First lipo pack, 5s Turnigy?

[benkels]

I saw these on HK and they look great for running my hs3540 at 72v. Any reason not to? Can't seem to find anything through the search on the forum. Apologies if it's been covered already.

http://www.hobbyking.com/hobbyking/store/uh_viewitem.asp?idproduct=9174

 

[theRealFury]

the Hobbyking Turnigy and Zippy lipo are the most widly used lipo packs for ebike applications on this forum. Im sure they will work just perfectly for your HS3540 as the zippy lipo works great for mine and the zippy are arguably a little less powerfull than the Turnigy. I take it your going to run 20S? You will get some crazy top speed out of that if you have the bike and the balls for it, i get 33-35mph out of my 12S hot of the charger with the HS3540 but i think both my bike and my balls start to get a little scetchy at that speed.

 

[dogman dan]

A lot of the earlier lipo discussion has been concentrated intot the battery FAQ's right at the top of this page.

20s , or 4 5s packs connected in series makes 72v. Make sure you understand the charging hazards etc, before you jump.

 

[benkels]

Thanks for your advice. I was just a bit nervous about them as they're only $35 each and all the 6s seem to be nearly double that and 22v each making it a battery of 66, 88 or 100v none of which utilities the limit of a 72v controller, unless you can put 88v through a 72v controller? Is it more to do with the world of rc that they're aren't more 18v batteries out there?

But yes my plan is to buy 8 and have two strings of 4 @ 18.5v 5Ah and parallel them to give me 72v @ 10Ah.
This project is starting to cost but it'll be worth it(unless my wife finds out exactly how much)

next up I'll need a charger. Thinking about that turnigy that does 4 at a time.

I'll post the build once I've got it all rolling, thanks again for the advice.

Spot the noob....

 

[Kurt]

I just purchased 6 packs of the same 5s turnigy lipo a little while ago. At $35 they are a great value and all arrived perfect. I am running 15s around 56 - 60v and they perform perfect I pull around 50A from them . even at 1p 5ah they were fine pulling 50A . I run them at 2p now 10ah. 20s 10ah pack $280 or 20s 15ah pack for $420 . That's a lot of battery for the money. and remember the lipo voltage rating is a nominal rating at 20s your going to be pumping closer to 80v most of your discharge . Like others said it will turn your bike into a ride with caution experience.

Anyhow if your after lipo the turnigy 5s packs at $35 are about the best value for money out there.

kurt

 

[Barry]

Thanks for your advice. I was just a bit nervous about them as they're only $35 each and all the 6s seem to be nearly double that and 22v each making it a battery of 66, 88 or 100v none of which utilities the limit of a 72v controller, unless you can put 88v through a 72v controller? Is it more to do with the world of rc that they're aren't more 18v batteries out there?

But yes my plan is to buy 8 and have two strings of 4 @ 18.5v 5Ah and parallel them to give me 72v @ 10Ah.
This project is starting to cost but it'll be worth it(unless my wife finds out exactly how much)

next up I'll need a charger. Thinking about that turnigy that does 4 at a time.

I'll post the build once I've got it all rolling, thanks again for the advice.

Spot the noob....

Be careful, my wife found out what I was spending on e-bikes and I had to get a part time job after nine years of retirement.

Barry

 

[Kurt]

Thanks for your advice. I was just a bit nervous about them as they're only $35 each and all the 6s seem to be nearly double that and 22v each making it a battery of 66, 88 or 100v none of which utilities the limit of a 72v controller, unless you can put 88v through a 72v controller? Is it more to do with the world of rc that they're aren't more 18v batteries out there?

But yes my plan is to buy 8 and have two strings of 4 @ 18.5v 5Ah and parallel them to give me 72v @ 10Ah.
This project is starting to cost but it'll be worth it(unless my wife finds out exactly how much)

next up I'll need a charger. Thinking about that turnigy that does 4 at a time.

I'll post the build once I've got it all rolling, thanks again for the advice.

Spot the noob....

Be careful, my wife found out what I was spending on e-bikes and I had to get a part time job after nine years of retirement.

Barry

Barry the trick is to get her into e bikes as well. Make sure its got the same wheel size and and bat voltage but of a lessor spec than yours That way when you want the new parts or battery you can tell her its for her bike. You will get the green light and then you can use them on your bike instead. If you ever get busted. You can just say Oh I am just running it in for you. Or better still give her your old part and she will think its a upgrade anyhow.

honestly If I get any complaints I just go straight to the wardrobe and point at the 10000000 sets of shoes. :wink:

Kurt

 

[dogman dan]

Read up some more before you get too deep into the lipo. You want to paralell the packs first, then series connect the pairs.

While you are reading, you'll see that the chargers that do 4 packs at a time are crap. What you want is a charger or pair of chargers that utilizes the 350w avalialbe in a meanwell power supply.

If in the USA, check out Ep buddy for chargers. You can get the other stuff you need there too, like bullet connectors and wire to make your paralell adapters.

 

[Barry]

Thanks for your advice. I was just a bit nervous about them as they're only $35 each and all the 6s seem to be nearly double that and 22v each making it a battery of 66, 88 or 100v none of which utilities the limit of a 72v controller, unless you can put 88v through a 72v controller? Is it more to do with the world of rc that they're aren't more 18v batteries out there?

