Lithium Polymer (LiPo) Battery FAQ

Lithium Polymer Batteries could be the preferred energy source of Lithium polymer battery manufacturer electric radio-controlled types. They’re comparatively low cost, light-weight, and hold a lot of electricity. Even so, quite a few new hobbyists may have some enquiries concerning their functions.

Below are 3 routinely questioned questions on them.

1. What is Cell Balancing?

Lithium Polymer batteries generally arrive packaged being a pack of much more than two personal battery cells. For example, electric powered RC helicopters use 3-cell packs. Each and every of these battery cells incorporates a nominal voltage of three.7v; which implies that each cell can operate when it maintains its cost involving 3.0 to 4.2v. To go over or below or down below this assortment can harm the mobile and render it worthless, or even worse, develop into dangerously unstable and explode.

While the battery is in usage, the facility drawn out of each individual cell is not equal. Thus, at the end of every flight, the cells inside the battery will be omitted of stability. A non-balancing charger will stop charging the battery pack after the voltage in the overall pack is complete with out paying out any interest to every cell. This will cause the battery for being much more plus more unbalanced with every single demand and would also result within a diminished functionality with the battery pack.

A balance charger eradicates any unbalanced-cells signs or symptoms of the battery pack by charging each individual cell individually; making sure that the cell’s voltage stay balanced at the conclusion of just about every cost. In essence, equilibrium charger lengthen the life on the battery back again and maximizes its efficiency in addition as keep the pack secure and risk-free to work.

2. Precisely what is C score?

Plenty of radio-control fliers speedily grasp the that means of many of the battery-associated acronyms but just one: the C score. In actual fact, lots of professionals have tripped in excess of them selves seeking to describe it. Even so, I’ve heard a graspable explanation of it from an aged Chinese battery manufacturer/expert really a short while ago. Which can be: The “C Rating” will be the amount which you multiply on the ability of the battery to have its discharge price.

Nonetheless puzzled? Fundamentally, a one thousand mAh battery rated at 1C will deliver a thousand mA of ability for one hour. Conversely, when the exact pack was rated at 2C, it could deliver 2000 mA of electrical power for half an hour.

3. How briskly am i able to charge a pack?

Each and every Lithium Polymer battery pack has a various optimum demand charge. It can be vital to by no means at any time demand at a score earlier mentioned the required fee! Most batteries have a very label that specifies this important details. Even so, if the highest cost amount is just not specified, consider that the majority of Lipos are created to generally be billed at a charge of 1C. Meaning a 1000 mAh pack is often billed at 1A as well as a 500mAh pack can be billed at 0.5A. After once again, by no means ever exceed the maximum charge fee lest the battery explodes!