Hyperion LITESTORM VZ 30C/50C VX 20C/30C CX 18C/30C
Pictured on the Right is the new Hyperion LiteStorm VZ 12003S, 11.1V 30C pack. It is from the newest range of High-Output Lithium Polymer cells available at Daves Toys, in a wide variety of capacities. The middle one is VX 2000 2S 7.4V 20C pack. It is one of the most popular pack to be supported by many flyers. The Left one is also new Hyperion LiteStorm CX 2100 3S, 11.1V 18C pack. It is light and you can enjoy longer flight with it. All Hyperion packs are made in South Korea by OEM manufacturers who have the highest standards for performance ratings and quality control.
The pictured multi-connector (top right of pic) allows tapping into each cell individually to check cell voltage and re-balance when necessary, and supports the Hyperion LBA10 Cell Balance Adapter. Note that Hyperion packs may be charged via the main wires like any other lithium pack, but that the multi-connector also gives you additional diagnostic and charge safety options.
All packs come as pictured, with high-quality silicone cabling sized appropriately for expected current draw.
HP multi-connector and LBA6 are also compatible with PolyQuest and Etec
brand packs and PCM/Balancer devices, and may be compatible with some
other brands as well.
On left is factory data for the VX1200 cell, for example. At 15C (18A continuous) and 3.0V cut-off the delivered capacity is over 96%!! And 15C aging tests show that the packs are extremely robust, losing under 10% of capacity after 200 cycles, on average.
Look at the rather amazing voltage, too. Almost 3.45V per cell average throughout the discharge at 15C, and 3.4V at 20C. Revolutionary.
If you want excellent power-to-weight performance, slip an HP-LVX1200-3S pack (99g, 3.5oz) in your 400 or 480-class model, and prop it for 20~24A static (16C~20C) . All the LiteStorm VX series are rated for 20C continuous and up to 30C for 20 seconds for E3D or 30 seconds for gliders which shut off motor thereafter (up to 40C@6 seconds for LMR). They outperform and outlast many other cells on the market which are rated at 20C or higher.
Hyperion has implemented new PCB-Free, full-tab sonic welding processes in these VX cells for lowest electrical resistance and lightest pack weight. This type of construction is unique to the Hyperion packs in high-performance lithium, to our knowledge. Hyperion VX cells also have highly uniform cell matching, and this results in very steady performance.
Specifications (connectors are not included with packs)
Weights include silicone cable and multi-connector.
LiteStorm VZ Series
LiteStorm VX Series
LiteStorm CX Series
Capacity and Current:
The rated capacity for each cell type is the minimum guaranteed by manufacturers at “2C” discharge rates, by industry practice. Capacity is a measure of how much energy can be drawn from the battery before it is completely discharged. A 1200mAh cell (1.2Ah) can deliver 1.2 amps for one hour or more, for example. When connecting packs in parallel, capacity is multiplied, as in the "2P" example below - two packs wired in parallel. (see bottom of page for info on parallel harnessing).
The ability of a cell to deliver current, or amperage (A), is often expressed as a multiple of capacity (C), as shown below:
What "C" (amperage level) should I target??
First, keep in mind that all "C" are NOT created equal. What really matters is Watts ( = Current*Voltage), and the Hyperion VX deliver extremely high voltage, for more power at any "C".
Second, you should know that many cells on the market today are over-rated. That is, if you run at the true continuous max rate sugggested, not only will voltage performance be poor, but the pack won't last very long.
For the VX series, we decided instead to do a lot of testing to see what results we got based on the number of usable cycles the pack could make at various "C" rates. We found that choosing a prop at 15C to 20C static (tested on the ground with fully-charged pack) was the "sweet spot", in which you can expect over 200 cycles with marginal loss in performance. In fact, the cells deliver so near 100% capacity when new, that you can outperform many other brand-new "high rate" packs even after you've got a 100+ cycles on the VX!
Our Hyperion VX type batteries are properly rated for 20C continuous. You may even prop for higher peak current draw in models using a lot of throttle management, like E3D, when and if necessary. Does that mean "I should prop for 20C+!"? Maybe....but maybe not! To decide what rate is appropriate you should use good sense, based on the facts, to meet your performance goals and match your model type!
At true 20C continuous, you'll get a safe-margin flight time of about 2.5 minutes max. At 15C continuous, that stretches to more than 4 minutes, and the battery lifespan is longer. Assuming your model and flying style call for various power settings, propping your model such that 15~20C static is obtained on the ground means that your flights will likely average 6 to 12 minutes, or even more, as average discharge rates are lower than peak. That's where we fly most of our own models on Hyperion VX packs: set for 12C~20C static on the ground, depending on model type.
