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Terrible start - battery exploded

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Elias:
John,

The reason of the buzzing sound was too low voltage. It was similar to the sound that the x-relay of a car makes if the battery voltage is too low.

The only thing that does not work after the incident is the sound signal or beep - whatever one wants to call it. I'll have a look on that later this week.

The next thing I'm gonna do is to buy proper battery or batteries. Would it be better to have one big (say 90 Ah) battery or two smaller ones (2 x 60 Ah for example)?

Karl:
ith batteries there is always the compromise to make between size and weight of the batteries versus performance obtained or lost.

I run "Moneypit" on a 70ah leisure battery and my wife gets a very good range from it. She completed the first 15mile Horsham run and only lost 2 segments on the pod display..larger leisure batteries are available,but they weigh more.

Car batteries seem to provide good ranges ,usually between 7-12 miles, and are lighter. But you would need to carry two to equal or better the range of the 70ah leisure battery, and that would weigh more.

All down to personal choice at the end of the day  ;)


If you've got serious cash to splash, Li-ion batteries are an option... :o

Elias:
I have been thinking about Li-Poly cells. The only problem in addition to price is that the nominal voltage of a Li-Poly cell is 3,7 V. Multiplied by 3 makes 11,1 V which is too low. But is 4 x 3,7= 14,8 V too much?

Karl:

--- Quote from: Elias on  16, July, 2008  - 22:59:23 ---I have been thinking about Li-Poly cells. The only problem in addition to price is that the nominal voltage of a Li-Poly cell is 3,7 V. Multiplied by 3 makes 11,1 V which is too low. But is 4 x 3,7= 14,8 V too much?



--- End quote ---

I believe 14.8v may be too high, I remember Adam Harper advising me anything over 13v wasn't good.

You could always go for the 24v option.... 8)

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