Very slim, extremely light weight polymer lithium batteries. Each cell outputs a nominal 3.7V at 900mAh.

Very slim, extremely light weight polymer lithium batteries. Each cell outputs a nominal 3.7V at 110mAh.

Very slim, extremely light weight polymer lithium batteries. Each cell outputs a nominal 3.7V at 2000mAh.

Extremely light weight polymer lithium batteries. This pack outputs a nominal 3.7V at 6000mAh.

Polymer Lithium Ion battery charger. Very small charger uses micro USB connector. This very easy and simple new version replaces the previous product at SparkFun catalogue.

Tiny and good quality battery for rechargeable use. Very slim, extremely light weight polymer lithium batteries. Each cell outputs a nominal 3.7V at 20mAh.

The dimensions of this version are much less than 2 cm.