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Unread 08-30-2014, 05:26 AM   #71
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Default Re: LiFePo4 batteries

@barber613 can you tell us more details about the batteries you chose, where you got them, how much you are into the conversion, etc? I am really keen on doing this same conversion and getting rid of the lead.

Detailing the parts you needed for the conversion and what a guy can expect to spend would be ultra helpful. Looks like a great conversion! Thanks!
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Unread 09-09-2014, 06:23 PM   #72
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I am interested too. Please update


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Unread 09-09-2014, 07:24 PM   #73
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Default Re: LiFePo4 batteries

I am also interested. This might be cheaper than a PQ motor and a new controller. Especially with the weight savings,longevity and maint.
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Unread 09-19-2014, 04:53 PM   #74
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Default Re: LiFePo4 batteries

What about Toyota Prius battery packs. I know those are way cheaper than the Nissan Leaf ones. Should be about the same performance. Any thoughts?
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Unread 09-19-2014, 07:23 PM   #75
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Default Re: LiFePo4 batteries

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Originally Posted by dcatlin7921 View Post
What about Toyota Prius battery packs. I know those are way cheaper than the Nissan Leaf ones. Should be about the same performance. Any thoughts?
So how are you going to deal with either a 288 or 400 volt battery? Great if you are building your own EV using high voltage AC motors. To get down to DC cart motor voltages will require tearing the packs apart and completely reconfigure them, and likely not able to use all of them.

What I am looking at is there are several shops today where you can buy pre-fabricated LiFeP04 packs for any voltage, capacity, to fit any space within the physical limits. Or you can get turnkey custom packs. Several out already for golf carts in 48 and 60 volts at 100 and 150 AH with BMS system you drop right in place on any electric cart. Half the size and shaves 300 to 400 pounds of weight off curb weight. The catch is the initial price. In the long run they can be less expensive but $2000 initial cost is a bit steep for a performance upgrade.
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Unread 09-19-2014, 09:37 PM   #76
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Default Re: LiFePo4 batteries

Quote:
Originally Posted by dcatlin7921 View Post
What about Toyota Prius battery packs. I know those are way cheaper than the Nissan Leaf ones. Should be about the same performance. Any thoughts?
A prius battery pack is not lithium, it is nickel metal hydride. It has almost no range at all, it doesn't need to be because a prius is a gas vehicle with electric assist. I have one.
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Unread 09-19-2014, 10:06 PM   #77
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Default Re: LiFePo4 batteries

Yup! Prius only goes a couple miles on a charge without the gas kicking in and it can only go about 35MPH on battery power. It's a hybrid. The battery is not much more than a bit capacitor. :-) Still a great concept though for efficient driving especially in city traffic.
It is not lithium. Leaf on the other hand is electric only.
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Unread 09-20-2014, 10:59 AM   #78
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Default Re: LiFePo4 batteries

So i wonder when barber is going to share his experience and answer the questions of inquiring minds as sportcoupe did?
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Unread 09-20-2014, 12:14 PM   #79
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Default Re: LiFePo4 batteries

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So i wonder when barber is going to share his experience and answer the questions of inquiring minds as sportcoupe did?
Barber doesn't come here often, at least he doesn't post much. A member since 2010 and 66 posts, I wouldn't expect a fast update.
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Unread 09-21-2014, 07:16 AM   #80
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Default Re: LiFePo4 batteries

Here's a complete Nissan Leaf battery pack after being removed and another with the cover off. There are 48 batteries in there. Each is 8.4v fully charged. I didn't need the whole battery pack but it was cost effective to buy the whole pack instead of individual batteries. I am converting my Yamaha and a neighbors ezgo.
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