Duel battery hook up
08-12-2011, 10:46 AM
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Duel battery hook up
Right now I am running a single 4.8v, 600mAh battery. I am wondering if I can hook up another battery with a Y cable with the same mAh rating and not create any problems with the receiver and servos. Please give me your ideas and tips, thanks
08-12-2011, 11:28 AM
#2
RE: Duel battery hook up
The best way is to add a second switch for the second battery. The second lead can be plugged into any empty channel on your RX. If you don't have an empty channel, then use a Y with one end of the Y going to the servo and the other end going to the switch lead. The male end of the Y then goes into the RX.
David
David
08-12-2011, 11:37 AM
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RE: Duel battery hook up
I'm going to try this switch in my GP Cherokee.
http://www.hobbyking.com/hobbyking/s...dProduct=16811
08-12-2011, 11:43 AM
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RE: Duel battery hook up
The Cherokee is electric. I have a ESC with built in 5v BEC. http://www.hobbyking.com/hobbyking/s...idProduct=3727
As you know if the ESC fries you lose the motor and your receiver power.
I also got a second 5v UBEC to run strait from the main battery. http://www.hobbyking.com/hobbyking/s...dProduct=10312
I'm going to wire them to this switch. If the I lose one of the BECs hopefully I'll still have control of the plane. http://www.hobbyking.com/hobbyking/s...dProduct=16811
08-12-2011, 11:45 AM
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RE: Duel battery hook up
They also have this sytem for larger planes. http://www.hobbyking.com/hobbyking/s...dProduct=14464
08-12-2011, 06:02 PM
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RE: Duel battery hook up
Amish,
I hope you read the reviews on this switch before you order it.
Larry
I hope you read the reviews on this switch before you order it.
Larry
ORIGINAL: AmishWarlord
I'm going to try this switch in my GP Cherokee.
http://www.hobbyking.com/hobbyking/s...dProduct=16811
I'm going to try this switch in my GP Cherokee.
http://www.hobbyking.com/hobbyking/s...dProduct=16811
08-12-2011, 11:02 PM
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RE: Duel battery hook up
The battery is in my Decathalon (http://www3.towerhobbies.com/cgi-bin...?&I=LXBGZS&P=7). I charge the battery before I fly and after 3 or 4 flights I check the battery and it is down to 50-60% The battery is only 2 years old. I dont know if the battery has gone bad already or if I just wear it down from flying so much.
08-12-2011, 11:45 PM
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RE: Duel battery hook up
Replacing the pack would be the simple $20 solution
2000mah Hydrimax RX pack
http://www3.towerhobbies.com/cgi-bin...&I=LXNRH6&P=ML
2000mah Hydrimax RX pack
http://www3.towerhobbies.com/cgi-bin...&I=LXNRH6&P=ML
08-13-2011, 12:17 AM
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RE: Duel battery hook up
ORIGINAL: devil505
The battery is in my Decathalon (http://www3.towerhobbies.com/cgi-bin...?&I=LXBGZS&P=7). I charge the battery before I fly and after 3 or 4 flights I check the battery and it is down to 50-60% The battery is only 2 years old. I dont know if the battery has gone bad already or if I just wear it down from flying so much.
The battery is in my Decathalon (http://www3.towerhobbies.com/cgi-bin...?&I=LXBGZS&P=7). I charge the battery before I fly and after 3 or 4 flights I check the battery and it is down to 50-60% The battery is only 2 years old. I dont know if the battery has gone bad already or if I just wear it down from flying so much.
2. 3 or 4 flights on a 600 mah battery and have 50% left is actually very good. It appears the battery is OK.
3. You don't really need redundant batteries for more flying time, just buy a larger capacity battery, like post 9 says. Hydrimax are excellent batteries.
4. If you do decide on 2 batteries, keep it simple. another battery and switch harness is all you need. Just plug it into any unused servo port. Don't complicate things with more electronic devices that can fail/or cause problems.
5. To check your existing battery. Charge it and cycle it. This will tell you capacity at full charge. Fly your 3-4 flights, then discharge the battery without recharging. This will tell you how much capacity is remaining. The difference in the 2 numbers is what you used in the 3-4 flights. Divide by the number of flights and you have the battery capacity you use in each flight. Check it once every month or 2 and you can tarck the health of your battery.
6. You don't need electronic switches/regulators etc.
08-13-2011, 12:21 AM
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RE: Duel battery hook up
ORIGINAL: Wild Wings
Amish,
I hope you read the reviews on this switch before you order it.
Larry
Amish,
I hope you read the reviews on this switch before you order it.
Larry
ORIGINAL: AmishWarlord
I'm going to try this switch in my GP Cherokee.
http://www.hobbyking.com/hobbyking/s...dProduct=16811
I'm going to try this switch in my GP Cherokee.
http://www.hobbyking.com/hobbyking/s...dProduct=16811
LOL yeah looks the same as most of there other reviews. Crapshoot. Anyway It's on order and I'll post a review of the one I get here.
