How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

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FranBunnyFFXII   10 mW

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How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

Post by FranBunnyFFXII » May 04 2020 1:07am

BEFORE ANYONE SAYS TO GET NEW PARTS, I already have them on the way, it's just taking time to ship thanks to ongoing human malware issues.

I have a 60volt 40amp controller, and new 60/72volt LCD twist throttle on the way.

So this stuff is gonna take a while to get here. I have a 40volt 15amp LiFePO4 in the bike right now, and it works fine, it's just slow.

I got my 60v 20ah battery today, and I've got it all soldered up and ready to be put into a battery box and mounted to the frame.

I am bored, and am wondering just how long it'd take for a 60volt battery to kill a cheap 9c hub motor clone controller thats rated for 48volts 26amps.

This kid, has a basically identical kit, and is running 66.6volt LiPoly for his bike and It doesnt seem to have blown up yet. At least as far as he's posted.
https://www.youtube.com/watch?v=npBMG2yPcUU

He did an update for the bike 11 months later and it's still running.
https://www.youtube.com/watch?v=PLyI4f7sdXc
As far as I can tell he's not upgraded the electronics.

I bought this kit

https://www.amazon.com/gp/product/B075L77QLQ/
Hardtail EMoto Build
60v x 40a x 1000 Watt Oil Cooled, 20s x 20AH LiFePO4
Steel Torker Alpental 26er Frame(V4 Torque Arm+V1 Torque Arm)

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Re: How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

Post by 999zip999 » May 04 2020 1:57am

Open your controller look inside and see if you have a 75 volt caps or 63 volt caps . If 63v don't charge your battery over 62volts. Do you have a multimeter or volt meter ?

FranBunnyFFXII   10 mW

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Re: How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

Post by FranBunnyFFXII » May 04 2020 3:07am

999zip999 wrote:
May 04 2020 1:57am
Open your controller look inside and see if you have a 75 volt caps or 63 volt caps . If 63v don't charge your battery over 62volts. Do you have a multimeter or volt meter ?
Neither.
what would I be looking for in the caps to see how high they're rated for?
Hardtail EMoto Build
60v x 40a x 1000 Watt Oil Cooled, 20s x 20AH LiFePO4
Steel Torker Alpental 26er Frame(V4 Torque Arm+V1 Torque Arm)

kosio86   10 mW

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Re: How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

Post by kosio86 » May 04 2020 3:34am

Caps have several markings on them - F-capacity, V-voltage, temperature, and model number. You look for the Voltage marking.
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DogDipstick   10 kW

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Re: How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

Post by DogDipstick » May 04 2020 5:13am

It wont die. 60v should be fine for that amperage, given the abuse people have put those things through here. You should get alot of miles.
83.1v of Ironhorse XC.. :) :bolt: by Chevy :bolt: :D Broke 10 horsies :twisted: (..about 80% healed..).. :? Anybody.. what equals √3 times the line to neutral voltage? Asking for a friend.. :| (gottenymoem4115thangs?Yall?) :confused: Fabricator @ BSECo. Inc.

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dogman dan   100 GW

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Re: How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

Post by dogman dan » May 04 2020 8:03am

Your battery is 72v at full charge, so its a good bit over the 63v cap you likely have in the 48v controller.

But if it don't pop the second you plug in, it will go awhile. Me? I'd want to ride now, and I'd stick to the old battery till your controller gets here.

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Re: How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

Post by 999zip999 » May 04 2020 8:20am

The caps are marked .plus you need a multi meter just to start playing with it. You always need to check polarity and I don't mean the red and black wire I mean check the polarity of the wires a must on all Chinese goods

FranBunnyFFXII   10 mW

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Re: How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

Post by FranBunnyFFXII » May 04 2020 10:30am

dogman dan wrote:
May 04 2020 8:03am
Your battery is 72v at full charge, so its a good bit over the 63v cap you likely have in the 48v controller.

But if it don't pop the second you plug in, it will go awhile. Me? I'd want to ride now, and I'd stick to the old battery till your controller gets here.
LiFePO4 is a little bit different in its output voltage. it stays pretty close to 3.3/3.2voltage output per cell for most of the discharge cycle, which is going to be about 66volts output. It's still above the 63volts, but Life has a very flat discharge curve.
Hardtail EMoto Build
60v x 40a x 1000 Watt Oil Cooled, 20s x 20AH LiFePO4
Steel Torker Alpental 26er Frame(V4 Torque Arm+V1 Torque Arm)

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MadRhino   100 GW

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Re: How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

Post by MadRhino » May 04 2020 11:07am

The motor is not at risk because of a battery. The controller may not be ready to take the voltage, as previous answers said. It is the controller that is feeding the motor, and must be matching the battery voltage, and Amp draw.
Motors are not voltage specific. It will run faster at higher voltage, slower at lower voltage.
Make it fool-proof, and I will make a better fool.
Current bikes
Street:
Trek Session 10 mod. Variable geometry. 70mph
Dirt:
Santa Cruz V10. 50mph

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Re: How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

Post by DAND214 » May 04 2020 11:09am

FranBunnyFFXII wrote:
May 04 2020 1:07am
BEFORE ANYONE SAYS TO GET NEW PARTS, I already have them on the way, it's just taking time to ship thanks to ongoing human malware issues.

