This is the Lead Battery with 12V 9Ah of Ultracell.

Battery Lithium Charger with Battery 900 Mah, Manta.

This is the NI-CD N 3.6V 200mA Battery from Join with 2-wire and JST connectors.

Flashlight with 5 LED, Solar Panel and Battery.

Li-ion Battery TR 18650 3.7V 9900mAh Rechargeable.

These batteries are extremely thin and light. These are the batteries with the highest energy density

7.4V 6000mAh Rechargeable Lithium Ion Battery for the educational robot - mBot. The charger is included.

Don&rsquot be caught by surprise next time your board suddenly powers-down! The SparkFun LiPo Fuel Gauge connects your battery to your project and uses a sophisticated algorithm to detect relative state of charge and direct A/D measurement of battery voltage.