell receiver packs, The 150ma Rx output would charge a 5 cell 1500mah pack in 14 to 16 hours, a 5 cell 2200mah pack in 20 hours.

The System Charger comes with universal connectors for all radio brands and models.

   

Fast Field Chargers...

 

Sirius PRO Series Charger, $129.95
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The Sirius PRO Series Fast Field Charger is the only Fast Field Charger that we recommend. In general, it's very easy to damage a battery pack with a "peak detection" Fast Field Charger. After extensive testing, we feel that the Sirius PRO Series Charger is the gentlest on your battery packs that we have found and we're comfortable with its use in the field. However, we don't recommend its use as your only charger. In other words, you shouldn't only charge your receiver and transmitter battery packs during the drive to the flying field with any Fast Field Charger. Instead, you should primarily slow charge at home and if you do find that your packs need topping up at the field, so that you can fly longer that day, the Sirius PRO Series Charger is the perfect solution.

Now for the details...
The PRO Series charger is powered by a 12V source. This can be the battery in your car, your field box, or a 12V DC power supply at home. You have three choices of charge rates, 250ma, 500ma, and 1000ma. To start the charge, just plug your pack into the PRO Series Charger. The charge will automatically stop when your pack is at 95% to 98% of its capacity. You can charge both a transmitter and receiver pack at the same time.

Please Note...
Regardless of the brand or model of your transmitter, if the manufacturer has installed a blocking diode in the transmitter's charging circuit, you will not be able to charge the transmitter's battery pack with the PRO Series Charger until the diode is bypassed. Contact the maker of your transmitter for details. There's no problem charging your receiver pack.

The Sirius PRO Series Charger comes with universal connectors for most radio brands and models. 
 


JR Transmitter Adapter, $9.953x3.gif (810 bytes)

For those of you with JR transmitters, you're going to need the JR Transmitter Adapter for the PRO Series Charger. This same adapter is needed for the Sirius SuperTest Cycler. The polarity of the transmitter charge plug used in JR transmitters is the opposite of all other transmitters (Futaba, Hitec, Airtronics, etc.). This adapter will make your JR transmitter compatible with the PRO Series Charger and the SuperTest Cycler.

 

Cigarette Lighter Adapter, $9.953x3.gif (810 bytes)

The easiest way to use the 12V battery in your car to power the PRO Series Charger is with this adapter. You could buy the necessary female banana plug adapters and cigarette lighter adapter at Radio Shack, but it's so much easier to just buy it already done for you.

   

Cyclers...

 

The Sirius SuperTest Cycler, $69.95

Many of you know that we haven't sold a cycler for some time now because we weren't comfortable recommending any of the cyclers currently on the market. Well, that's finally changed. For over a year now we've been testing the Sirius SuperTest Cycler in our lab. We've thoroughly compared it to much more expensive precision test equipment and the SuperTest has passed with flying colors.

The SuperTest Cycler is not a charger. To use it, you would first charge your 4 or 5 cell receiver pack, or your 8 cell transmitter pack, with the charger you already have. Once the pack is fully charged, you would unplug it from your charger and plug the pack into the SuperTest Cycler. 

The SuperTest Cycler  cycles one pack at a time. There are switches to select 4, 5, or 8 cell packs and a test load of 100ma, 250ma, or 500ma. If you'd like to match the tests we run here at SR, use the 250ma position. The 500ma position will generally give you lower test results and the 125ma position will give you higher test results.

Once you plug your pack into the SuperTest, it will automatically start to cycle your pack. You don't have to plug the SuperTest into the wall, it's powered by the energy in your battery pack! When your pack reaches a precise cutoff point, which isn't low enough to damage your pack, the SuperTest will automatically stop the cycle and your pack's capacity will be displayed on the SuperTest's large, LED display. It couldn't be easier to use.

 

JR Transmitter Adapter, $9.953x3.gif (810 bytes)

For those of you with JR transmitters, you're going to need the JR Transmitter Adapter for the SuperTest. This same adapter is needed for the Sirius Pro Series Fast Field Charger. The polarity of the transmitter charge plug used in JR transmitters is the opposite of all other tranmitters (Futaba, Hitec, Airtronics, etc.). This adapter will make your JR transmitter compatible with the SuperTest Cycler and the Pro Series Fast Field Charger.

Please Note...
Regardless of the brand or model of your transmitter, if the manufacturer has installed a blocking diode in the transmitter's charging circuit, you will not be able to cycle the transmitter's battery pack until the diode is bypassed. Contact the maker of your transmitter for details.

There's no problem cycling your receiver pack. For the most accurate results we recommend connecting directly to your battery pack without going through your switch harness.

 


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