I have a 60volt 40amp controller, and new 60/72volt LCD twist throttle on the way.

So this stuff is gonna take a while to get here. I have a 40volt 15amp LiFePO4 in the bike right now, and it works fine, it's just slow.

I got my 60v 20ah battery today, and I've got it all soldered up and ready to be put into a battery box and mounted to the frame.

I am bored, and am wondering just how long it'd take for a 60volt battery to kill a cheap 9c hub motor clone controller thats rated for 48volts 26amps.

This kid, has a basically identical kit, and is running 66.6volt LiPoly for his bike and It doesnt seem to have blown up yet. At least as far as he's posted.
https://www.youtube.com/watch?v=npBMG2yPcUU

He did an update for the bike 11 months later and it's still running.
https://www.youtube.com/watch?v=PLyI4f7sdXc
As far as I can tell he's not upgraded the electronics.

I bought this kit

https://www.amazon.com/gp/product/B075L77QLQ/
Do you have a 40v battery or is it a 36v charged to 40 volt. Is the 60 volt battery 60 volt charged or is it 52 volt 16 cell pack before charged? If it's a 16 cell pack it should run all day long, as long as the caps are 63 or higher.

Dan

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Re: How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

Post by john61ct » May 04 2020 11:10am

Link to your battery please

FranBunnyFFXII   10 mW

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Re: How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

Post by FranBunnyFFXII » May 04 2020 12:52pm

MadRhino wrote:
May 04 2020 11:07am
The motor is not at risk because of a battery. The controller may not be ready to take the voltage, as previous answers said. It is the controller that is feeding the motor, and must be matching the battery voltage, and Amp draw.
Motors are not voltage specific. It will run faster at higher voltage, slower at lower voltage.
I am aware of this. That is why im asking about the Controller specifically.
Hardtail EMoto Build
60v x 40a x 1000 Watt Oil Cooled, 20s x 20AH LiFePO4
Steel Torker Alpental 26er Frame(V4 Torque Arm+V1 Torque Arm)

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MadRhino   100 GW

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Re: How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

Post by MadRhino » May 04 2020 1:13pm

Then: the controller won’t be killed by your battery. The worst that could happen is blown capacitors if they are not rated high enough voltage. Capacitors are cheap and easy to replace. I would replace them with 100v rated right away, like all my controllers have.

Motors can kill a controller, or more often, defective motors. Shorted phase, bad connectors, worn out wiring insulation... as a result of accidents, or stupid mistakes.
Make it fool-proof, and I will make a better fool.
Current bikes
Street:
Trek Session 10 mod. Variable geometry. 70mph
Dirt:
Santa Cruz V10. 50mph

FranBunnyFFXII   10 mW

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Re: How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

Post by FranBunnyFFXII » May 04 2020 1:16pm

MadRhino wrote:
May 04 2020 1:13pm
Then: the controller won’t be killed by your battery. The worst that could happen is blown capacitors if they are not rated high enough voltage. Capacitors are cheap and easy to replace. I would replace them with 100v rated right away, like all my controllers have.

Motors can kill a controller, or more often, defective motors. Shorted phase, bad connectors, worn out wiring insulation... as a result of accidents, or stupid mistakes.
Not to be rude, but did you miss the part where I said I already have parts on the way to replace this stuff? I'm not gonna replace caps in a controller when I got a new controller on the way.

I'm just wondering if the controller I have can handle this battery until the new parts get here.
Hardtail EMoto Build
60v x 40a x 1000 Watt Oil Cooled, 20s x 20AH LiFePO4
Steel Torker Alpental 26er Frame(V4 Torque Arm+V1 Torque Arm)

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MadRhino   100 GW

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Re: How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

Post by MadRhino » May 04 2020 1:23pm

If you won’t replace capacitors anyway, why bother. Just try it and you will see. :D
Make it fool-proof, and I will make a better fool.
Current bikes
Street:
Trek Session 10 mod. Variable geometry. 70mph
Dirt:
Santa Cruz V10. 50mph

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dogman dan   100 GW

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Re: How long would a Cheap ebay/amazon 48v 1000watt kit handle a 60volt LiFePO4 battery?

Post by dogman dan » May 08 2020 6:04am

You got a crystal clear answer to that question. Maybe. :D

Try it and see, if you don't mind being stationary if the thing goes pop in the first 5 min. Id rate it at least 50% it might work fine, for years even. That a definite, crystal clear,,, maybe.

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