#1
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Li-Poly
Ok, I am getting a car with Li-Poly already installed. I am wondering a few basic things about them.
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#2
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2. Once you see preformance dropping, you need to stop and charge. You will definatly be able to tell when the voltage is falling. 3. You can always run a hotter motor to a certain extent. Once your motor starts pulling more amps than the fets can give out, they will burn. Batterys have nothing to do with what motor you can run. 4. Depends on how much you use yours. If its just 2s (2 in series) which most are you will probably have about 750mAh of playtime which is about, hmm... I wanna say 15-20 minutes with a stock motor before youll need to charge. If you want to run longer, then get more packs. But remember your gonna have to stop and let the motor cool every now and then. I have a couple other homemade devices with lipoly cells in them and they take about 12 hours to charge from 3 volts. Hope this will help ya, Mabye someone else here knows more about chargers
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#3
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2 you can purchase at any hobby store a power shut off, I forget what the real name is right now, that will cut power when the battery is spent. 3 with this setup the motors I have run are helimax HMXE8004 and haven't blown stock fets yet. but make sure you follow the manufacters instructions for what they recommend for their motor. 4 if you get 4 batteries and buy the right charger you can charge all of them while playing with the one. like I said Electrifly makes a charger that can charge 4 Li-pos at once but its like 100 bucks. also tommygreen23 2s 7.4 volt 750mAh wont even make an xmod move but put in a 4s 7.4 volt li-po 1440 mAh in it and watch it burn rubber for a long time. like I said Electrifly makes one heck of a charger and batteries set up for racing. Last edited by xmodsnut; 10-25-2007 at 01:42 AM.. |
#4
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Here is a good charger from batteryspace http://www.batteryspace.com/index.as...OD&ProdID=1121
The connector used for charging will have to be changed to match the what is on your battery pack. I don't recommend using the clips that are supplied with the the charger, but can be used. |
#5
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Just in case you don't believe me check out this li-poly kit from atomicmods. 460mAh and 10C rating. Obviously it can move a xmod car... http://www.atomicmods.com/Products/X...ck__10398.aspx Just because you have bigger batteries does not mean your fets can stand more current draw. They will blow up if you put a motor in that draws any more amps than the fets are rated for. By the way, 4s means 4 in series which would be about 14.8 volts. It sure would burn rubber for a LOOONG time with that. If you don't know what your talking about, please don't talk.
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#6
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Well I just checked my booklet that came with my batteries and my battery is actually a 2S2P by the time I put it together and in my titan. it is so fast with the top speed gearing and helimax motor that its not funny. oh and by the way I am running stock evo fets.
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#7
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This is the charger I used and it doesn't take 12 hours to charge!http://cgi.ebay.com/XMOD-EVO-HD-Lith...QQcmdZViewItem
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