Jump to content


LiPo Battery Warning!!!


  • Please log in to reply
341 replies to this topic

#321 ga mercs

ga mercs

    Enthusiast

  • Members
  • PipPip
  • 241 posts
  • Gender:Male
  • Location:savannah ga
  • Country:

Posted 23 August 2012 - 12:21 PM

niko gypsy doesnt know what he is talking about    LOL    turnigy not tenergy,,,,,,,,,,jk  ...........i have 8 of the nanotech lipos they are great and cheap  ....i have 1 7.4volt that one of the cells is getting fat so i dont know how much longer it will last ,,i have had it for 6 months and it was only $7 so if i chunk it in the trash oh well i got my 7 dollars worth

#322 Standard4130

Standard4130

    Enthusiast

  • Members
  • PipPip
  • 78 posts
  • Gender:Male
  • Location:TX
  • Interests:Current Interest are.......Machining/Manufacturing, Airsoft or any projectile shooting device, Aviation, Motorcycling, Fishing, Photography, Music........And so many more. (I'm lazy and will add later....LOL)
  • Country:

Posted 23 August 2012 - 08:17 PM

The mentioned 14.8v is a Zippy Compact from Hobby King for about $15. If you leave your choice battery on screen for a few minutes they'll discount it below the listed price :)

#323 gcw360

gcw360

    Supreme Guru

  • Super Moderator
  • PipPipPipPip
  • 11,496 posts
  • Gender:Male
  • Location:New Jersey
  • Interests:Airsoft (Especially repair and customizing), Fly Fishing, Fossils (Especially Dino), Snakes, Photography
  • Country:

Posted 24 August 2012 - 06:49 PM

View PostStandard4130, on 23 August 2012 - 08:17 PM, said:

The mentioned 14.8v is a Zippy Compact from Hobby King for about $15. If you leave your choice battery on screen for a few minutes they'll discount it below the listed price :)
Good luck with a 14.8 LiPo...there WILL be a catastrophic repair in your near future.

#324 Standard4130

Standard4130

    Enthusiast

  • Members
  • PipPip
  • 78 posts
  • Gender:Male
  • Location:TX
  • Interests:Current Interest are.......Machining/Manufacturing, Airsoft or any projectile shooting device, Aviation, Motorcycling, Fishing, Photography, Music........And so many more. (I'm lazy and will add later....LOL)
  • Country:

Posted 24 August 2012 - 10:44 PM

gcw360..............And why's that?? It's been in this current configuration for 2 years now with well over 50,000 rounds. The only thing I've replaced is a limp spring & I broke the gear end off my tappet plate once..... I'd say $20 worth of parts a maintenance issue but not catastrophic. I actually downgraded from running a sp170 because heavy bb's cost too much to run on full auto.....LOL. Choice parts & preventative maintenance can mean all the difference. I don't understand why some people expect high performance from their AEG's but don't want to do the work to keep them running tip top. All my firearms get maintained after an outing at the range so why shouldn't my equally expensive airsoft versions too? Anyways, you have to pay to play.......And even if I blew the gearbox a new one would set me back $30 for this particular gun which is like two bags of bb's....:) What about a 14.8v lipo scares you? I can recommend some choice parts to make it run butter smooth.

#325 gcw360

gcw360

    Supreme Guru

  • Super Moderator
  • PipPipPipPip
  • 11,496 posts
  • Gender:Male
  • Location:New Jersey
  • Interests:Airsoft (Especially repair and customizing), Fly Fishing, Fossils (Especially Dino), Snakes, Photography
  • Country:

Posted 25 August 2012 - 03:15 AM

View PostStandard4130, on 24 August 2012 - 10:44 PM, said:

gcw360..............And why's that?? It's been in this current configuration for 2 years now with well over 50,000 rounds. The only thing I've replaced is a limp spring & I broke the gear end off my tappet plate once..... I'd say $20 worth of parts a maintenance issue but not catastrophic. I actually downgraded from running a sp170 because heavy bb's cost too much to run on full auto.....LOL. Choice parts & preventative maintenance can mean all the difference. I don't understand why some people expect high performance from their AEG's but don't want to do the work to keep them running tip top. All my firearms get maintained after an outing at the range so why shouldn't my equally expensive airsoft versions too? Anyways, you have to pay to play.......And even if I blew the gearbox a new one would set me back $30 for this particular gun which is like two bags of bb's.... :) What about a 14.8v lipo scares you? I can recommend some choice parts to make it run butter smooth.
Hi Standard4130.  I hope my post didn't put you off.  You sound like the kind of airsofter that can handle mods and upgrades.  More often than not that is not the case though based on the guns I repair (this is not a through down to Forum members!!!).  I am basing my comment on a number of years of experience where every time I have encountered a customer using a 14.8 the gun shredded in like 20K rounds or less.

