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Home✈️Aircraft🚁Helicoptere-BladeOther › Battery for Blade CP and upgrade kit. opinions?
01-13-2006 06:41 PM  13 years ago
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Simmer

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Massachusetts

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Battery for Blade CP and upgrade kit. opinions?
I am looking for about 10 min of flight time (or more is good
Want something to go with the Upgrade kit.

900MaH?
100MaH?
1250?
1320?

I think I might want to skip the 1320 as its heavier and I dont need the looong flight times, prefer more agility.


not looking forward to making a connector for the heli, or charger but I prob will have to do at least one of these.
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01-13-2006 08:48 PM  13 years ago
futuramille

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SC USA

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Just make sure that your 'c' rating is up there.

the TP1320 has a 13c continuous discharge with 20c burst. That's allot of amp's and a big difference to some 900mah bat's with 10c like alot of the cheep lipo's out there for sale.

If they don't state the c rating....I would steer clear unless you can find someone on here to vouch for it.


------------------------------
.....I need more batteries!!!
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01-13-2006 11:22 PM  13 years ago
Simmer

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Massachusetts

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Hmm the thunderpower 900 I just got reads 10C I beleive
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01-14-2006 02:48 AM  13 years ago
futuramille

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SC USA

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Don't get me wrong, 10c will fly but the difference between that and 13c is quite noticable and more than makes up for the added weight IMO. I'm loving it now that I've got a BL motor in my BCP. I'm no 3D master but I do like the extra punch when there is trouble. I got the TP1320 right off, brushed motor w/9t...over 200 cycles through my BCP.

I wish my flying ability reflected it a bit more


------------------------------
.....I need more batteries!!!
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01-14-2006 04:49 AM  13 years ago
turboomni

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East of the Equator

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[quote]Don't get me wrong, 10c will fly but the difference between that and 13c is quite noticable and more than makes up for the added weight IMO. I'm loving it now that I've got a BL motor in my BCP

I could be wrong but I would think the fact that Simmer is using [didn't say otherwise] the stock motors that going from a 10C to a 13C won't make any difference with the brushed motors and stock 4 in 1 esc's. Guys please correct me if I am wrong. ! A brushless motor could take advantage of the better Lipo rating with a BL motor ESC etc.
From my experience the TP 1320 with the stock type motors/and 4 in 1 will do basic moves for a very long time[10C],,but the TP900 will fly it a good bit better because of less weight. Time difference between the two packs is about 20 for the 1320 and 12 for the 900 during easy flight. This is with the AEK upgrade. In windy conditions I use the 1320 for the weight and throwing it around the 900. For shorter duration full out acrobatics guys I think use the a 700 Mah,,i think.
Comparing a brushless setup's power requirements compared to the stock requirements are like comparing apples and oranges.
A Brushless setup can consume much more current than the stock motors,,,Am I correct in this??
Setup is everything, All my heli's can fly far better than I can pilot them
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01-14-2006 01:50 PM  13 years ago
avator

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New Jersey

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I think you're right Turbo,

In fact, the battery capacity has nothing to do with current draw, the requirements of the motor and electronics of the heli determine that. At full throttle, if your heli draws 6 amps, it doesn't matter how big your battery pack is as long as it is capable of delivering 6 amps continuosly. With that said, A 900mah 10c lipo should be good for 9amps, plenty for a 6 amp draw heli. On the other hand, if you have a BL set up and your heli draws 10amps, well now there is a problem, especially using Lipo's. Drawing excessive current from a Lipo is dangerous. Not only will you ruin your battery, you can ruin your heli as well when it catches on fire.
Think of it this way, the battery doesn't push out current, the helicopter sucks out current. It's when the heli sucks more than the battery can provide is where the trouble starts. If the battery is huge and capable of delivering 30amps and the heli only requires 6 amps, it's still only going to draw 6 amps from that high capacity battery.
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01-14-2006 02:15 PM  13 years ago
astroflyer

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Milford, Nova Scotia, Canada

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Catch on fire? come on....

