-Remember buy the PowerPack!
-Because it can save you more than a years worth of battery’s cost, and it costs only 50 bucks and can last up to 5 years.
-AA Battery’s can cost up to $100 per year.:mad: <This was according to the Users on Vex powerpack>
-The PowerPack is not cheap at the time but it charges within 2 hours and rechargable AA battery’s takes 2 full days to get all the batterys charged.:mad:
Sure this seems like a add on Television but if you don't get a Power Pack those AA's will cost you!!!! =)
the power pack at radio shack is only 30 bucks, all for the greater good:D
For recreational use, you can get some cheap RC cars rechargeable batteries also. They work just as good and cost anywhere between $5 and $25 bucks a piece, but then you sometimes have to buy a charger.
yeah the rc car battery packs at radioshack are cheap!! but you have to find the 7.6v with 2000 mah for the robot to last
The battery pack may be convenient for many users, but there are a myriad of ways to get in the neighborhood of 7.2 V DC other than the power pack and non-rechargeable AAs. In addition, if you are looking for battery life in a “hobby” style package, you can buy 7.2V NIMH batteries (similar to the vex battery) in excess of 4000 mAH (that I have seen, higher cap batteries may well exist).
Although if you wanted to get really spiffy, you could use Carbon Aerogel Capacitors to build yourself a capacitor bank as a power supply. Each capacitor has a maximum capacitance of 60 F (yes 60 Farads not uF). The caps are about 1/2 the size of a AA. So in the space of 4 AAs you could have a power supply which has a life span of about 50 minutes (at 1 amp draw) and which charges in a couple of seconds with a properly designed charging circuit (of course in this scenario, when fully charged, the cap array would have a charge of nearly 2400 coulombs ( 60 F * 5 V * 8 Caps ) !!!, but hey . . .)
Ya, Now that i have a battery pack i can’t beleive i ever used to drive robots with out one