Please pay particular attention to this part:
Keep in mind, also, that many models will not balance properly if you use the lightest possible Lithium battery. Take a typical "Speed 400" direct drive model, for instance. You may be tempted to select the lighest possible pack, and run it at the pack's max continuous rating. But most S400 models were designed around 7 to 8-cell packs of 500AR NiCd cells, which weigh 140-165 grams. Result: you are running your Li-Po battery at its rated continuous limit, and you have to add lead to the nose of the model to get the balance right. Not the best solution! Instead, consider something like the LVX1500-2S pack, which has almost identical form to a 7-cell 1000mAh NiMH pack. It weighs 80 grams, and that may be enough to get your model balanced (or require a minimum amount of lead added, anyway). Now you are running the pack at 8C, for these advantages: (1) Higher delivered voltage [= POWER] (2) Nearly twice the run time, or two flights without re-charging (3) longer pack lifetime. In fact, the voltage of the VX pack will be so high at this reduced rate that it will can exceed the voltage of a 7-cell NiMH pack! If you are running a geared S400 model, or brushless, you can take this even further by going to a 3S 1500 pack, and (1) be just about guaranteed the model will balance without additional weight and (2) get up to 50% more peak power output (because you added 50% more cells!). Of course, some models, especially those specifically designed for Lithium cells, can balance with the lightest pack - so just remember to think the "balance" issue through before you choose....
Caution! Hyperion VX Series packs retain high voltage under load. That means that when switching from a lower-rated pack type to VX series, your motor will likely draw more current with the same prop. In fact, it can be as much as 40% more amperage!! That may be too much for your motor, and therefore cause over-heating and damage. Without a diagnostic tool such as the Hyperion Emeter to check current draw, you are really "flying blind", so please check that current draw!
If you are converting an existing model from NiMH batteries to VX Lithium packs, for example, you should plan on supplying nearly the same voltage with lithium cells, or more, and changing propeller, gearing, or motor type if required to attain your target "C" rate.
Target Rates: A static discharge on the ground with freshly charged VX
To get the most from your high output batteries, you’ll need to match the battery size and arrangement to your model’s power system. If you haven’t got the tools (see the Hyperion Emeter) or experience necessary to do that, then we STRONGLY urge you to seek assistance from experienced modelers.
Series and Parallel?
A pack of 3 cells in series (3S1P, or simply "3S") has 3x1= 3 cells. This pack has NO parallel connections.
If you take two 14.8V "4S1P" packs (HP-LVX2500-4S, for example) and wire them in parallel, it would be designated "4S2P", have 8 cells in the assembled pack (4S*2P=8), have 5000mAh total capacity, and be charged at the same 14.8V "4-cell" setting as before.
Manufacturers recommend that Lithium Cells be charged at "1C" rate; 0.8A for a LVX0800 pack, for example. You can charge at lower rate but it will take a little longer, or up to 1.5C rate without harm if your charger does not have the exact setting you need for 1C.
"S" affects charge VOLTAGE:
An example: A larger model may use an assembly of "10S2P" VX
Multiply the "S" value of this pack by the nominal voltage
for one cell (3.7V) to get the nominal voltage for the pack:
The Hyperion LVX Series, however, deliver high voltage and capacity even when propped for 20C static. With capacity up to 3700mAh available, we have found that almost every class of model can (and usually should) be flown WITHOUT parallel connections at all. Larger models, using motors like the Z40 Series from Hyperion, are usually at their best when drawing current from 40A to 75A. "E3D" models are on the extreme end of max power requirements, so let's use that as an example. We have a 73" YAK 54 E3D model which uses Hyperion Z5025-20 motor and 10S lithium. Max current static on the ground is 70A (~20C for the LVX3700), for about 2400W input power. We chose LVX3700-5S and wired two packs in series, so we have 10S (37V nominal) and 3700mAh capacity. Flown in an E3D routine, flight time is 5 to 6 minutes.
The same pack used in large sport planes pulling 65A peak can give aerobatic flights of 6 to 12 minutes, depending on pilot style.
The important part is that the 3700mAh pack is extremely light, so the models fly much better all around, and use less power to do the same manuver compared to carrying a higher capacity pack. Rather than loading your airplane with a lot of extra battery for the whole flight, get more flight time by keeping the plane light when it flies, and a second pack on the charger while you are flying! Same cost as a 2P pack, much better performance, and more total flight-time.
