Car batteries

Beware using leisure or standby lighting batteries. They are normally designed to give a low current for about 20 hours and do not like heavy current. Only traction batteries are suitable for giving heavy currents for short periods.
Golf buggy or mobility buggy batteries are ideal as well as the specialised Hawker batteries that are the roboteers favorite.

I stand corrected.

Tom

You want Optima Yellow Top batteries!

You can run them fairly flat, and they will deliver high currents for sustained periods and in excess of 700A peak without damage. I use them for winching (on Land Rover) and they out-perform almost everything. They are a good hybrid of a leisure and a high current battery. Mine are now 5 years old and showing no signs of deterioration.

5 years is a good innings for any car battery, never mind one subject to repeated abuse!

Down side - £150 each! - worth every penny though.

Si

Thanks all, great input. While not bying batteries just yet (couple of months probably), now Ill be able to size the chassis to the batteries mentioned. :)

Samuel, thanks for your offer but Im looking for 60 to 100 ah at 24v and for that I would need to many 17ahs to be practical Im afraid.

regards

The company I work for sell batteries that might work for your application Thomas, only 33Ah though

http://www.jprelec.co.uk/index.htm?http&&&www.jprelec.co.uk/docs/order_code.asp?pCode=%5F0R511T9PV&PGID=%5F0QN0SHQK S&LEVEL=1&SearchType2=6&MODE=&PARTNO=&KEYWORD=&PG= Batteries&RELATED=0&rtype=A&OC=NONE&TEMP=NONEhttp://www.jprelec.co.uk/index.htm?h...rder_code.asp? pCode=%5F0R511T9PV&PGID=%5F0QN0SHQKS&LEVEL=1&Searc hType2=6&MODE=&PARTNO=&KEYWORD =&PG=Batteries&RELATED=0&rtype=A&OC=NONE&TEMP=NO NE

i have got 4 Hawkers 12v 16 amp hour with 2 chargers in the for sale section you can have all 4 and the two chargers for £140.00 they hacve only been used a few times