You will get increased life if you use lots of smaller batteries, as each battery sees less draw from the motors. A big problem in Lead acid batteries (sealed or otherwise) is a thing called "the Peukert effect" which basically means the more you draw from your battery over the advertised rate the less youll get, meaning it will not put out anywhere near what it is rated for. This will also reduce cycle life. Smaller batteries also do not need more maintenance (other then making sure they are relitivly balanced) as you should only ever use sealed batteries (ie maintenance free).
Chris. b On Mar 29, 1:15 am, Steve Tyng <[email protected]> wrote: > Go with whatever combination gives you the most amp-hours for your > chosen voltage. If going with multiple smaller batteries, I suggest > building battery packs so that the same batteries are always used and > charged together. > > Steve Tyng > > On Mar 27, 8:27 pm, [email protected] wrote: > > > > > i was looking at batteries again for the Tiger, saw a few of interest and > > then noted their sizes. this morning i went and took some 1.5" pink foam > > board and made some battery mock-ups to try out in the current tank's hull. > > > i made 3 different sizes, a set of each. > > > Battery 1 - can fit 2 > > 12 volt 18 amp > > 14 lbs > > 7-1/4" x 7" x 3-1/4" > > $26.00 > > > Battery 2 - can fit 4 to 6 > > 12 volt 12 amp > > 9 lbs. > > 6" x 4" x 3-3/4" > > $27.00 > > > Battery 3 - can fit 4 to 6 > > 12 volt 10 amp > > 6 lbs. > > 6" x 2-3/4" x 3-3/4" > > $25.00 > > > so far i am leaning towards battery 2 because if i go with 4 of them, it > > will give me 24 amp @ 36 pounds were as battery 1 will only give me 18 amps > > @ > > 28 pounds, but i pick up 8 pounds (doesn't sound like much, but once the > > batteries starts to die out, those pounds will start to count - at least > > that's my thinking), but if i go with battery 3, i will have 20 amps @ 24 > > pounds ........ battery 3 is starting to look pretty good now > > > bat 1 - 18 amps @ 28 pounds > > > bat 2 - 24 amp @ 36 pounds (4 bat) > > 36 amp @ 54 pounds (6 bat) > > > bat 3 - 20 amps @ 24 pounds (4 bat) > > 30 amps @ 36 pounds (6 bat) > > > crap, now i'l starting to lean towards battery 3 > > > any of this make any sense to anyone in here besides possibly me? > > > so, when is it too much? as far as i recall, i think on average most > > tankers use 24 volt 18 amps (or there about's) if i'm not mistaken > > > here is this fist picture is the mock-ups for the two 12 volt, 18 amp > > batteries > > > this picture shows 4 mock-up batteries > > > this picture shows how i can stuff up to 6 batteries in the hull (and yes, > > i know there are only 4 showing, but you can easily see how 6 could fit in > > there) > > > Chris, > > _Odyssey Slipways_ (http://hometown.aol.com/odysseyslipways/index.html) > > > Picture%20005.jpg > > 78KViewDownload > > > Picture%20004.jpg > > 85KViewDownload > > > Picture%20001.jpg > > 87KViewDownload- Hide quoted text - > > - Show quoted text - -- 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