But yes my plan is to buy 8 and have two strings of 4 @ 18.5v 5Ah and parallel them to give me 72v @ 10Ah.
This project is starting to cost but it'll be worth it(unless my wife finds out exactly how much)

next up I'll need a charger. Thinking about that turnigy that does 4 at a time.

I'll post the build once I've got it all rolling, thanks again for the advice.

Spot the noob....

Be careful, my wife found out what I was spending on e-bikes and I had to get a part time job after nine years of retirement.

Barry

Barry the trick is to get her into e bikes as well. Make sure its got the same wheel size and and bat voltage but of a lessor spec than yours That way when you want the new parts or battery you can tell her its for her bike. You will get the green light and then you can use them on your bike instead. If you ever get busted. You can just say Oh I am just running it in for you. Or better still give her your old part and she will think its a upgrade anyhow.

honestly If I get any complaints I just go straight to the wardrobe and point at the 10000000 sets of shoes. :wink:

Kurt

Kurt:

The money I make on my part time job and my social security check are mine. I reserve the right to spend this money as I see fit. This causes a little friction, but not to bad. I also ordered her a Nissan Leaf which will arrive in November. That should make her happy, I hope.

Barry

 

[benkels]

Read up some more before you get too deep into the lipo. You want to paralell the packs first, then series connect the pairs.

While you are reading, you'll see that the chargers that do 4 packs at a time are crap. What you want is a charger or pair of chargers that utilizes the 350w avalialbe in a meanwell power supply.

If in the USA, check out Ep buddy for chargers. You can get the other stuff you need there too, like bullet connectors and wire to make your paralell adapters.

Okay, thanks for that Dogman, I was thinking of maybe using a Mean Well S-350-24 to power an Icharger 206B to charge four of the packs at a time with something like a Paraboard. Will that work ok? I gather that charging lipo in series is a bad idea but if I use them in the bike in two strings of 4, 5s packs then that's alright isn't it? If not then what configuration would you suggest, 2 batteries connected in parallel to make a 18.5v 10Ah and then connect 4 of these in series? If so, what's the advantage? Could I charge the paralleled 10s packs without breaking them back down to 2x 5s batteries? And if so do I need to get the Icharger that does 10s?

Sorry, so many questions, so few brain cells

 

[Barry]

Read up some more before you get too deep into the lipo. You want to paralell the packs first, then series connect the pairs.

While you are reading, you'll see that the chargers that do 4 packs at a time are crap. What you want is a charger or pair of chargers that utilizes the 350w avalialbe in a meanwell power supply.

If in the USA, check out Ep buddy for chargers. You can get the other stuff you need there too, like bullet connectors and wire to make your paralell adapters.

Okay, thanks for that Dogman, I was thinking of maybe using a Mean Well S-350-24 to power an Icharger 206B to charge four of the packs at a time with something like a Paraboard. Will that work ok? I gather that charging lipo in series is a bad idea but if I use them in the bike in two strings of 4, 5s packs then that's alright isn't it? If not then what configuration would you suggest, 2 batteries connected in parallel to make a 18.5v 10Ah and then connect 4 of these in series? If so, what's the advantage? Could I charge the paralleled 10s packs without breaking them back down to 2x 5s batteries? And if so do I need to get the Icharger that does 10s?

Sorry, so many questions, so few brain cells

Take a look at icecub57's videos they were a big help to me.

Barry

 

[Philistine]

If you are going to be charging that much lipo (and you can afford it) I wouldn't go the Turnigy quatro charger, I would go the Icharger 3010B (just make sure you get a beefy enough PSU to power it) and charge your pack as either 2 x 10S packs or change into a parrallel configuration and charge as one big 10S pack. Make sure you understand charging amperage, and how long it will take. When I first built a 20S4P pack, I started charging it with a HK Quatro, and it took about 6 hours to charge it. I changed to the 3010Bs and suddenly I could charge my pack in an hour. Spend the time reading the Lipo Noob thread, because if you understand lipo before you start buying everything you will save yourself a fortune. I bought so much unnecessary or useless stuff when I started out because I didn't understand what I was doing. My Noob tips are, when ordering your packs from HK, also order a battery medic for manual balancing of packs, and if you can spring it a cellog 8 for quickly checking pack voltage, buy some 5S JST-XH extension leads for down the track if you choose to make parrallel balance wires (order two packs as they are so cheap), and think about what you want to use for connections (ie, andersons, or bullets), if bullets, buy a bunch of bullets from HK as well.

 

[dogman dan]

There's just too many ways to handle lipo to say this is the best, but I think the consensus is the quattro chargers are just too slow, and too many just broke.

I've got a review of Icecubes paralell charging, series discharging harness in the review section. I liked it a lot for 12s setup.

What I do myself was mostly determined by $$, and wanting to not bulk charge. I have one 350 watt meanwell, and two 150 watt chargers. I typically am in no hurry to recharge, so this slow setup works for me. I'll charge 4 packs at a time with it usually.