Search found 160 matches

by mattcarr
Fri Aug 30, 2013 12:04 pm
Forum: Electric Motor Bikes
Topic: Another EV bike :)
Replies: 135
Views: 91937

Re: Another EV bike :)

Well, I for one will be interested to see how you progress with your pack. How will you assemble it? Will you be using the cell holders and have them all wired up that way? I used to work for major electronics company in IT - and we used to have piles of defunt laptop battery packs. I used to disman...
by mattcarr
Thu Aug 29, 2013 2:59 pm
Forum: Electric Motor Bikes
Topic: Another EV bike :)
Replies: 135
Views: 91937

Re: Another EV bike :)

What chemistry are the cells that you now have ?
by mattcarr
Thu Aug 29, 2013 11:12 am
Forum: Electric Motor Bikes
Topic: Another EV bike :)
Replies: 135
Views: 91937

Re: Another EV bike :)

Hi Chris - my mistake, I did not take in to account the voltage of the lipo in my calculations. A single cell is what 3.2v nominal voltage, by 1400 mah = 4.48 watt hours ( call it 4.5 ) and you have 700 which make a total of 3.1 kwh. I stand corrected. Will be interesting to see what performance you...
by mattcarr
Thu Aug 29, 2013 9:18 am
Forum: Electric Motor Bikes
Topic: Another EV bike :)
Replies: 135
Views: 91937

Re: Another EV bike :)

Hi Chris - have you worked out your total pack size at all. I have done some quick maths from your posts and it seems that you have got a fairly small overall pack size. You lead acid pack would be 900 watt hours and your lipo pack roughly 1200 watt hours - so about a 2.1kwh pack. Now if you say you...
by mattcarr
Tue Aug 27, 2013 9:40 pm
Forum: Electric Motor Bikes
Topic: Another EV bike :)
Replies: 135
Views: 91937

Re: Another EV bike :)

Wow Chris, that looks like lots of work being done there. I am thinking of putting together a few smaller cells to make a 12 volt battery to run my camping fridge. Want to make a simple BMS to cut it off from over charge and discharge, and I would like to assist the battery with my small mobile sola...
by mattcarr
Tue Aug 06, 2013 7:01 am
Forum: Cars,Vans and other road vehicles
Topic: CT&T E Zone range low
Replies: 9
Views: 12303

Re: CT&T E Zone range low

Hi Reg,

I was just wondering how you are getting on with the car. Did you manage to reset your gauge at all? Are you getting good distance in the decent warmer weather?

Matt
by mattcarr
Wed Jul 24, 2013 2:41 pm
Forum: Hot off the press....
Topic: MECC Manchester
Replies: 31
Views: 35200

Re: MECC Manchester

Is chargemaster podpoint? I thought they are 2 separate companies.
by mattcarr
Mon Jul 15, 2013 6:22 am
Forum: Events
Topic: Southern: Sunday July 14th 11am, Whiteley M27 J9 - informal
Replies: 3
Views: 8585

Re: Southern: Sunday July 14th 11am, Whiteley M27 J9 - infor

Thanks to all for a nice few hours talking with like minded people.

Matt
by mattcarr
Mon Jul 08, 2013 6:20 am
Forum: Events
Topic: Southern: Sunday July 14th 11am, Whiteley M27 J9 - informal
Replies: 3
Views: 8585

Re: Southern: Sunday July 14th 11am, Whiteley M27 J9 - infor

I am hoping to be able to make it there.

Matt
by mattcarr
Fri Jul 05, 2013 7:24 am
Forum: Cars,Vans and other road vehicles
Topic: CT&T E Zone range low
Replies: 9
Views: 12303

Re: CT&T E Zone range low

25 miles with almost fully charged batteries - that seems much better. Also, with new batteries they do take a few cycles to bed in until you can get their full capacity out of them. As you are reading the SG on these - I take it they are wet cells. Another thing to take in to account is watering th...

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