What do you expect from batteries? This TrustFire 14500 Lithium PCB Battery 900mAh 3.7V will allow you to get incredible runtime. Protection circuits are attached to this 3.7 lithium battery to ensure that you do not overcharge or over discharge these batteries. And this 3.7 lithium battery holds a charge longer than traditional batteries. Such 900mah battery is multi-functional which is designed for all 14500 batteries appliances. This 3.7 lithium battery is very convenient to have spare rechargeable batteries on hand. With this lithium battery 3.7 v, you always have fresh batteries for your electronics. No memory effect means batteries can be recharged at any time, even when only partially drained. To save you a lot of trouble, try this 3.7 lithium battery!
Pros:I needed a small size round Lipo battery for a small camera and transmitter. This AA sized LiPo was perfect for my project, I built a DC/DC boost converter to step-up to 5V. Twin AA Alkalines were not as good as this battery, with there high internal impedance.
Other Thoughts:Small and powerful, ideal for miniature electronic projects.