If you fly planes with 2 or more Rx battery packs...
Now you can charge them quickly, safely, and reliably. Sirius Charge Quad Plus is a fast, fully automatic charger for larger NiCd & NiMH batteries. Our RPC™ charging technique cures NiCd "memory", rejuvenates old batteries, and greatly extends the life of all NiCd batteries. Because it is so effective, it totally eliminates the need to "cycle" your batteries. Sirius Charge Quad Plus is "GOOF PROOF". You cannot harm the charger OR your batteries by plugging anything in backwards! Sirius Charge Quad Plus can charge up to 4 batteries simultaneously
Channel 1 will charge 4 to 8 cells, 250 to 4000 mAh NiCd and 500 to 3000 NiMH. Channel 2 will charge 4 to 6 cells, 250 to 4000 mAh NiCd and 500 to 3000 NiMH. Channels 3 and 4 will charge 1 to 6 cell, 1000 to 7000 mAh NiCd and 1600 to 7000 mAh NiMH. Sirius Charge Quad Plus can often recondition older batteries to full power. Be persistent! You may need to discharge and recharge a battery several times to restore lost performance. Leave your batteries on charge as long as you like. When the green LED is flashing, Sirius Charge Quad is in Pulsed Maintenance Mode. This is NOT a trickle charge! The full current charge and discharge pulses are carefully timed to chemically condition the cells, keep them fully charged, and eliminate NiCd "memory" effect without overcharging.
You may use your Sirius Charge Quad Plus without worry on brand new (never charged) batteries. Just remember, brand new batteries may only develop about half power the very first time you charge them. We suggest "forming" new battery packs to bring them to full capacity. More information on "forming" can be found here: Sirius Charge Pro Former SIRIUS CHARGE QUAD PLUS OPERATION Sirius Charge Quad Plus is supplied with 5 Connectors (Power, 3xRX, 1xTX) 1. Connect Sirius Charge Quad Plus to a 12 volts DC source capable of at least 7 amps. 2. Plug Sirius Charge Quad Plus into your batteries. • The computer will automatically turn on and analyze your battery. After 4 seconds, the green LED(s) will light indicating the charger is charging your batteries. 3. Wait for the blinking green LED. • The green LED will start flashing when Sirius Charge Quad finishes fast charging and enters Topping Mode. It's ready to fly! 4. You may leave your battery connected until ready for use. • Sirius Charge Quad automatic Topping and Maintenance modes will maintain the charge level and condition the pack as long as you leave it on charge. IF NOTHING HAPPENS Sirius Charge Quad Plus requires BOTH DC power source and a battery to be properly connected before it will turn itself on. CHARGING TIME Sirius Charge Quad Plus is a split output charger. 1 Amp regulated output on channels 1 and 2 2 Amp regulated output on channels 3 and 4. To estimate full charge time for any particular empty battery on channels 1 and 2, divide the battery capacity (in mAh) by 1000. Some examples: 2000 mAh pack: 2000 ¸ 1000 = 2.0 hours 2800 mAh pack: 2800 ¸ 1000 = 2.8 hours To estimate full charge time for any particular empty battery on channels 3 and 4, divide the battery capacity (in mAh) by 2000. Some examples: 2000 mAh pack: 2000 ¸ 2000 = 1.0 hours 2800 mAh pack: 2800 ¸ 2000 = 1.4 hours Remember: these times are for fully discharged batteries. Partially charged packs take less time to charge. It is completely safe to charge between EVERY flight, because the digital computers will deliver only enough energy to charge your batteries exactly full; no more, no less. Then, every time you take off, you have freshly filled batteries. And, you just can't beat fresh batteries for top performance and best reliability.  Easy to use: just plug it in, and forget it
Goof proof! You cannot harm the charger or your batteries by plugging anything in backwards
Digital computers are immune to temperature changes
Peak Predictor tm prevents overcharge
RPCtm allows safe fast charging
Automatic Pulsed Maintenance Mode keeps batteries at peak performance, indefinitely
Ah yes, but is Sirius Charge really safe? Yes, it is. Using a conventional slow (overnight) charger will usually give you a battery lifespan of 300 to 500 charge cycles. Conventional "delta-V" fast chargers can shorten that to about half, because of overcharge, temperature rise, and pressure buildup. The advanced techniques used by Sirius Charge Quad will actually extend battery life. If you use only Sirius Charge, you can extend your battery life to over 2000 cycles! That's over 20 years of flying for the average flyer! | 
