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Old 03-24-2011, 05:37 PM   #1
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Default Life battery possible problem

Hey guys was just going over my buggy for the weekend and noticed my Life battery was bulging out on the sides. Is this normal or do I have a problem developing????? thanks
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Old 03-24-2011, 08:07 PM   #2
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bulging not good lol. get it out of the car and disposed of properly it could catch fire and cause some major damage.
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Old 03-24-2011, 09:27 PM   #3
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Not to dissuade you from doing the safe thing, but my RX LiFe battery has been more than slightly puffed for over a year and has been since the first discharge. The one I had prior did the same thing. Both are from Cobra RC but still run great with > 90% original power.
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Old 03-24-2011, 09:29 PM   #4
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I didn't think the life packs were suppose to do that. You know like the lipos do.
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Old 03-24-2011, 09:38 PM   #5
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How do you guys Charge a Life pack my charger says to charge on LIPO with it set at Auto. But last time i charged it it charged up to 8.4 and the Life is only 6.6 is that to much 8.4 .
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Old 03-24-2011, 09:53 PM   #6
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I have heard that LiFe batteries have to be broken in by cyclyng (discharging to a certain voltage and charging back up) several times. Maybe someone can explain how to properly break in LiFe packs including discharge rates and voltage levels
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Old 03-24-2011, 10:56 PM   #7
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here's a link to amain's site for a life battery - good info:

http://www.amainhobbies.com/product_...-Balancer-Plug
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Old 03-25-2011, 12:57 AM   #8
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Quote:
Originally Posted by thenova70ss View Post
How do you guys Charge a Life pack my charger says to charge on LIPO with it set at Auto. But last time i charged it it charged up to 8.4 and the Life is only 6.6 is that to much 8.4 .
Wow - that's way to much!
You definitely need a charger with a program that's dedicated to LiFe/A123 exclusively.
A full 2S LiFe pack will charge up to ~7.4 volts, but not higher.
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Old 03-25-2011, 03:52 AM   #9
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From my experience the first 10-15 charges/discharges are when the bulging occurs. Do not run the voltage too low (don't remember the #) and recharge on a LIFE capable charger. Puffed LiFe packs are not going to explode like a LiPo due to the chemistry.
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Old 03-25-2011, 04:41 AM   #10
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Thanks for the replies guys just was wondering if everyone elses was doing the same thing. Im happy with my life battery too so looks like it just happens.
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Old 03-25-2011, 11:50 AM   #11
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Quote:
Originally Posted by crashchris88 View Post
Hey guys was just going over my buggy for the weekend and noticed my Life battery was bulging out on the sides. Is this normal or do I have a problem developing????? thanks
What type of charger do you have? On mine you have to change it from LIPO to LIFE. The voltage per cell changes from 4.2 (Lipo) to 3.7 (LIFE)
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Old 03-25-2011, 12:23 PM   #12
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Quote:
Originally Posted by mthird View Post
Not to dissuade you from doing the safe thing, but my RX LiFe battery has been more than slightly puffed for over a year and has been since the first discharge. The one I had prior did the same thing. Both are from Cobra RC but still run great with > 90% original power.
You are correct. A small amount of bulging is normal. However if the pack looks like it's going to rupture, it is prone to fail. This is typically due to overcharging (as indicated above) or impurities in the cells.

As with any energy storage device, if you short it, there will be a fire hazard. Life packs do not, however start a self-sustaining fire like lipo batteries do. I have literally jabbed a screwdriver through a puffing life pack to prove this point. The end result was a light "pffft" from the released pressure (Insert cultural cuisine joke here).
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Old 03-25-2011, 01:37 PM   #13
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Check out hobbico www.hobico.com and their info on LiFe batteries. Great information. Unlike NiCd batteries, LiFe batteries are environmentally friendly.
Check it out.
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Old 03-25-2011, 03:20 PM   #14
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bulging/swelling battery is not good and will possibly be bad now or go away very soon. A friend of mine had problems with LiFe batteries when exposed to heat in a Nitro vehicle and is going back to LiPo.
Recommended to charge ea type of battery at their recommended charge profiles LiFe/LiPo, etc.
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