blewett89 Posted February 7, 2014 Share Posted February 7, 2014 I'm looking at upgrading to brushless for my tamiya db01 I've found a etronix 2.0 with 9.0 motor and wondered what lipo battery would be required to run as I can work out c and mah but not sure if enough to run the setup? http://www.modelsport.co.uk/etronix-photon-2.0-1-10-brushless-system-9.0r/rc-car-products/368725 Quote Link to comment Share on other sites More sharing options...
oodboo Posted February 7, 2014 Share Posted February 7, 2014 I think you need to think more about finding a battery that fits ok rather than worry about C rating. MAH is just how long the battery run for, eg a 4000mah battery well last twice as long as a 2000mah battery. Quote Link to comment Share on other sites More sharing options...
oodboo Posted February 7, 2014 Share Posted February 7, 2014 Doesn't really matter what battery you get, you're buggy will fly with a 9t motor in it. Quote Link to comment Share on other sites More sharing options...
mugen mark Posted February 7, 2014 Share Posted February 7, 2014 you only want a 2s,for your buggy,with a 9t it be fast enough,just check the space avaible,hobbyking have a huge range of sizes, Quote Link to comment Share on other sites More sharing options...
blewett89 Posted February 7, 2014 Author Share Posted February 7, 2014 I'm not worried about how long the battery lasts as such it's more the fact i heard that u need to have a minimum amount of power to run the motor and esc Quote Link to comment Share on other sites More sharing options...
Noj Posted February 7, 2014 Share Posted February 7, 2014 I think you are referring to the C rating of a lipo? 30c minimum will be fine for that combo. I run one on 2s 25c packs with no issues at all. Getting the biggest mah pack that fits your tray is always advisable....better to have more rruntime than less, IMHO....why have the fun stop early??? Quote Link to comment Share on other sites More sharing options...
Tear101 Posted February 7, 2014 Share Posted February 7, 2014 I'm looking at upgrading to brushless for my tamiya db01 I've found a etronix 2.0 with 9.0 motor and wondered what lipo battery would be required to run as I can work out c and mah but not sure if enough to run the setup?http://www.modelsport.co.uk/etronix-photon-2.0-1-10-brushless-system-9.0r/rc-car-products/368725 I run a 10t version of this set up and i use a core rc 2s lipo(cheap and nothing fancy). Pulls my 2wd slash along just fine. Quote Link to comment Share on other sites More sharing options...
300bhp/ton Posted February 7, 2014 Share Posted February 7, 2014 I think you are referring to the C rating of a lipo? 30c minimum will be fine for that combo. I run one on 2s 25c packs with no issues at all. Getting the biggest mah pack that fits your tray is always advisable....better to have more rruntime than less, IMHO....why have the fun stop early??? That's a little misleading. As you need to know the mAH of the battery for the C discharge rating to mean much. Eg An 1800mAh @ 30C discharge is hugely inferior to a 5000mAh @ 30C. 30C means the discharge rate is 30 x whatever 1C is for the battery. An 1800 mAh has 1C of 1.8amps while a 5000mAh has a 1C of 5.0amps So 1.8 x 30 compared to 5 x 30 54amp vs 150amp. That's a massive difference despite both being rated at 30C. Quote Link to comment Share on other sites More sharing options...
300bhp/ton Posted February 7, 2014 Share Posted February 7, 2014 I'm not worried about how long the battery lasts as such it's more the fact i heard that u need to have a minimum amount of power to run the motor and escthe best advice I can offer. Is to recommend you read up and learn about LiPo's and what all the numbers mean. This way you will be informed and most likely able to answer your own question. At the very least you'll be able to understand and validate what others recommend. Quote Link to comment Share on other sites More sharing options...
oodboo Posted February 7, 2014 Share Posted February 7, 2014 Or just got for a battery somewhere around the 4-5000mah and 20-30C. It'll be fine as long as it fits. Read the lipo thread to know how to look after the batteries though. Quote Link to comment Share on other sites More sharing options...
Phil_innit Posted February 7, 2014 Share Posted February 7, 2014 Hi - first post so apologies if it should have been else where. I've bought a 2nd hand car (Axial Exo Terra) with a an ezrun wp sc8 brushless set up. It needs a battery and after read the lipo guide and working backwards from there, I just wanted to check what I'm thinking of going for is going to be ok. Based on the guide I'm looking at either an Overlander 5000mAh 3S 11.1v 25C Sport Track or 5000mAh 2S 7.4v 30C Sport track. Gonna read through the exo terra boards to double check that they'd fit? Cheers Quote Link to comment Share on other sites More sharing options...
oodboo Posted February 8, 2014 Share Posted February 8, 2014 I'd guess that 3s is going to be a bit much for the axial. No doubt you'll end up buying more than one battery so I'd start with a 2s. Quote Link to comment Share on other sites More sharing options...
Phil_innit Posted February 8, 2014 Share Posted February 8, 2014 Perfect, that's what I was thinking. Gonna click on the order button right now. Cheers Quote Link to comment Share on other sites More sharing options...
Noj Posted February 8, 2014 Share Posted February 8, 2014 Depends on the kV of the motor....some owners fitted 3s capable, most went down the 2s route owing to battery tray size. I can say that hardcase nanotechs in 2s format are a perfect fit. Quote Link to comment Share on other sites More sharing options...
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