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Old 10-21-2011, 04:49 PM   #1
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Default Lipo Vs NIMH

Ive got a lipo 5000mah 2s 40c battery and love it. Safety just bothers me. My car takes a beatin. I like running it when its cold out in the snow. And to charge, discharge and store a lipo I just dont trust Ill rather not have a possible fire due to my RC car. I am wondering if I was to get a 5000mah 7.2 volt NIMH battery how will it compair to the lipo performance wise not weight I know lipo is lighter. Should I go for the 7 cell? I got a rustler with the mamba max pro esc and a castle 6900KV motor. NIMH batterys seem to be more stable, ALOT safer and saftey is what my concern is. How are lithium ion batterys?
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Old 10-21-2011, 04:58 PM   #2
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apple to orange.

lipos are no safer then nimh packs.

both can cause fires.

both require some maint' to a degree.

in snow most packs will servive. just dont leave it in the snow. running the pack its going to get worm so thats no issue.

keep a pack at storage mode (7.5-8.0 volts) and never have a problem with a fire, ive been using lipos for 4 years never had one catch fire.
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Old 10-21-2011, 05:01 PM   #3
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nimh batterys are alot safer then lipo's correct?
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Old 10-21-2011, 05:01 PM   #4
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nimh batterys are alot safer then lipo's correct?
not anymore. cells these days can take some ABUSE!

now if you are using those EBAY special packs then yes a loaded gun is safer then those things.
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Old 10-21-2011, 05:03 PM   #5
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what happends if a lipo freezes? Can I leave a lipo out in the garage over the winter just got to warm it up before charging it?
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Old 10-21-2011, 05:06 PM   #6
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what happends if a lipo freezes? Can I leave a lipo out in the garage over the winter just got to warm it up before charging it?
i would not leave a lipo in a cold garage over winter no.

but you can get one of those ammo or lipo safe bags for cheap on any of the sites now adays. they prevent a lipo fire and keep it contained in the bag.

dont store any lipo below a 70* room temp. i would advise against it at least.
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Old 10-21-2011, 05:06 PM   #7
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Also, What would cause a lipo to catch fire during storage. Storage is what scares me. I am always near my lipo when charging it.
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Old 10-21-2011, 05:12 PM   #8
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Also, What would cause a lipo to catch fire during storage. Storage is what scares me. I am always near my lipo when charging it.
leaving it at flat at 3.1 per cell or lower. or leaving it fully charged for long periods of time.

Most packs dont catch fire they just swell also known as puffing.

just check the voltage every few weeks and keep it between 7.2-8.0 volts.
most chargers now adays have a discharge and storage mode.

about half way through winter i cycle my packs if they have not been used for a month or two fully charge em then discharge them then return to storage voltage.

There are lots of tech articles about the same thing on this site.
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Old 10-21-2011, 05:15 PM   #9
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Yea theres no challege man lipos are just better and so much easyier and cheaper to maintain.
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Old 10-21-2011, 05:20 PM   #10
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Yeah. I wish they could freeze Ill store them outside all winter LOL Still think I might go with nimh batterys. Lipos just scare me. After seeing a 5000mah blow it looked pretty extreme. are Lipo bags 100% safe? If i put a lipo inside a lipo bag and put that inside a metal tool box will that turn out being 100% safe? Like could I sit the toolbox on a carpeted floor?
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Old 10-21-2011, 05:25 PM   #11
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Originally Posted by ridinloudprod View Post
Yeah. I wish they could freeze Ill store them outside all winter LOL Still think I might go with nimh batterys. Lipos just scare me. After seeing a 5000mah blow it looked pretty extreme. are Lipo bags 100% safe? If i put a lipo inside a lipo bag and put that inside a metal tool box will that turn out being 100% safe? Like could I sit the toolbox on a carpeted floor?
the lipo bag inside a metal box should be fool proof.
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Old 10-21-2011, 05:26 PM   #12
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Ah What would scare me is the fire inside the lipo bag heating up the metal tool box and catchen what ever the metal box is sitting on on fire. I do have one of those fire safe boxes. the ones that are like 10x16x3 or w.e
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Old 10-21-2011, 05:27 PM   #13
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Originally Posted by smokinu View Post
i would not leave a lipo in a cold garage over winter no.

but you can get one of those ammo or lipo safe bags for cheap on any of the sites now adays. they prevent a lipo fire and keep it contained in the bag.

dont store any lipo below a 70* room temp. i would advise against it at least.
I'll have to disagree with that one. I used to keep my lipos fully charged in the refrigerator.
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Old 10-21-2011, 05:30 PM   #14
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I like nimh better than lipos.
I ALWAYS have a habit to fully charge my NIMH packs when im storing them.
I try to cycle them once when i take them out of storage.
The maintenece doesnt bother me at all. Lipo's you have to do more maintence.
I have never seen a lipo fire either at the tracks i race at, only puffed lipos.

I'm just used to the "plug and play" aspect that NIMH has.
Lipo's have to be balanced, Nimh's do not.
There's just so many things you have to do to a lipo to keep it's performance to last. If one small thing goes wrong you can ruin the lipo.
Every once in a while I'll see someones ESC let out the magic smoke.
That's probably the reason why i have not smoked any of my esc's.

Personally Id rather play in the snow with a Nimh over a lipo.
I do it all the time, just let the battery dry for a few hours before i recharge it.
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Old 10-21-2011, 05:33 PM   #15
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I like nimh better than lipos.
I ALWAYS have a habit to fully charge my NIMH packs when im storing them.
I try to cycle them once when i take them out of storage.
The maintenece doesnt bother me at all. Lipo's you have to do more maintence.
I have never seen a lipo fire either at the tracks i race at, only puffed lipos.

I'm just used to the "plug and play" aspect that NIMH has.
Lipo's have to be balanced, Nimh's do not.
There's just so many things you have to do to a lipo to keep it's performance to last. If one small thing goes wrong you can ruin the lipo.
Every once in a while I'll see someones ESC let out the magic smoke.
That's probably the reason why i have not smoked any of my esc's.

Personally Id rather play in the snow with a Nimh over a lipo.
I do it all the time, just let the battery dry for a few hours before i recharge it.

How is the performance of a nimh battery compaired to a lipo.
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