Noob and ul-1 w/ lipo

[Diesel6401]

Question, so i'm new rc 's and new to lipo's. My question is that I currently run 2x 2s zippy 4500mah 30c lipos. I want to add some more voltage to my boat. Being since the batteries run in series can I run a 2s 4500mah 30c lipo with a 3s 4500mah 30c to equal 5s? As long as the "C" and mah ratings are the same voltage really shouldn't matter since their added together anyway. Is my thinking correct or am I way off?

[6S HYDRO]

yes but dont run longer than 1 min.

[Diesel6401]

yes but dont run longer than 1 min.

Y is that? I would like more run time, how could accomplish that without changing esc?

[6S HYDRO]

no chang motor and esc to accommodate 5s, maybe a 1300-1500kv motor and at least a 150 amp esc

[Diesel6401]

no chang motor and esc to accommodate 5s, maybe a 1300-1500kv motor and at least a 150 amp esc

Sorry I meant to say without changing esc, I edited the above statment. So instead of going to 5s would more amps make a difference in perfomance, say 5000+mah at 40c or 50c? My goal is to provide best battery power without changing the stock esc/motor. I currently run 2s 4500mah 30c zippys like I said above I also have some 2s 4000mah 25c tenergys I run in my SV. I really like the perfomance of the lipo's it's amazing. I truly noticed the difference in my SV. My ul-1 is fast enough for me right now. I run a x440/3 and I love the perfomance and heat is not an issue at this time. I am just trying to gain some knowledge on best setup solutions for this boat. So far I have 0 complaints and am truly loving rc boating . Just a whole lot to learn, I've only been in for 3 months.

[6S HYDRO]

get the 40c 2s batteries, or get 2 4s 3700 batteries and run them in parallel for 4s2p

[Diesel6401]

get the 40c 2s batteries, or get 2 4s 3700 batteries and run them in parallel for 4s2p

I found some 2s 4000mah 40c's on HC I may go with. Thanks so much for all the help.

[wizard122]

Hi Diesel check out these thread https://forums.offshoreelectrics.com/...ad.php?t=12248 found it yestrday

[Diesel6401]

Hi Diesel check out these thread https://forums.offshoreelectrics.com/...ad.php?t=12248 found it yestrday

Hey what's up wizard. Sweet I'll have to give those a try and order them when I get a chance. Did your pond freeze up over the last few days? The part of lake norman that I normally run at was surprisingly frooze. Are you running those in your SV?

[Diesel6401]

Hey wizard those turnigy 5000 40c's are out of stock at HC. These are the ones you have correct? http://www.hobbycity.com/hobbycity/s...dProduct=10305

[6S HYDRO]

those are the ones- dont do a 4000 pack it wont have as many amp discharge. 5000 mah and higher for boats. the 2 3700's would be 7400 mah and 80c

[Diesel6401]

those are the ones- dont do a 4000 pack it wont have as many amp discharge. 5000 mah and higher for boats. the 2 3700's would be 7400 mah and 80c

I run 4000 25c in a SV and 4500 30c in a ul-1. You think this is too low? I run for maybe 5-7ms, the stutter bump or lvc has never tripped on either boat

[6S HYDRO]

just calc it out 25c 4000mah= 25 x 4 or 100 amps

30c 4500mah= 30 x 4.5 0r 135 amps

40c x 5000= 200 amps

you want to only use 70 percent of your amps so if your ul-1 is pulling 90 amps peak (whick most do) you would want batts that provide 30% more amps than your pulling so
ul-1 pulling 90 amps with 135 amp batts
70% of 135 is 94.5 amps so your right there, the 40c would give you 65 amps more leeway

[6S HYDRO]

hence the 40c's will prob never puff out on ya

[Diesel6401]

just calc it out 25c 4000mah= 25 x 4 or 100 amps

30c 4500mah= 30 x 4.5 0r 135 amps

40c x 5000= 200 amps

you want to only use 70 percent of your amps so if your ul-1 is pulling 90 amps peak (whick most do) you would want batts that provide 30% more amps than your pulling so
ul-1 pulling 90 amps with 135 amp batts
70% of 135 is 94.5 amps so your right there, the 40c would give you 65 amps more leeway

Cool, I will have to wait until the get back in stock. Do you happen to know what SV's peak at?

[6S HYDRO]

yeah im waiting for stock too. the sv's usually pull alot less but everything depends on how big a prop your runnin and how many kv motor

[Diesel6401]

If I did go parallel how would I go about it. Grab this adaptor from OSE http://www.offshoreelectrics.com/pro...od=dh-gpmm3142 and disconnect the series jumper from the two esc connectors and just solder the two wires from the esc to one connector? Basically get rid of the two battery connections and make one and use with this adaptor. Just weighing my options and gaining knowledge.

[6S HYDRO]

no you can flip the deans opposite and fit one pos. end in the one hloe and one neg. in the other its hard to explain - but you dont have to go to a single deans-hence you can still run series packs as well

[6S HYDRO]

ill take a pik

[Rumdog]

Be careful with the SV. It does not have a low voltage cutoff.

[6S HYDRO]

[Diesel6401]

Be careful with the SV. It does not have a low voltage cutoff.

I installed a dimension engineering lvc as well as a cc bec. My SV is just an electrical hazard lol. Gotta love it

[Diesel6401]

WHOA that looks crazy 6s, so both batts plug into the bottom i assume and where do the 2 connectors for the esc plug into? I only see one female input at the top for esc? Could I do it the way I decribed above though? Please bare with me. Funny part is that am an aircraft mechanic and rc boats make me think more than planes do...lol

[6S HYDRO]

that was just an example, you would use the one from offshore and your regular leads comin out from your esc. thats how you plug 2 deans into a single parralell port

[6S HYDRO]

just what i had layin around to show you with, i dont use deans anymore and have moved srictly to 5.5mm bullets

[6S HYDRO]

i would never run this setup- too much resistance, just shows you how to flip series deans to one single parallel plug

[Diesel6401]

That connector from ose only has 1 input for the esc though correct? So just install red wire for esc into + side of the connector and have the - left out and do the opposite for the other connector? I wish I could better explain what am trying to say. bascialy one side of each connection from the esc would be left unplugged. that way I could easily change back in forth between series and parallel? Am i close?

[bwells]

Wow. 6S: is that connector UL approved? That was a lot of work to make!

[6S HYDRO]

That connector from ose only has 1 input for the esc though correct? So just install red wire for esc into + side of the connector and have the - left out and do the opposite for the other connector? I wish I could better explain what am trying to say. bascialy one side of each connection from the esc would be left unplugged. that way I could easily change back in forth between series and parallel? Am i close?

you are correct

[6S HYDRO]

Wow. 6S: is that connector UL approved? That was a lot of work to make!

no its not UL, all im showing is a series connector and a parallel connector hooked together to show diesel- dont run this contraption shown