Drawing excessive current from a lipo will make some heat, (as it will with any battery) but the high current will retard the voltage and the battery will die and the heli will be back on the ground long before it gets hot enough to catch on fire....

If you short a lipo, in fact any battery, you could get a fire, but in the blade there'd be no way you'd ever get enough current to cause a fire...

Lipos definitely need care in their use, but they're far from time bombs waiting to blow everything to smithereens...

you're quite right about the heli determing the current draw. If someone is seeing better performance between a 10C and 13C battery under a 6 amp load, it is because the 10C battery is either old and done in, or is NOT really a 10C and has been overrated by the manufacturer.

cheers
Papa Sharptooth

Bouncing about the living room, my then three year old grandson declared himself "a kangaroo".
"If you're a Kangaroo, what is Grampie", I ask.
His reply:  "you a dinosaur"
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01-14-2006 05:49 PM  13 years ago
Simmer

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Massachusetts

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Lipos definitely need care in their use, but they're far from time bombs waiting to blow everything to smithereens...
heh I like this. Telling statement. So much emphisis on lipos that can explode, (and I suppose do sometimes) but with care and knowledge in what you should/should not do, I think they are only slightly more hazzardous than NMH or Nicads. Perhaps the danger comes about because most of us are way familiar with Nicads and may tend to overlook the differences?

oh and as to what and where to buy, IMPO I will always stick to a more reputable manufacturer if I can, for any battery.
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01-14-2006 07:35 PM  13 years ago
HeliKim

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Louisiana

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Lipos definitely need care in their use, but they're far from time bombs waiting to blow everything to smithereens...
Unless they get a little wet while charging them....then they really do explode.
**insert clever phrase here**
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01-14-2006 08:11 PM  13 years ago
avator

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New Jersey

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I'm not a Lipo expert, but, I have noticed, as everyone else probably, that there has been an extreme safety campaign concerning Lipo's and Li-ion, not only by the manufacturers and retailers, but, by the AMA as well. There has to be a reason for the cautious approach to these batteries. There was a picture in, I believe it was Model Aviation last month, where a guy was charging his electric heli (I don't remember which one it was) and it caught fire and was completely distroyed. It had Lipo's for power. Now, maybe he was pumping 20 amps through an 800mah pack to charge it or maybe these batteries require a little more care than we are use to. At any rate, I'll err on the side of caution. Bottom line here is, if you abuse them there is a possibility of fire or explosion, at the very least, you'll ruin your expensive pack.
Did you know that it is illegal to transport Lithium batteries by airmail because of the danger of fire and explosion. There must be a reason for it.
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01-14-2006 08:34 PM  13 years ago
T. Defense

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WV

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I have a bone stock Blade CP with 2 stock batteries and the 2.5 hours charge time for the 10 minutes of flight is killing me!!! What battery or charger do I need to get. I really don't want to spend a $100 on a charger, is there a more economical choice? I already have two stock batteries. Please advice. Thanks in advance!
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01-14-2006 08:49 PM  13 years ago
c mark smith

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Mt Vernon, Indiana

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I bought a Hobico MK II charger. It charges all three types of batteries, Nicad, NiMH and Lipos.

It has ports for both the charging and monitoring wilst charging, it is 55 retail.

I also bought the large Deans connectors, both for the speed control, batteries, and the charger/battery leads for charging.

I like the Thunder Power 1320 and have symetric CF blades, and the aero motor/geat.

It flies great, i'm learning nose in and 180/360 in place turns.

The batts charge in about 45 minutes, and flight time sare near 20 with the geared tail.

Price of three batts and the charger exceeds that of the original Blade,But they do well in my second heli, a Shogun. About the same run times with the brushless motor.

