Price: $19.99

    Item #: LiPo2S1000-50C
    Availability: Out of Stock notify me

    This 2S battery is composed of two 50C cells with a capacity of 1000mAH. This pack pack is capable of deliver 50A of current (50C x 1A = 50A), which is severe overkill considering it's equipped with 2 universal JR-type discharge connector, each of which are only rated at 5A. Thus, if you connect both leads to the receiver you can actually feed 10A to the servos (5A+5A=10A).

    However, in practice, because these connectors can actually pass 7-8A each (as long as they're clean because surface oxidation can reduce this a little bit, which is why the manufacturer conservatively rates them at 5A each), then giving them a shot of spray contact cleaner during the off season will help keep them in tip-top condition and reasonably mean delivering an easy 15A if the servos require it. Finally, there is also a balance connector, which is used to keep the cells balanced whilst charging.

    This battery pack is ideal for powering the control-electronics of a high performance model airplane, helicopter, or truck because it outputs perfectly clean DC voltage. In fact, this is the chief advantage of a battery over a BEC, which delivers synthetically derive voltage derived by an averaging function.

    This is an especially important consideration with electric-powered models where the ESC has a BEC (Battery Eliminator Circuit). Why? Essentially because in comparison to the perfect DC voltage of a LiPo battery pack, the synthetic voltage created by any BEC costing less than $5000 is basically garbage! And while the servos don't especially care too much whether they get their juice from a battery or a BEC, the delicate control electronics of a receiver may care rather more - but it's your model - so you decide about this risk, not us. Learn more here

    Further to this; it's our opinion regarding all this (the total current the servos suck out of a pack with which you need to concern yourself), but more like, will the receiver reboot during a moment of enthusiastic flight? This is because of a phenomena called brownout. Especially with Spektrum, which is a very popular system - Google this if you don't believe it. Anyway, this is why we offer a gizmo popularly called a glitch buster on our website. You can even make your own because it's nothing but a capacitor plus a lead. Anyway, its purpose is to goose the voltage during the moment of greatest need (explaining why these are widely available, e.g. it's for a darned good reason).

    Glitch buster - http://www.promodeler.com/PDRSGB


    Background:

    With the advent of surface mount technology, the reliability of servos and receiver has become exponentially greater. Basically, crashes that don't involve pilot error are usually due to a battery pack or switch failure. This 7.4VDC 2-cell LiPo battery pack aims to increase reliability by reducing cell count - and by adopting proven lithium battery chemistry. The benefit of lithium chemistry is greatly increase current handling capability, which is important due to the demands imposed by digital servos.

    Traditional receiver battery packs rely on NiCd/NiMH chemistry. The packs consist of 1.2V cells and depending on whether they are in a 4-cell or 5-cell configuration, output 4.8V or 6.0V. The beauty of the lithium chemistry battery (like what's used in mobile phones, laptops, and for powering the propulsion motor of a model) is each cell outputs 3.7V. Using only 2-cells results in 7.4V, and higher voltage, due to Ohms Law, means current goes down. The practical effect of this is better performance at the servo and reduced loses due to extensions and results in fewer interconnections for greater reliability, e.g. a win-win!

    A further advantage of the lithium chemistry is a greatly increased ability to respond to the current demands. basically, this 50C pack can deliver significantly higher current. This is important is with digital servos because they may draw a lot more current than old-school analog servos. Plus, if you're an aggressive pilot, e.g. flying 3D (or are a competition driver) when the servos are moving more and deflecting further, they're drawing more current. Bottom line? A higher C-rating is a big deal.

    Finally, if you'd like some Pro Tips on LiPo battery care, read this:

    Best practices regarding the care and handling of LiPo battery packs.

    • Capacity: 1000mAH
    • Cells: 2S (two cells in series)
    • C-rating: 35C
    • Chemistry: LiPo (lithium-polymer)
    • Dimensions: 65mm x 34mm x 14mm (2-1/2" x 1-5/16" x 9/16")
    • Weight: 55g

    Best practices regarding the care and feeding of LiPo battery packs.