I am  glad to hear you make it work.

#326 Standard4130

Standard4130

    Enthusiast

  • Members
  • PipPip
  • 78 posts
  • Gender:Male
  • Location:TX
  • Interests:Current Interest are.......Machining/Manufacturing, Airsoft or any projectile shooting device, Aviation, Motorcycling, Fishing, Photography, Music........And so many more. (I'm lazy and will add later....LOL)
  • Country:

Posted 25 August 2012 - 01:58 PM

View Postgcw360, on 25 August 2012 - 03:15 AM, said:

Hi Standard4130.  I hope my post didn't put you off.  You sound like the kind of airsofter that can handle mods and upgrades.  More often than not that is not the case though based on the guns I repair (this is not a through down to Forum members!!!).  I am basing my comment on a number of years of experience where every time I have encountered a customer using a 14.8 the gun shredded in like 20K rounds or less.

I am  glad to hear you make it work.

No problem, You didn't put me off and I understand where you are coming from with regards to some players & their equipment. I like to explain upgrades to an AEG like explaining upgrades to a car. Just like a car.....Doubling the HP with forced induction does not mean just installing a turbo/supercharger.......... other parts are needed for reliability concerns & sometimes a new/better motor is the ticket.... :). Aside from purchasing a quality mosfet w/soft start ($90), most other upgrades needed to pull off a reliable 14.8v setup are cheap....or at least what I consider cheap. My upgrade list is short & typically includes a lipo ($10to$15), wiring ($7), a spring ($15), Motor ($25to$35), piston ($20) & bucking ($6)............... A good shim job if the stock ones are whack, adjust AOE if necessary, I like to space my springs for max output, I mod the tappet plate for more stroke, adjust hop-up return spring tension & lightly lube where it's needed. On a KWA running a thinner grip helps gauge motor temp........VFC's fit perfect. So to sum it up.....close to $200 worth of parts on top the price of the gun itself gets me a beast of a gun.........And it's worth the premium.......LOL

#327 lester

lester

    Enthusiast

  • Members
  • PipPip
  • 117 posts
  • Gender:Male
  • Interests:Airsoft (obviously), Running, Firearms
  • Country:

Posted 24 November 2012 - 02:48 PM

Is this battery OK for my Kwa's?:
http://www.hobbypart...-2s1p-2222.html

Thanks.

#328 niko_gpsy

niko_gpsy

    What's a Warranty?

  • Super Moderator
  • PipPipPipPip
  • 5,875 posts
  • Gender:Male
  • Location:Atlanta, GA
  • Interests:Keeping those damn squirrels from putting their filthy little paws on my peaches in my backyard. Oh, Yes. It's not just a hobby, its a passion!!
  • Country:

Posted 24 November 2012 - 02:49 PM

That battery is just fine.

#329 Chuck S

Chuck S

    Guru

  • Members
  • PipPipPipPip
  • 1,255 posts
  • Gender:Male
  • Location:Cleveland, Ohio
  • Country:

Posted 25 November 2012 - 06:30 AM

Should work but...

The milliampere-hour (mAh) rating is how long the battery will last before it needs recharging.  This battery has a very low capacity, only 850mAh.

Even my smallest 7.4v LiPO has a 1300mAh capacity.  It's my understanding that LiPO batteries are easily damaged if discharged below a certain voltage level.  A low capacity battery will reach that point quicker than one with more capacity.

-- Chuck

#330 SgtThorne

SgtThorne

    Newbie

  • Members
  • Pip
  • 12 posts
  • Gender:Male
  • Location:Central Florida
  • Interests:Airsoft, 3d art, digital art, gaming, cooking, WOMEN. :D
  • Country:

Posted 17 December 2012 - 07:20 PM

Hello all, I have a couple questions regarding Lipoly's, and ROF with my stock SR5 (llllllllllllove it!)

I just recently purchased the Firefox 7.4v 1200 mah 20C Li-po (2pcs) and a Matrix 7.4 1300 25c stick battery brand new, with a Tenergy Balance charger for both lipo's. Now, I've never used lipo's before as I have two intellect 1600mAH "nun-chuck" batteries that work  just fine.

Question is..why is the ROF with the Intellect batteries HIGHER than they are with the Lipoly's?
When I use the 1600's with the SR5 the ROF is noticably higher...why? Are the batteries no good? They don't seem to have any visible defects that I'm warned to look for... I also use a battery bag for the sake of safety. Both batteries have been charged (not sure how the charger works, Tenergy didn't provide very detailed instructions) though I'm not sure how long I should have the battery charging *it's been an hour*.....I was told that 7.4's are on par/equal to a 9.6 and...oh god Im rambling..

