Hacking Pleo’s Battery
There’s a post on the PleoWorld forums about hacking Pleo’s battery.
The battery pack is a 7.2v pack made up of 6 2200mAh NiMH cells. NiMH’s have a nominal voltage of 1.2v each. The battery pack has three terminals - plus, minus and a thermistor to measure the temperature of the cells. One poster, “pleohacker” points out that since Pleo is running many motors and it’s electrical circuitry off the same pack, the cells need very low internal resistance in order to prevent the processors from shutting down (using a brownout circuit) when the cells voltage drops.
11/20/2008
Pleo » Hacking Pleo’s Battery