OMG its a boom :3

Hm?
Not sure if I know what olyou are talking about ^^;

hack and slash 4s lipo. definitely the scariest thing i've seen all week.

tell me you have balanced the pack since assembling it?

The cells were all at the same voltage when they arrived, and after assembly. Once I get the charger, it will be charged and balanced, worry not.

And this is far from a scary thing. If you want scary, you should see my classmates robot.

well, the week is still young

Indeed it is, but I trust these batteries to not explode or whatnot.
On another note, I got my sumobot operating on this pack, but coding needs revising now that it has more jam than before. then comes servos, ping sensors, and sheet metal!

I would like to pretend that I totally comprehended all of the words in that description as well as what components are being shown in the picture. But alas I'm only viewing this image now because I was interested in the big red digital numbers ._.

This is a battery, kind of like the one that is in your cell phone. This battery has 4 cells at 3.7v each, to create a 14.8v battery. It is arranged like it is so that it fits almost perfectly in the robot I am building. I had just finished wiring it up so it worked, and I had hooked it up to a multi cell battery checker to make sure it was all A-OK after it was assembled :3

But yes, red digital numbers are always cool.

Looks good although I would cover them in liquid electrical tape once you're done. It's a liquid that forms a waterproof rubber compound when it sets. You can get it at most hardware stores and it's saved me from multiple lipo fires in the past from things landing on the packs. I wrap the cells in duct tape strips then use the liquid over it. Once it's all done the battery is almost indestructible. Just make sure you put on the liquid outside where the fumes won't give you a headache. I use it in my room but I have a filter system that takes out the fumes if I set it in front of the intake. Also for connectors, have you ever used JST connectors? I have gone through about 20 of them this year already. For heavier power systems I use XT-60 connectors since they're easy to unplug and can be difficult to short. You can get them both for pretty cheap at www.hobbyking.com if you're interested. I make orders there almost once every 3 months to keep my stock of electronics and plane parts up. Next time I'm going to need a bunch of those connectors, heat shrink, and a ton of metal gear servos. I really have been getting into new stuff with the RC and servos are becoming more common in my projects. I probably have around 15 servos on my planes and I need more. Gaah this hobby is so expensive but fun.

Considering the current draw of my robot, I don't think I'll have to change to anything special yet, right now its the regular two pin header plug that comes on most smaller batteries.

Battery hacking at its best!

Why not? :D

Sumobot?? Like in fighting bot?

Kind of, its like real sumo wrestling, just littler and with robots

I made one of these with my Lego Mindstorms NXT a long time ago. I tried to find somebody to compete with but apparently corn fields aren't very supportive of programming in terms of people who can do it.