Pololu
This is a rechargeable 3.6 V NiMH battery pack with a capacity of 2200 mAh. The pack consists of three AA cells in a single row and a 4" lead terminated by a "JR"-style connector. ... a "6V", 5-cell pack can measure over 7 volts after being charged, and it can fall well below 5 volts when the pack is drained. You will need to charge ...