flying16150

My Feedback: (2)

I just purchased a used aircraft, I know the general rule of thumb here is to replace any thing that theres some question about , But I really hate to throw good batteries packs away if they dont need to be thrown away. And I would love to know anyway for future refference , can anyone tell me how to check these packs out to see if they are any good or not, they are the 7.4 2400mah Lithium Ion Batteries packs , I have 4 of them that I need to check out . I have no proublem buying new ones if they in fact need to be replaced . But still would like to know how to be able to tell if they need replaced or not.

dignlivn

Do you have an appropriate charger for them ?

Have you check the voltage on them ?
Do they look intact, no swelling or damage ?


Bob

mrbigg

My Feedback: (21)

Charge them and see how long they hold a charge after some use.

exeter_acres

My Feedback: (2)

Yep... in my experience, they just won't hold a charge for quite as long.......

do you know how old they are?

flying16150

My Feedback: (2)

I have a Acue Cycle elite Cahrger , they dont look damaged or swollen , they look all most new, just didnt know much about them , guy I got the plane from said he hadnt flown the plane in about two years , so I was wondering about the batteries being good or not , I know you can check ni cads but didnt know if you could check the lions the same way or not

Thunderbolt47

My Feedback: (8)

Isn't the life expectacy of a li-ion about two years anyway?

JOHNS3D

My Feedback: (5)

well, charge them...ans see the final volt on the accu cycle, should be around 8.4V. Use them a bit and see how good holds the load.

bgold

What brand are they, Fromeco hasn't made a 2400 pack for over 3 years

flying16150

My Feedback: (2)

They are Fromeco , I guess Ill go ahead and change them , my next question is if I change them to what they make now do I have to change the regulators? Im hopeing not, I have two2400 Maheach on their own regulator for the flight systemand another 2400Mah on the ingnition with a regulator also ? Can anyone tell me if I have to change the regulators to use what they sell now ?

dignlivn

I would bench test the charged up batteries and
each regulator. Use a volt meter to read the voltage.


Bob

mrbigg

My Feedback: (21)

You can use the same regulators. I would check you batts though. I have one 2400 and two 4800 Fromeco packs that were over 3 years old last year and were still going strong. Probaly over 4 years old now that I think about it.

flying16150

My Feedback: (2)

I guess I could go ahead and use them and just keep a eye out on them , but I just hate putting this bird in the air not knowing the history of them is all, they may be fine to use but still have a proubem useing anything I dont know about. would love to just switch them to ni cads , but not sure if I want the weight either. lol lol

mrbigg

My Feedback: (21)

Piece of mind is worth every penny spent.

flying16150

My Feedback: (2)

That is so true, Im wondering if I switch the batterie packs out to ni cads if I would really pick that much more weight up in doing so , Its a BME Edge 540 30% its weight right now with the set up as described is 16lbs, I could just take the regulaters out and switch it to a Ni cad batteries system in, with the ni cads I wouldnt need the reglators would I?

dignlivn

IMO, on 30% plane make sure you have enough mAh's
to power those size servos.


Bob

SENZA

heres what you do remove the canopy flip the plane upside down shake until the batts and reg,s fall out
flip over install 1 A123 2300 pack and go fly ! and never look back



o and add a optical kill switch

flying16150

My Feedback: (2)

I dont have a clue as to what your tal;king about as far as those type of batteries , but hey Im willing to learn, I heard you dont get allot of flight time with those type of Batteries, tell me more about them what I should get and so on and so on.

bgold

Don't be cheap, replace them with new Fromeco 2600's and if you are using JR type plugs from your regulator get 2 outputs from each regulator and plug into your receiver and operate worry free except for you switches. (New can of worms)

flying16150

My Feedback: (2)

Oh Im not going Cheap here , I have two regulators with two seperate leads so I would be useing two batteries and both plug into the reciever. switches have already been installed and they are good ones. , the plane was already set up with two batteries and two regulators both will plug into my reciever. The switches already were being used with the current system, all Ive done is changed out the reciever in it. It allready has the optical kill on the system.

SENZA

Fly .. heres some links to help answer your Questons :[link=http://www.hangtimes.com/a123_batteries_for_giants_faq.html]A123 batterys[/link] i personally use a [link=http://www.fmadirect.com/Detail.htm?item=2306§ion=45]FMA CHARGER [/link]

also you may want to contact tom at [link=http://www.wildharerc.com/index.html]wildhare r/c[/link] he has had allot of flight time with them ...

some may not agree but A123 are the future of r/c
these are to lions what nickle metal was to nicad

also visit his forums here on rcu he just recently posted this [link=http://www.rcuniverse.com/forum/m_9518126/tm.htm]the care and handling of A123 [/link]