ANYWAY, I'm not sure if this is normal, would it damage my rifle? I've sent three emails to both companies and have yet to get a reply (1 month now)... this may or may not be something you guys can help me with. I've already googled so much it gives me a headache so ANY help to lay my fears to rest regarding lipo's would be greatly appreciated of course!

Thank  you.

#331 vanevery

vanevery

    Specialist

  • Members
  • PipPipPip
  • 981 posts
  • Gender:Male
  • Country:

Posted 17 December 2012 - 10:14 PM

What are the volts on the Intellect 1600mah batteries?
What battery charger are you using, specifically?

Typically speaking, when you use 7.4v Li-po batteries, you need more amps.
So, anything less than 2000 mah's w/ a 7.4v Li-po is not helping you.

#332 Chuck S

Chuck S

    Guru

  • Members
  • PipPipPipPip
  • 1,255 posts
  • Gender:Male
  • Location:Cleveland, Ohio
  • Country:

Posted 18 December 2012 - 04:24 AM

Electrical power is measured in Watts:  Volts x Amps.  The motor requires or draws a certain Wattage and since the formula is linear when the Volts go down the Amperage draw goes up:  you need more Amps.  The motor's speed and hence the gun's cyclic rate is voltage driven assuming the battery supplies enough amps.

Battery capacity is measured in Amphours (1 amp for 1 hour is an Amphour).  In this case it's milliamp hours (1/1000 amp) but the wattage demands still drive the system.  A 7.4v battery will be drained of more (milli)amphours than an 11.1v for the same wattage.  Battery voltage drops under load too.  You see this every morning when you start your car.  

Read the instructions for your battery charger.  The charger's menus are a little daunting at first and there are different settings for LiPOs and NIMH.  My Tenergy battery charger shuts off when the battery is charged -- yours should too.  New LiPOs benefit from several controlled discharge/charge cycles and the Tenergy will do this too.

-- Chuck

Edited by Chuck S, 18 December 2012 - 04:26 AM.


#333 niko_gpsy

niko_gpsy

    What's a Warranty?

  • Super Moderator
  • PipPipPipPip
  • 5,875 posts
  • Gender:Male
  • Location:Atlanta, GA
  • Interests:Keeping those damn squirrels from putting their filthy little paws on my peaches in my backyard. Oh, Yes. It's not just a hobby, its a passion!!
  • Country:

Posted 18 December 2012 - 05:10 AM

Very nice explanation Chuck. :thumbsup:

#334 SgtThorne

SgtThorne

    Newbie

  • Members
  • Pip
  • 12 posts
  • Gender:Male
  • Location:Central Florida
  • Interests:Airsoft, 3d art, digital art, gaming, cooking, WOMEN. :D
  • Country:

Posted 18 December 2012 - 07:01 AM

View PostChuck S, on 18 December 2012 - 04:24 AM, said:

Electrical power is measured in Watts:  Volts x Amps.  The motor requires or draws a certain Wattage and since the formula is linear when the Volts go down the Amperage draw goes up:  you need more Amps.  The motor's speed and hence the gun's cyclic rate is voltage driven assuming the battery supplies enough amps.

Battery capacity is measured in Amphours (1 amp for 1 hour is an Amphour).  In this case it's milliamp hours (1/1000 amp) but the wattage demands still drive the system.  A 7.4v battery will be drained of more (milli)amphours than an 11.1v for the same wattage.  Battery voltage drops under load too.  You see this every morning when you start your car.  

Read the instructions for your battery charger.  The charger's menus are a little daunting at first and there are different settings for LiPOs and NIMH.  My Tenergy battery charger shuts off when the battery is charged -- yours should too.  New LiPOs benefit from several controlled discharge/charge cycles and the Tenergy will do this too.

-- Chuck

Chuck, thanks so much for your reply.. so your charger shuts off when the battery is charged? Is it the Tenergy Balace Charger (small silver colored box, /w two leds and on/off switch) or another type? If mine is supposed to do the same then I think this unit is fried.. and it's brand new.. guess i'll have to call Evike about replacing this unit?

Vanevery,

"What are the volts on the Intellect 1600mah batteries?"  1.2v
"What battery charger are you using, specifically?"  http://www.evike.com...oducts_id=30777


"Typically speaking, when you use 7.4v Li-po batteries, you need more amps.
So, anything less than 2000 mah's w/ a 7.4v Li-po is not helping you."

