Doug Cronkhite

My Feedback: (34)

Can someone point me to a charger that can measure IR that won't break my checking account?

VerneK

Hi Doug,
The CellPro 10S is hard to beat. You can get them very reasonably priced at F3A-Unlimited. I have two of them going on their third season and I still haven't seen anything I'd rather have. The only thing it doesn't do is discharge but most of the chargers that will discharge at such low amperage that it makes it pretty much useless for that purpose anyway. For discharging, I use a CBA II from West Mountain Products. Hope this helps.

Verne Koester

Doug Cronkhite

My Feedback: (34)

Thanks Verne. The only discharging I ever do is down to storage voltage, so that's not really a worry.

woodie

I received my order from HobbyPartz today, immediately checked the batteries for cell voltages. One pack is fine, all cells at 3.81V, the second pack has a dead cell #3. All other cells were at 3.81V. Just sent and email to Hobbypartz with the info and pictures. Will see how they respond.

Woodie
Team Acme LG
Team Blenderm

nonstoprc

My Feedback: (90)

Can somebody post the IR numbers for Sky-lipo as well as for Turnigy Nano?

wattsup

My Feedback: (1)

QC, I, like Verne have charged my batteries with the Cellpro 10s charger for the last 3 years. Currently my IR readings for the Sky lipo 4400mah 20c 5s packs are between 1.7-2.6 after 24 flights. After 49 flights on the Nano 4000mah 25-50c 5s batteries the IR readings are between 2.8-3.7. BTW, the Sky lipo's and the Nano packs are still strong after 6 1/2 to 7 minutes and their performance is very similiar including the amps Hope this helps, Everette

desertrider49

My Feedback: (5)

I would like to ask a question:

I bought two brand x 5000 6cell batteries and have charged them approximatly 50 times and now they lose their punch just a couple minutes into the flight. Can I still use them or should I recycle them? (meaning throw them away in a responsible way) I don't use a seperate receiver battery so I'm also concerned about that. Also, can a person buy a single cell and replace the bad one?, if that is the problem.

Thanks

wattsup

My Feedback: (1)

desertrider49, based on my limited understanding and 6 years of experience using lipos is that once a battery can no longer hold it's voltage and amps after 2-3 minutes, the battery has probably reached the end of it's useful life. I would be very careful using them as the power source for both the motor and servos, etc. I'm not a fan of using a Esc with a Bec. They are probably reliable but, I just don't want to take the chance. It may not be as easy as replacing a single cell. You need to determne first if there is a dead cell or if the all the cells are weak and have reached the end of there useful life based on how we use them. Hope my response has made sense. Perhaps some others can add their knowledge, thoughts and experience.....Everette

shannah

My Feedback: (5)

It's pretty tough to replace a single cell. You would need to be able to properly solder the tabs, and think that isn't a simple thing to do. Also, it wouldn't do you much good to replace a single cell because that one would have a much lower IR than the other cells in the pack. It would end up dying quickly.

desertrider49

My Feedback: (5)

Thanks Steve, that's what I thought. I won't be buying any more of that brand.

wattsup

My Feedback: (1)

Steve, two years ago I replaced a single cell that had died in one of my 5s packs and no it was not easy to do. I was aware that this could be a problem as it relates to the IR's. I was then and now using the Cellpro 10S charger and noticed the charger was having some difficulty as it "charged balanced" this particular pack. You are right, it wasn't very long after that this pack began to fail as it relates to our use. Just thought you might want to know___Everette

wattsup

My Feedback: (1)

BTW, Congratulations to U.S. Navy Seal Team #6_Job Well Done!

Mastertech

My Feedback: (31)

+1

wattsup

My Feedback: (1)

Well, it was bound to happen. Someone at Hobby King took my suggestion and ran with it! They have just introduced 2 new Nano 4500mah 5s versions. The first one rated at 35-70c and selling for $57.29 and the 2nd one rated at 45-90c and selling for $66.78. I can see the lipo battery fight starting to heat up! Thought some of you out there might want to know. Regards, Everette

Mastertech

My Feedback: (31)

Looks like the weight will make them a non-player @ 750-800 grams.

Maybe they're actually less than that.

Tim

Velco

Tim, what you mentioned is their shipping weigth, they are actually 570g and 630g which absolutely OK.

Velco

Mastertech

My Feedback: (31)

Thanks!

That really makes them a player.

Tim

wattsup

My Feedback: (1)

Trust me oh ye of little faith______Everette

Mastertech

My Feedback: (31)

My Finger is on the check out button.

Just wish I could find a direct fit lipo for my 12x

Anyone got a clue where I can get one?

Tim

Velco

Tim,

even better than LiPo is Life. Here you have it

http://www.hobbyking.com/hobbyking/s...dProduct=14076

unfortunately its not in stock, the only way to get it is to make a separate order and wait for it. It fits perfectly in JR 9303, so also is OK for 12x

Velco

maustin

My Feedback: (7)

Doug, Are you still using the HP bats with succcess? I found 1 flyer at Hemet that tried these and he thought they out performed his Rhino's. I'm think of tring a set since a friend of mine is a distributor.

maustin

2Sunny

Not sure if this qualifies as direct fit, but I'm second season with this thing and it is unbelievable! Sat all winter on the shelf and turned on last week like it was new. Runs for easy 10 hours, no memory loss, and charges using the supplied charging due to circuitry included in the factory design. Why JR and Futaba aren't using LiFe is beyond me.

[link=http://www.rcuniverse.com/forum/fb.asp?m=9722186]Hyperion's LiFe for Txs[/link]