Laptop batteries isn't a bad idea assuming you are aware of the potential battery chemistries you'll be dealing with, specifically lithium polymer and lithium ion, both of which should be regarded as sensitive. They do not like to be shorted, have amp loads above their rated capacity, must be charged in a specific manner to their type and size, and over discharging can be quite damaging
SLA type betteries are not delicate in this regard, accidentally short the terminals and you have some sparks, perhaps melted terminals or screwdriver and maybe a burn from grabbing what ever shorted the batt and is now screaming hot but that's about it, do that to a lithium and it can cause a serious. Lithium fueled fire which most fire extinguishers are incapable of dealing with. The great plus side to the lithium chemistries is their light weight and superbly high energy density, handled properly lithiums are a great batttery, just be aware Also the A123 type lithiums (LiPFeO4) does not have the flamability issuse that the 2 above types do, while retaining high energy density. These types of batteries can be found in cordless power tools specifically dewalt lithium stuff , a truly abusive and thankless applicatioon for a battery and they work great, life in a tank should be comparitively. Benign Jason Sent via BlackBerry from T-Mobile -----Original Message----- From: Purely RC <[email protected]> Sender: [email protected] Date: Fri, 7 Oct 2011 09:39:14 To: <[email protected]> Reply-To: [email protected] Subject: Re: [TANKS] Batteries... I think that would work fine. As always its a balance between cost, weight and performance. Regards Pete http://www.purelyrc.com On Fri, Oct 7, 2011 at 2:33 AM, whitney james <[email protected]> wrote: > And despite my having been a lurker for far too long... > > Batteries. > > We've got Lead-Acid, Li-ion, NiCd, NiMH, and... probably some others. > > Lead-Acid seems to be the darling here as they're cheap and relatively > compact. > But if weight is an issue (as it is for my wheeled vehicle)... > > What's a good bet without breaking the bank? I was thinking of splicing a > couple laptop batteries (12V @ 4.8 amp hours each) together for ~9 amp hours > for my single 12v motor (they're pretty compact and light) but... Thoughts? > > Are lead acid all they're cracked up to be? And are the extra $$$ worth it > for the others? > > Ta! > > James > > -- > 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 > -- 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 -- 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
