Lithium Polymer Batteries is the admired ability antecedent of electric radio-controlled models. They are almost cheap, light, and authority lots of power. However, abounding new hobbyists may accept some enquiries as to their operations.

Here are three frequently asked questions about them.

1. What is Cell Balancing?

Lithium Polymer batteries usually appear packaged as a backpack of added than two alone array cells. For example, electric RC helicopters use 3-cell packs. Each of these array beef has a nominal voltage of 3.7v; which agency that anniversary corpuscle can accomplish if it maintains its allegation amid 3.0 to 4.2v. To go aloft or below or below this ambit can accident the corpuscle and cede it useless, or worse, become alarmingly ambiguous and explode.

While the array is in usage, the ability fatigued out of anniversary corpuscle is not equal. Therefore, at the end of anniversary flight, the beef in the array will be larboard out of balance. A non-balancing charger will stop charging the array backpack already the voltage of the all-embracing backpack is abounding after paying any absorption to anniversary cell. This causes the array to be added and added asymmetric with anniversary allegation and would aswell aftereffect in a beneath achievement of the array pack.

A antithesis charger eliminates any unbalanced-cells affection of a array backpack by charging anniversary corpuscle individually; authoritative abiding that the cell's voltage abide counterbalanced at the end of anniversary charge. In essence, antithesis charger amplify the activity of the array aback and maximizes its achievement as able-bodied as accumulate the backpack abiding and safe to operate.

2. What is C rating?

A lot of radio-control fliers bound butt the acceptation of a lot of of the battery-associated acronyms but one: the C rating. In fact, abounding experts accept tripped over themselves aggravating to explain it. However, I've heard a apprehensible account of it from an old Chinese array manufacturer/expert actual recently. Which is: The "C Rating" is the amount which you accumulate to the accommodation of the array to get its acquittal rate.

Still confused? Basically, a 1000 mAh array rated at 1C will accommodate 1000 mA of ability for 1 hour. On the added hand, if the aforementioned backpack was rated at 2C, it would accommodate 2000 mA of ability for 30 minutes.

3. How fast can I allegation a pack?

Each Lithium Polymer array backpack has a altered best allegation rate. It is actual important to never anytime allegation at a appraisement aloft the defined rate! Most batteries accept a characterization that specifies this basic information. However, if the best allegation amount is not specified, accumulate in apperception that a lot of Lipos are fabricated to be answerable at a amount of 1C. Which agency a 1000 mAh backpack can be answerable at 1A and a 500mAh backpack can be answerable at 0.5A. Once again, never anytime beat the best allegation amount lest the array explodes!