Actually in the Blade, I'm ready to quit flying long before they are out of power !
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01-14-2006 09:31 PM  13 years ago
astroflyer

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Milford, Nova Scotia, Canada

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There was a picture in, I believe it was Model Aviation last month, where a guy was charging his electric heli (I don't remember which one it was) and it caught fire and was completely distroyed. It had Lipo's for power.
20 or 25 years ago when fast charging nicads first appeared, one of our local guys had a similar incident with his pattern plane. It put people here off fast charging nicads for years.
Did you know that it is illegal to transport Lithium batteries by airmail because of the danger of fire and explosion. There must be a reason for it.
well, unless the regulations have changed recently, that's not quite true. they can still be shipped by cargo airplanes, and as far as I can find out it only applies to "primary lithium" or non-rechargable lithium batteries. And of course, lithiums in laptops and cell phones etc are flown in both cargo and regular airliners every day.

the incident which triggered the regulations happened during unloading when handlers damaged a shipment of non-rechargable lithiums causing a fire.

cheers
Papa Sharptooth

Bouncing about the living room, my then three year old grandson declared himself "a kangaroo".
"If you're a Kangaroo, what is Grampie", I ask.
His reply:  "you a dinosaur"
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01-14-2006 10:08 PM  13 years ago
T. Defense

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WV

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Forgot to mention I need it for AC charging not strictly DC. Wide open for suggestions.
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01-14-2006 11:06 PM  13 years ago
TG540EDGE

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Texas

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amps
does anyone know how many amps the blade cp with aek pulls?
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01-15-2006 05:18 AM  13 years ago
turboomni

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East of the Equator

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I seem to recall 8 to 9 amps maxSetup is everything, All my heli's can fly far better than I can pilot them
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01-15-2006 09:22 PM  13 years ago
Simmer

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Massachusetts

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I have completed the motor and heatsink change, created and connected the 900MAH baatery for charging.

My thunderpower charger has settings for .5 .8 and 1.3
I set it for .8 closest to .9 without going over. would I see any advantage to setting it to 1.3 (faster charge, beats on battery dangerous dont do it, or .5 (slower to charge packs in a little more time or life out of battery?)

Guesses here... I guess .8 is where I should be.

also I used some insulated quick disconnects, so I can convert to the Trex and back to blade. is there a downsinde or any reason to not use something like this? (estra resistance, higher impedance?

thanks
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01-16-2006 03:38 PM  13 years ago
avator

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New Jersey

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Astroflyer,

There is probably some hype to the dangers of Lipo's and Li-ion's, however, I don't really think you can compare them to Nicad's. RCer's have been abusing Nicd's for many years with little more than some hot batteries that won't hold a charge anymore. I don't think Lithium batteries would afford the same benige results.
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01-16-2006 04:09 PM  13 years ago
akerkhof

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Indianapolis, IN

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I have gotten a Nicad to explode by charging it with a nimh charger. I wasn't there to witness it personally, but it flung battery acid everywhere and melted the charger a bit. Not as impressive as a really bad lipo mishap, but you really have to abuse the battery for them to go ball of flame on you.
-- Aron in Indiana -- http://www.neolith.org/cp2 -- Honeybee CP2 Resources
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01-16-2006 10:07 PM  13 years ago
akshaw

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Plymouth Meeting, PA

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Hi T. Defense,

If you want a cheap charger, check out
http://www.balsapr.com/catalog/batt...oductId=V723156

Which only works with 3 cell lipos. This is what I use. But when I can afford it I would like to get a better charger. One thing to consider is once you know what brand of battery you are going to buy, it would make life easier to get the same brand of balancer since the pigtail connector on the batteries that connect to the balancers are different from brand to brand. But you can adapt any balancer to any battery provided you can make an adapter. (See discussions by EVERYDAYFLYER in rcgroups.) Balancers typically work with any charger. Also, it is almost always recommended to charge lipos in a fireproof container of some sort. (I charge mine in a crock-pot.)

Since I like Thunderpower batteries (the 1320mah is lighter than any other ~1300mah batteries I've tried), I would probably invest in a TP charger and balancer.

Hope this helps.

--Anthony
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Home✈️Aircraft🚁Helicoptere-BladeOther › Battery for Blade CP and upgrade kit. opinions?
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