So from this I can derive that the Evike tech that I had spoken to prior to purchasing the two battery packs is full of sh*t, and has no clue what he was talking about when he advise me that the amps(?) on both would provide me "high ROF without sacrificing the internals.."  one is a 1200 (20c), the other 1300 (25c)

SO I guess this brings me back to one of my questions about the SR5, but I'll ask you guys here.. which small stick-type Lipoly would be prefferable for the SR5?  Good ROF, long life, without having to do anything with the internals (for now) and, which brands I should stay away from...  annnd,  I guess I have two batteries that aren't doing squat for me.. money wasted..:(

#335 Chuck S

Chuck S

    Guru

  • Members
  • PipPipPipPip
  • 1,255 posts
  • Gender:Male
  • Location:Cleveland, Ohio
  • Country:

Posted 19 December 2012 - 04:06 AM

My charger is the TB6AC from the Pro Shop (here).  These all seem to be the same basic charger regardless of brand.  Mine has a built in 110v power supply (the AC in the model number I guess).  All the charging algorithms are in the charger's software.

I'm using the BOL 11.1v 1400mHa 15C LiPo (also from the Pro Shop) as well.

I also have two 7.4v LiPOs which work perfectly and provide a more realistic cyclic rate.
Spyder 1300mAh 15C
Power Wing 1500mAh 30C

KWA recommends a C-rating of no more than 15C so my Power Wing battery is, perhaps, too powerful as it will output 45 amps momentarily.

Quote

So what does the C rating on a lipo mean? For starters, the C in C Rating stands for capacity. To break it down to its simplest terms, the C rating is the maximum safe continuous discharge rate of a pack. If you see 10C on your battery, it means it can be discharged at 10 times that pack's capacity. Capacity refers to the milliamp-hour rating of the battery, which will be listed as a number followed by mAh (2000mAh, for example).

Here's the easy way to find your battery's discharge rate just multiply the number from the C rating by the pack's capacity. Keep in mind that 1000 milliamps equals one amp. Here's an example, using an 11.1V 2000mAh 10C

11.1 volt 2000mAh -10C
2000 milliamps = 2 amps
2 Amps x 10 = 20 amps continuous discharge


This means that you can safely draw up to 20 amps continuously from that 11.1V 2000mAh 10C without doing damage to your battery.

-- Chuck

#336 SgtThorne

SgtThorne

    Newbie

  • Members
  • Pip
  • 12 posts
  • Gender:Male
  • Location:Central Florida
  • Interests:Airsoft, 3d art, digital art, gaming, cooking, WOMEN. :D
  • Country:

Posted 21 December 2012 - 06:34 AM

Chuck, again thanks for the advice man.. I'm gonna try out those two brands. I'd hate for anything to happen to my build internaly because of a bad battery..:(

Thanks again to all of you..:D

#337 andye

andye

    Enthusiast

  • Members
  • PipPip
  • 106 posts
  • Country:

Posted 20 April 2013 - 11:12 PM

Think Of this way (comparing it to a car)....

Voltage is the fuel quality (more voltage means faster motor spins)

The mah rating is the size of the fuel tank

Edited by andye, 20 April 2013 - 11:13 PM.


#338 muffinman1604

muffinman1604

    Enthusiast

  • Members
  • PipPip
  • 90 posts
  • Gender:Male
  • Location:PA
  • Interests:Airsoft. xbox. PC gaming, building, and programming. Football.
  • Country:

Posted 21 April 2013 - 06:38 PM

View Postandye, on 20 April 2013 - 11:12 PM, said:

Think Of this way (comparing it to a car)....

Voltage is the fuel quality (more voltage means faster motor spins)

The mah rating is the size of the fuel tank

That is a great way too put it. Well said :thumbsup:

#339 Comissar

Comissar

    Enthusiast

  • Members
  • PipPip
  • 32 posts
  • Gender:Male
  • Country:

Posted 29 May 2013 - 02:32 PM

today i got some batteries from my second airsoft love, G&P, they are 7.4V 1200mah mini deans and wait for it.... 30c, what damage would this do to a gun, if any? i doubt that i can return them, fyi, i ordered form redwolf :(

Edited by Comissar, 29 May 2013 - 02:33 PM.


#340 niko_gpsy

niko_gpsy

    What's a Warranty?

  • Super Moderator
  • PipPipPipPip
  • 5,875 posts
  • Gender:Male
  • Location:Atlanta, GA
  • Interests:Keeping those damn squirrels from putting their filthy little paws on my peaches in my backyard. Oh, Yes. It's not just a hobby, its a passion!!
  • Country:

Posted 29 May 2013 - 02:43 PM

It may be 30amps but since its a low voltage battery you don't need to worry about damage.  Lower voltage is less efficient at pushing current through so no worries like if it was a 11.1v.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users