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Old 05-17-2009, 04:20 PM   #1
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Default Looking for Lipo links

I am thinking about going Lipo and not having experience in the electrical side of the hobby I was wondering if there were any links that you guys could suggest that would let me know what is what with Lipo.

Also any guidelines for charging period as I am unsure about discharging and cycling.
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Old 05-17-2009, 04:44 PM   #2
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www.smc-racing.com
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Old 05-17-2009, 05:46 PM   #3
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I am about to make the LiPo switch myself. I hear that SMC is one of the best in terms of price and quality so I think I will order off them. Just dont know which pack to get for my brushless Slash. Dont know whether to go 24C, 25C, 28C, and whether to go 3200maH , 4000maH, or 500maH.
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Old 05-17-2009, 06:16 PM   #4
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Mah is runtime. In a Slash or other 2wd offroad vehicle, there is little ampdraw due to very limited traction. The C rating tells you the maximum continuous amp draw of the pack. To find out multiply the Amp hours by the C rating.

SMC sells a 5000mah 40C pack
5000mah pack = 5 amp hrs
So: 5 Amp hrs X 40C= 200Amps
The pack can sustain a 200Amp draw.

HOWEVER, the wires and connectors used cannot sustain a 200Amp draw. What this does tell us, is that when under load, there will be less of a voltage drop vs a pack with a lower continuous amp draw rating.

So to find out which packs are supposedly better, one must use the above formula to find out. The C rating number cannot ALONE be used to compare packs

Lets take these examples:

SMC 5000mah 40C pack = 200A continuous
SMC 4700mah 40C pack = 188A continuous
Reedy 5000mah 35C pack = 175A continuous
SMC 6000mah 28C pack = 168A continuous
IP 5000mah 30C pack = 150A continuous
TP 3200mah 40C pack = 128A continuous
SMC 5200mah 24C pack = 124.8A continuous


etc etc etc, there are MANY packs out there...

Also, dont buy a pack solely on the continuous amp rating. Look at what you need.

ALL of these packs are very good.

grifballs: find out how much room the Slash has for the battery, find some that fit, and then compare what you need. As stated above, you will not need the best of the best for amp draw, as you will not be pulling anywhere close to the above numbers.

I myself just purchased the Reedy 5000mah 35C pack to use in my 13.5 Superstock TC car. I decided this particular pack because it was black, used bullet connectors and had not battery humps. I was going to buy any pack that was 4500mah or larger to give me a nice safety margin in pack discharge, but I wanted something with a higher continuous amp discharge rating so the pack wouldn't feel soft at the end of 6 minutes.
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Last edited by rezenclowd3; 05-18-2009 at 12:33 AM.
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Old 05-18-2009, 05:51 AM   #5
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first off most of the c ratings are overrated. some of the best lipo batts on the market are from Spec Point Concepts. they have great customer service and really good prices. what are you lookin to drop the lipo in? most of the packs have different dimensions, so the size of your batt tray will become a factor.
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Old 05-18-2009, 10:35 AM   #6
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Here's a couple -

http://www.maxamps.com/lipo-care.php

http://www.batteryuniversity.com/
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Old 05-18-2009, 10:49 AM   #7
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Quote:
Originally Posted by Duster_360 View Post
Thank you this the kind of stuff I was looking for.
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Old 05-18-2009, 03:37 PM   #8
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dont buy from max amps they are over rated and over priced, spc is the way to go http://www.spcracing.com/
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