The problem with SLA is that even when not used, they will slowly loose capacity over time. Clark, the submarine battery guy, can explain the details why this happens better than I can. Mike
________________________________ From: Bill Byrnes <[email protected]> To: [email protected] Sent: Friday, October 7, 2011 7:37 AM Subject: Re: [TANKS] Re: Batteries... If I assume 24 charge cycles /year (1 warship or tank battle per month averaging 2 days each) and I get 1000 charge cycles in my SLA per Mikes estimate below, my SLAs will last about 42 years. I don't think that I'll last 42 years, so my SLAs are good for life. Bill --- On Fri, 10/7/11, Mike Mangus <[email protected]> wrote: >From: Mike Mangus <[email protected]> >Subject: Re: [TANKS] Re: Batteries... >To: "[email protected]" <[email protected]> >Date: Friday, October 7, 2011, 12:24 PM > > > Not to mention the four cells together only weigh 3 lbs. > > Cost wise, the Sealed Lead Acid(SLAs, aka AGMs) batteries are the cheapest >per amp hour. LiFEPO4 (or LiFE for short) cells are a most expensive and >light weight per amp hour. > > IMO, LiFE cells are the way to go if a person can afford the initial cost. >They have a life cycle of 2000 to 5000 charge/discharge cycles which is about >2 - 4 times greater than an SLA. So in the end, the costs even out due to >having to replace the SLAs more often than LiFEs in the long run, plus a >person would gain all the benifits LiFE cells offer such as flat voltage >discharge curves and lighter weight per amp hour. > > I made the switch to LiFE in all of my combat ships last year. It just >follows that the tank currently under construction will have LiFE cells. :) > >Mike > >________________________________ >From: Steve Tyng <[email protected]> >To: [email protected] >Sent: Friday, October 7, 2011 5:21 AM >Subject: [TANKS] Re: Batteries... > >Four Headway LifePO4 38120S cell's in series will give you a 13v 10ah pack for >$60.http://www.evassemble.com/index.php?main_page=product_info&products_id=18Steve-- > You are currently subscribed to the "R/C Tank Combat" group.To post a >message, send email to [email protected] unsubscribe, send email >to [email protected] the group at >http://groups.google.com/group/rctankcombat-- You are currently subscribed to >the "R/C Tank Combat" group.To post a message, send email to >[email protected] unsubscribe, send email to >[email protected] the group at >http://groups.google.com/group/rctankcombat -- You are currently subscribed to >the "R/C Tank Combat" group.To post a message, send email to >[email protected] unsubscribe, send email to >[email protected] the group at >http://groups.google.com/group/rctankcombat -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to [email protected] To unsubscribe, send email to [email protected] Visit the group at http://groups.google.com/group/rctankcombat
