I need battery help
07-01-2015, 02:56 PM
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I need battery help
I'm buying a 2 wheel drive slash and want to buy a lipo battery and charger. I know nothing about batteries and was wondering if someone could tell me what all the different specifications mean and translate to in driving performance. Thanks!
07-01-2015, 06:32 PM
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I will try to make at short as possible but to the point.
number of cells(S): a lipo cell is 3.7v, one cell is called a 1S, so a 7.4v battery would be a 2S and and 11.1v would be a 3S and so on. This is basically the amount of power that goes to the motor, the higher the voltage the faster the motor turns. Making a motor faster also adds more stress to your car and your electronics, so for a 2wd slash I would recommend a 2S battery for normal use.
mAh or A: the amount of juice your battery can hold. The higher the mah the more juice you can get from your battery, but with more juice comes more space and weight. a typical mah rating for 2S packs is 5000 mah and that should fit most cars. This value will help you calculate the discharge rate of your battery. More on that below.
C Rating: This is the amount of power your battery can give. Normally the higher C rating the batter, but for your car I would say a 30 or more C rating pack would work very good. C means the capacity of your battery, so if your battery has 5000 mah or 5A, one C for you would be 5A. sO lets say you get a 5000 mah 30c battery, that means your battery can give a 150A output constantly. Never charge your lipo batteries at more than 1c (so e.g. a 5000 mah pack should never be charged at more that 5A) unlessthe producer of the pack states otherwise.
P or cell arrangement: this tells you how the batteries are wired up. This rating is most of the time not used as most packs are 1P. for example if i have a 3s1p pak that means thst there is 3 cells running in series, giving me a total of 3 cells. But if i have a 3s2p pack that means that there are 2 3S packs running in parallel, which ends up giving more juice but more weight, with a total of 6 cells.
As for a charger, I would recommend an 80w thunder ac6 dual power.
Hopefully I was clear enough and sorry if I wasn't, kinda wrote this in a rush
but please, PLEASE read all you can about lipo safety, how to handle lipos, how to charge lipos and how to storage lipos, because we dont want you to get hurt or burn your house down. Lipos are safe as long as you take a few simple safety methods. If you are not going to follow them, do not buy lipos.
Lipo terminology: http://www.instructables.com/id/Lith...mer-Etiquette/
lipo safety: http://www.tjinguytech.com/charging-.../lipo-problems
http://www.icharger.co.nz/articles/A...ety-Guide.aspx
http://www.rogershobbycenter.com/lipoguide/
http://www.rcuniverse.com/forum/rc-c...l#post11170970
number of cells(S): a lipo cell is 3.7v, one cell is called a 1S, so a 7.4v battery would be a 2S and and 11.1v would be a 3S and so on. This is basically the amount of power that goes to the motor, the higher the voltage the faster the motor turns. Making a motor faster also adds more stress to your car and your electronics, so for a 2wd slash I would recommend a 2S battery for normal use.
mAh or A: the amount of juice your battery can hold. The higher the mah the more juice you can get from your battery, but with more juice comes more space and weight. a typical mah rating for 2S packs is 5000 mah and that should fit most cars. This value will help you calculate the discharge rate of your battery. More on that below.
C Rating: This is the amount of power your battery can give. Normally the higher C rating the batter, but for your car I would say a 30 or more C rating pack would work very good. C means the capacity of your battery, so if your battery has 5000 mah or 5A, one C for you would be 5A. sO lets say you get a 5000 mah 30c battery, that means your battery can give a 150A output constantly. Never charge your lipo batteries at more than 1c (so e.g. a 5000 mah pack should never be charged at more that 5A) unlessthe producer of the pack states otherwise.
P or cell arrangement: this tells you how the batteries are wired up. This rating is most of the time not used as most packs are 1P. for example if i have a 3s1p pak that means thst there is 3 cells running in series, giving me a total of 3 cells. But if i have a 3s2p pack that means that there are 2 3S packs running in parallel, which ends up giving more juice but more weight, with a total of 6 cells.
As for a charger, I would recommend an 80w thunder ac6 dual power.
Hopefully I was clear enough and sorry if I wasn't, kinda wrote this in a rush
but please, PLEASE read all you can about lipo safety, how to handle lipos, how to charge lipos and how to storage lipos, because we dont want you to get hurt or burn your house down. Lipos are safe as long as you take a few simple safety methods. If you are not going to follow them, do not buy lipos.
Lipo terminology: http://www.instructables.com/id/Lith...mer-Etiquette/
lipo safety: http://www.tjinguytech.com/charging-.../lipo-problems
http://www.icharger.co.nz/articles/A...ety-Guide.aspx
http://www.rogershobbycenter.com/lipoguide/
http://www.rcuniverse.com/forum/rc-c...l#post11170970
