-----Original Message----- >From: James Newtons Massmind >Sent: Aug 21, 2006 9:57 PM >To: "'Microcontroller discussion list - Public.'" >Subject: [EE] eBike power was Battery (SLA) deep cycle damage > >> Everyone always wants to know why you are asking, so I will >> tell you that I'm trying to put together an electric bicycle >> and I'm wondering if I should go with more expensive deep >> cycle batteries or cheaper standard SLA's with one or two >> solar panels mounted on the bike. > >I was looking at NiMH batteries, but all the larger ones I could find were >insanely expensive. Then I was talking to buddy of mine who said the hybrids >use standard C or D cells in a big pack so I thought I should look at the >smaller sized batteries... > >http://www.thomas-distributing.com/mh-4aa200.htm $5.77 per 4 pack of 1.5 >volt (actually 1.2) 2AH NiMH batteries. They will recharge 500 to 1000 times >and can be "run-flat" without damage. To match a 36V 12AH SLA pack, I would >need 180 AA cells or 45 packs for a cost of $259.65. Compared to $80 and >100-200 recharges for the SLA, the total lifetime cost is at about 1.5 times >better. > >But how do you build a battery holder in a bike frame for 180 AA cells? > Have you calculated pounds/AH? How about a vest that would double as body armor? :-) >--- >James Newton, massmind.org Knowledge Archiver >james@massmind.org 1-619-652-0593 fax:1-208-279-8767 >http://www.massmind.org Saving what YOU know. > >-- >http://www.piclist.com PIC/SX FAQ & list archive >View/change your membership options at >http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist