ku65 an booster battery

Zebb

Esteemed Pedelecer
Jun 13, 2012
371
12
Hi

I cant remember what volt battery I can add to my ku65, 36v for a booster battery, anybody know please.
I have 3 cell lipo battery I can just try for a quick mile if thats not to big.

Plus I have lost the link to the company that was selling the batterys and lipo chargers.Any help on that one please too.

Thank you.
 

KirstinS

Esteemed Pedelecer
Apr 5, 2011
3,224
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Brighton
I use an 11.1v booster - so 48v nominal

This is right on the limits of this controller though and I was told it may go pop. I think I get away with it as I use 18650 cells and get some voltage sag hence don't quite hit the upper voltage cap

I suspect if I used 48v nominal of lipo it would go pop

You are def safe using a 7.4v booster
 

Zebb

Esteemed Pedelecer
Jun 13, 2012
371
12
Thank you really helpful. I will go with 7.4v.
 
D

Deleted member 4366

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Two cells is definitely OK. Three puts you on the limit.
 

Zebb

Esteemed Pedelecer
Jun 13, 2012
371
12
Thanks Dave didnt see that at all, also didnt realise they did them in that capacity. I will get one of those. Kind of you to point it out.
 

Zebb

Esteemed Pedelecer
Jun 13, 2012
371
12
Hi

13000mh battery turned up today, what is the safe low voltage on this please, battery meter on its way.

Thanks.
 

patpatbut

Esteemed Pedelecer
Apr 25, 2012
860
79
If you set 3.2v (each cell) it should be ok.

Pat
 

Zebb

Esteemed Pedelecer
Jun 13, 2012
371
12
Thank you
 
D

Deleted member 4366

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Once the cells reach 3.6v, they're virtually empty and will go down rapidly, so it's best to set it there
 

Zebb

Esteemed Pedelecer
Jun 13, 2012
371
12
Ok thanks, the charge rate states 2amps on the web site, but charger manual stating 1c which is way over for this battery, what would the best current charge to prolong life, stick to the 2amps or could I go a bit higher.

Thanks again