Lipo Batteries

[ShinyRayquaza]

Is the price of this batteries ok or are they too expensive?

http://cgi.ebay.de/2x-7-4v-4000mAh-15C- ... 1|294%3A50" onclick="window.open(this.href);return false;

And do they have the security circuitry or whatever it's called? And how do i charge them?

[eurddrue]

Is the price of this batteries ok or are they too expensive?

http://cgi.ebay.de/2x-7-4v-4000mAh-15C- ... 1|294%3A50" onclick="window.open(this.href);return false;

And do they have the security circuitry or whatever it's called? And how do i charge them?

They look safe, but you need a protection circuit. You could probably buy one on batteryspace.com. And if you use a protection circuit, you wouldn't need any special type of charger, just one that outputs 7.5v with 1A or so.

[Life of Brian]

Don't packaged batteries like that usually already have a protection circuit?

[schmellyfart]

Sometimes they do sometimes they dont. These ones do not have a built in protection circuit.