08-13-2011, 04:51 AM
#12
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RE: Duel battery hook up
I needed added weight for my LT40. Had 2 1500 mAh NiMH packs and a Y harness. You have a 3000 mAh "pack". Charging is different issue. I use a combo MPI 3-wire switch/charge port. Can't charge the extended pack with this config. I Have to disconnect one pack from the Y and then charge both independently. Alt config would include a 2nd charge port / switch and connect each battery to its own charge port with the Y connecting the output side of each charge port. To charge both switches off. To operate both switches on.
08-13-2011, 05:38 AM
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RE: Duel battery hook up
I can make you a "D" cell Nicd, 5,000Mah pack. They weigh 1 1/2 lbs. eac. i put two of them in the nose of my Corsair, 3 lbs. and still needed to add one more lb. They ard 30.00 each plus about 5.00 shipping. I make and sell alot of the sub C, 2200 Mah. I am not sure what they weigh. 6 volt is 22.00 and 4.8 volt are 20.00. Let me know if I can help. Thanks, Nick [email protected]
08-13-2011, 07:23 AM
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RE: Duel battery hook up
We CAN NOT hook up two identical battery packs parallel since their voltage is NOT identical, therefore they oppose each other constantly.
This called BUCKING VOLTAGE.
This called BUCKING VOLTAGE.
08-13-2011, 10:00 AM
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RE: Duel battery hook up
Yeah I'd like to hear this too.
It would sure mess up my diabolical plot to use two 5S packs to get 10S for my SweetN' Low Stick.
What's worse is I'm planning on two 5000mah 5S packs in series to get 10S and then two of these two 5S packs in parallel to get 10,000mah.
Man I'll have voltage bulking all over the place with these 20 lipo cells.
It would sure mess up my diabolical plot to use two 5S packs to get 10S for my SweetN' Low Stick.
What's worse is I'm planning on two 5000mah 5S packs in series to get 10S and then two of these two 5S packs in parallel to get 10,000mah.
Man I'll have voltage bulking all over the place with these 20 lipo cells.
08-13-2011, 10:03 AM
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RE: Duel battery hook up
ORIGINAL: AmishWarlord
Man I'll have voltage bulking all over the place with these 20 lipo cells.
Man I'll have voltage bulking all over the place with these 20 lipo cells.
[>:][X(]
08-13-2011, 12:33 PM
#18
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RE: Duel battery hook up
As long as the chemistry is the same, i.e. Nicad to Nicad, NiMh to NiMh, etc. and the cell count is the same, no problem in connecting them in parallel. Even if they both have slightly different voltages (one more charged than the other) you can still do it as they will quickly equalize. They can even be of different capacity, i.e. a 600mah and a 1200mah. Just do not try to charge them in parallel if they are Nixx, okay to charge Pb or Li in parallel, even if different capacities as long as the cell count is the same.
08-13-2011, 04:34 PM
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RE: Duel battery hook up
You guy's are bucking way over my capacity nimh or nicad.I have 2 1000 mah nicads for four years now in a scratch built 112 inch WS ugly
stick.I cycle and charge a lot.I fly until they are near dead .I have never had a problem .Im starting to show some changes.Probably
time to replace....
stick.I cycle and charge a lot.I fly until they are near dead .I have never had a problem .Im starting to show some changes.Probably
time to replace....
08-13-2011, 11:13 PM
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RE: Duel battery hook up
ORIGINAL: spitncobra
I fly until they are near dead .I have never had a problem .Im starting to show some changes.Probably
time to replace....
I fly until they are near dead .I have never had a problem .Im starting to show some changes.Probably
time to replace....
08-14-2011, 02:37 AM
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RE: Duel battery hook up
I would not use a Y and 2 batteries unless I just didn't have a choice....no open ports on my receiver......I would disconnect the batteries from the Y and charge each seperatly.
Instead I would use a second switch and plug into any open port on your receiver.....this is still parallel.
Or just get a bigger capacity battery, but you need a bigger capacity charger.
3 or 4 flights on a 600mAh battery isn't too bad......a second battery adds weight.
Let us know what you decide to do and how it works for you.
Instead I would use a second switch and plug into any open port on your receiver.....this is still parallel.
Or just get a bigger capacity battery, but you need a bigger capacity charger.
3 or 4 flights on a 600mAh battery isn't too bad......a second battery adds weight.
Let us know what you decide to do and how it works for you.
08-14-2011, 01:58 PM
#25
RE: Duel battery hook up
Why not just replace the battery with another one that is charged ??? Cheaper , easy and no big deal, you probably needed a break anyway . ENJOY !!! RED