The vast majority of large models fly extremely well on "1P" packs of LVX3300 to LVX3700 cells. Motors are more efficient, in general, when using higher voltage and less current - so if you need more power add more cells rather than more capcity and current...
For very large models, of a competition event when a certain flight time is required, you may want to parallel Hyperion LVX2500, LVX3300, or LVX3700 packs. In that case....
Should I use a pre-asssembled "unit" pack or wired individual packs?
We recommend that individual packs be harnessed or wired together, in series or parallel, whenever you need to increase voltage or capacity. Compared to a single "unit" pack, harnessed packs have these advantages:
1) Easy to check, easy to balance, easy and safe to charge: Two packs harnessed in parallel - for example 2200-3S to achieve a 3S2P, 11.1V 4400mAh pack - can be disconnected at any time, so you retain the ability to check each individual cell through the multi-connectors, and to charge safely by separating the packs and using PCM Guard or Balancer devices. If you have a "hardwired" parallel pack in a single unit, you don't have the ability to clearly diagnose a single weak cell in the pack.
2) Easy to separate for use as a single pack: If you decide to retire that big model, you can instantly revert your 3S2P pack to a pair of 3S packs, for use in a smaller model.
3) Easy to re-wire. Need to convert that 3S2P pack into 6S? With a harness, it's a snap. A hardwired pack would likely be damaged in the arduous job of re-soldering the individual cells, as required in such a conversion.
4) Easy to arrange. Different models require different pack shapes to
fit and balance the model. Harnessed packs allow you to choose the optimal
arrangement - front-to-back (inline), side-by-side, or whatever you need.
Harnessing two packs together is easy. You simply choose connectors appropriate for the target amperage, and wire them up! Here's an example made for a pair of older low-rate 2200mAh 3S packs, wired in parallel.
The 2200mAh packs were expected to run a max or 22A each, so we have chosen AC-CONN-35 short 3.5mm gold bullet connectors on the pack side (right). These are rated for 40A continuous on battery, so are well within spec. When paralleled to 4400mAh (left side), max continuous current is doubled to 44A, so we are using AC-CONN-4A long 4.0mm gold bullet connectors here, which are rated for 60A+ continuous. (note: the female 4mm gold connector in the picture on left is fully insulated with transparent shrink tubing, fyi)
We have all heard how dangerous lithium polymer packs can be if charged incorrectly, and you probably know that a "balanced" pack will provide better performance, runtime, and service life. As such, we strongly recommend that Hyperion LVX packs be charged with a combination of Hyperion EOS charger and Hyperion LBA6 Lithium Balance Adapter.
The EOS 5i and 7i Chargers both require manual setting of cell count "S", and they also include Smart circuitry to check your settings. In this way the human and the machine always "double-check" charge voltage for the other. In our opinion, chargers that rely on either 100% manual or 100% automatic voltage settings are an accident waiting to happen...
The EOS LBA 10 works with almost any charger on the market, and provides
two important functions:
Hyperion VX Lithium Polymer Batteries are only approved
for RC use, and may not be used in any other application. Battery discharging,
charging, electric motors, spinning propellers, and flying models all
have the potential for serious injury to persons and damage to property.
In purchasing these products, the user agrees to accept responsibility
for all such risks, and not to hold the Hyperion cell manufacturer, distributors,
or retailers - (all including owners and employees) - responsible for
any accident, injury to persons, or damage to property.
Because the majority of Lithium Battery problems after initial use are due to over charge/discharge of the packs, if is difficult to determine cause of failure "after the fact" in most cases, and sometimes requires inspection at the manufacturer. For packs that have been used in models and which the customer believes are defective, Hyperion Australia may request that they be returned directly to a factory laboratory in Korea, and replaced from there if defects are found. In the event that the pack is found not defective, the pack may be returned to the customer at customer's expense, if desired.
The use of liyhium batteries in radio-controlled models is to be considered experimental, and there is no long-term warranty, expressed or implied, by the manufacturer, distributors, or retailers with respect to the capacity, life in cycles, storage, or discharge characteristics of lithium cells in RC use, nor any other use nor aspect.
ALL RIGHTS RESERVED, Hyperion Australia- DEC 10, 2005 - MAY NOT BE USED
IN ANY FORM WITHOUT WRITTEN PERMISSION
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